Scientific Commons: J. Geiger

Coupling of targeting ligands to polyethylenimine (PEI) has been previously used to improve transfection efficiency of PEI gene vectors. Here, we show that the beta(2)-adrenoceptor (beta(2)-AR)...

International Stellarator/Heliotron Database progress on high-beta confinement and operational boundaries (2009)

Weller, A., Watanabe, K.Y., Sakakibara, S., Dinklage, A., Funaba, H., Geiger, J., ...

Fast recovery of the magnetic vacuum configurations of the WEGA stellarator with error field effects (2009)

Sengupta, A., Geiger, J., Otte, M., Werner, A.

A geometry interface for gyrokinetic microturbulence investigations in toroidal configurations (2009)

Xanthopoulos, P., Cooper, W., Jenko, F., Turkin, Y., Runov, A., Geiger, J.

3D MHD Equilibrium Calculations for Tokamaks with the HINT2 Code (2009)

Wiegmann, C., Suzuki, Y., Geiger, J., Solano, E. R., Liang, Y., Sun, Y., ...

Sub-GAM Modes in Stellarators and Tokamaks (2009)

Kolesnichenko, Ya. I., Lutsenko, V. V., Weller, A., Thomsen, H., Yakovenko, Yu. V., Geiger, J., ...

Integrating diagnostic data analysis for W7-AS using Bayesian graphical models, Rev (2008)

J Svensson, A Dinklage, J Geiger, A Werner, R Fischer

Analysis of diagnostic data in fusion experiments is usually dealt with separately for each diagnostic, in spite of the existence of a large number of interdependencies between global physics...

Transport Modeling for W7-X on the Basis of W7-AS Experimental Results (2008)

Beidler, C. D., Geiger, J., Maaßberg, H., Marushchenko, N. B., Turkin, Yu.

Status of the International Stellarator/Heliotron Profile Database (2008)

Dinklage, A., Ascasibar, E., Beidler, C. D., Brakel, R., Burhenn, R., Castejon, F., ...

Extensions of the International Stellarator Database by High-b Data from W7-AS and LHD (2008)

Weller, A., Watanabe, K. Y., Sakakibara, S., Dinklage, A., Funaba, H., Geiger, J., ...

Stability analysis of Wendelstein 7-X configurations with increased mirror ratio (2008)

Geiger, J.

Major results from the stellarator Wendelstein 7-AS (Review Article) (2008)

Hirsch, M., Baldzuhn, J., Beidler, C., Brakel, R., Burhenn, R., Dinklage, A., ...

Unified software repositories for Wendelstein 7-X: Workflow elements for fusion software development (2008)

Kus, A., Krüger, A., Dinklage, A., Bluhm, T., Hanke, C. G., Kühner, G., ...

Applications of HINT2 code to stellarator/helitron (2008)

Suzuki, Y., Nakajima, N., Geiger, J., Yamamoto, S., Watanabe, K. Y., Sakakibara, S., ...

On low frequency Alvén instabilities in stellarators (2008)

Kolesnichenko, Ya.I., Lutsenko, V.V., Weller, A., Werner, A., Yakovenko, Yu.V., Geiger, J.

Comparison of fast tomographic methods for application on the Soft X-Ray Tomography System on Wendelstein 7-X stellarator (2008)

Carvalho, P. J., Thomsen, H., Gori, S., Von Toussaint, U., Geiger, J., Weller, A., ...

50 W passively cooled, fiber coupled diode laser at 976 nm for pumping fiber lasers using 100 µm fiber bundles (2008)

Wesseling, C., Hengesbach, S., Geiger, J., Dolkemeyer, J., Traub, M., Hoffmann, D.

W7-X magnetic diagnostics: Rogowski coil performance for very long pulses (2008)

Werner, A., Endler, M., Geiger, J., König, R.

Investigation of Wendelstein 7-X Configurations with Increased Toroidal Mirror (2008)

Geiger, J., Maassberg, H., Beidler, C. D.

Single-mode, highly polarized Yb-doped fiber laser with 850 W output power (2008)

Geiger, J., Fitzau, O., Zintzen, B., Hoffmann, D.

Status of the International Stellarator/Heliotron Profile Database (2008)

Kus, A., Pretty, D., Ascasibar, E., Beidler, C. D., Blackwell, B. D., Brakel, R., ...

Fast recovery of vacuum configuration ofWEGA stellarator with error field effects (2008)

Sengupta, A., Werner, A., Otte, M., Geiger, J.

Verfahren und Vorrichtung zur Ankopplung eines Lichtwellenleiters an eine Licht ermittierende oder Licht fuehrende Komponente (2008)

Zintzen, B., Geiger, J., Baatzsch, A.

DE 102008027314 A1 UPAB: 20090725 NOVELTY - The method involves positioning an outlet face of a light emitting or light conducting component and an inlet face of a fiber-optic cable relative to each...

Major Results from Wendelstein 7-AS Stellarator (2007)

F. Wagner, R. Burhenn, F. Gadelmeier, J. Geiger, M. Hirsch, H. P. Laqua, ...

island divertor operation and the modelling of the results with the EMC3/EIRENE code- confinement issues with emphasis on the differences to tokamaks (isotope effect, density scaling, lack of profile...

INSTITUTE OF PHYSICS PUBLISHING PLASMA PHYSICS AND CONTROLLED FUSION Plasma Phys. Control. Fusion 45 (2003) A285–A308 PII: S0741-3335(03)67725-0 Experiments close to the beta-limit in W7-AS (2007)

A Weller, J Geiger, A Werner, M C Zarnstorff, E Sall, J Baldzuhn, ...

A major objective of the experimental program in the last phase of the W7-AS stellarator was to explore and demonstrate the high-β performance of advanced stellarators. MHD-quiescent discharges at...

An Integrated Data Analysis Model for the W7-AS Stellarator (2007)

Svensson Dinklage Geiger, J. Svensson, A. Dinklage, J. Geiger, R. Fischer

This paper describes the first implementation of a new diagnostic analysis model in which a number of previously separate diagnostic models are integrated into a single comprehensive model. The...

Assessment of Global Stellarator Confinement: Status of the International Stellarator Confinement Scaling Data Base (2007)

Dinklage, A., Ascasibar, E., Beidler, C. D., Geiger, J., Harris, J. H., Kus, A., ...

Transport simulations for W7-X (2007)

Turkin, Y., Beidler, C. D., Dinklage, A., Geiger, J., Maassberg, H., Marushchenko, N. B., ...

Statistical Analysis of the equilibrium configurations of W7-X stellarator (2007)

Sengupta, A., Geiger, J., Mc Carthy, P. J.

Localized Breaking of Flux Surfaces and the Equilibrium β Limit in the W7AS Stellarator (2007)

Reiman, A., Zarnstorff, M.C., Monticello, D., Krommes, J., Weller, A., Geiger, J., ...

Pressure-induced, breaking of equilibrium flux surfaces in the W7AS stellarator (2007)

Reiman, A. A., Zarnstorff, M. C., Monticello, D., Weller, A., Geiger, J.

Conventional and non-conventional global Alfven eigenmodes in stellarators (2007)

Kolesnichenko, Ya. I., Lutsenko, V. V., Weller, A., Werner, A., Yakovenko, Yu. V., Geiger, J., ...

Heat transport in solid and air-clad fibers for high-power fiber lasers (2007)

Zintzen, B., Langer, T., Geiger, J., Hoffmann, D., Loosen, P.

An analytical approach for the thermal design for high-power fiber lasers and fiber components is presented. The approach is based on defining a thermal resistance for each fiber layer. Thus the...

Effective cooling for high-power fiber lasers (2007)

Zintzen, B., Emmerich, A., Geiger, J., Hoffmann, D., Loosen, P.

Characterization of high power multimode combiners (2007)

Geiger, J., Erben, B., Hoffmann, S., Altmeyer, S.

Calculations of on effective ripple for a stellarator magnetic field computed by the HINT2 code (2007)

Nemov, V. V., Kasilov, S. V., Kernbichler, W., Seiwald, B., Suzuki, Y., Geiger, J.

Multi-Harmonic Modes in W7-AS High-Beta Configurations (2007)

Weller, A., Werner, A., Geiger, J., Nührenberg, C., Thomsen, H.

Assessment of global stellarator confinement. Status of the International Stellarator Confinement Database (2007)

Dinklage, A, Ascasibar, E, Beidler, CD, Brakel, R, Geiger, J, Harris, JH, ...

Effects of the Radial Electric Field on the Confinement of Trapped Fast Ions in Wendelstein 7-X and Helias Reactor (2006)

Kolesnichenko, Ya.I., Lutsenko, V., Tykhyy, A.V., Weller, A., Werner, A., Wobig, H., ...

A magnetic configuration database for Wendelstein 7-X and its application programming interface (2006)

Dinklage, A., Geiger, J., Kuehner, G., Schmidt, M., Turkin, Yu.A., Werner, A.

Effects of fast-ion-orbit width on Alfvén instabilities in stellarators: a general theory and its application to a W7-AS experiment (2006)

Kolesnichenko, Ya. I., Lutsenko, V. V., Weller, A., Werner, A., Wobig, H., Yakovenko, Yu. V., ...

Significance of MHD Effects in Stellarator Confinement (2006)

Weller, A., Sakakibara, S., Watanabe, K.Y., Toi, K., Geiger, J., Zarnstorff, M.C., ...

Venus+δf - A Bootstrap Current Calculation Module for 3D Configurations (2006)

Isaev, M.Yu., Brunner, S., Cooper, W.A., Bergmann, A., Beidler, C.D., Geiger, J., ...

Statistical analysis of the equilibrium configurations of the W7-X stellarator using Function Parametrization (2006)

Sengupta, A., Geiger, J., Mc Carthy, P.J.

Significance of MHD Effects in Stellarator Confinement (2006)

Weller, A., Sakakibara, S., Watanabe, K.Y., Toi, K., Geiger, J., Zarnstorff, M.C., ...

Assessment of Global Stellarator Confinement: Status of the International Stellarator Confinement Scaling Data Base (2006)

Dinklage, A., Ascasibar, E., Beidler, C.D., Brakel, R., Geiger, J., Harris, J.H., ...

Current Control by ECCD for W7-X (2006)

Turkin, Y., Maaßberg, H., Beidler, C.D., Geiger, J., Marushchenko, N. B.

Venus+δf - A Bootstrap Current Calculation Module for 3D Configurations (2006)

Isaev, M.Y., Brunner, S., Cooper, W.A., Tran, T.M., Bergmann, A., Beidler, C.D., ...

Optimization of ECE Diagnostics for the W7-X Stellarator (2006)

Turkin, Yu., Maassberg, H., Beidler, C. D., Geiger, J., Marushchenko, N. B.

Localized Breaking of Flux Surfaces and the Equilibrium β Limit in the W7AS Stellarator (2006)

Reiman, A., Zarnstorff, M.C., Monticello, D., Krommes, J., Weller, A., Geiger, J., ...

Poloidal trapping of high-frequency Alfvén eigenmodes in stellarators (2006)

Yakovenko, Yu.V., Kolesnichenko, Ya.I., Fesenyuk, O.P., Weller, A., Zegenhagen, S., Werner, A., ...

Equilibrium Calculations of HDH- and High-Beta Discharges in W7-AS Using the HINT2-Code (2006)

Geiger, J., Suzuki, Y.

Equilibrium reconstruction on W7-X stellarator using Function Parametrization (2006)

Sengupta, A., Geiger, J., McCarthy, P. J.

MHD Equilibrium Calculations of Wendelstein 7-X (2006)

Suzuki, Y., Geiger, J., Drevlak, M., Nührenberg, J.

Transport Simulations for W7-X (2006)

Turkin, Y., Beidler, C.D., Dinklage, A., Geiger, J., Maaßberg, H., Marushchenko, N.B., ...

Experimental observations and theoretical interpretation of anti-ballooning high-frequency Alfvenic activity in Wendelstein 7-AS (2006)

Zegenhagen, S., Yakovenko, Y.V., Kolesnichenko, Y.I., Werner, A., Geiger, J., Weller, A., ...

Venus plus delta f: A bootstrap current calculation module for 3-D configurations (2006)

Isaev, M. Y., Brunner, S., Cooper, W. A., Tran, T. M., Bergmann, A., Beidler, C. D., ...

A new three-dimensional code, VENUS+delta f, for neoclassical transport calculations in nonaxisymmetric toroidal systems is presented. Numerical drift orbits from the original VENUS code and the...

Criticality for branching processes in random environment (2005)

Afanasyev, V. I., Geiger, J., Kersting, G., Vatutin, V. A.

We study branching processes in an i.i.d. random environment, where the associated random walk is of the oscillating type. This class of processes generalizes the classical notion of criticality. The...

Criticality for branching processes in random environment (2005)

Afanasyev, V. I., Geiger, J., Kersting, G., Vatutin, V. A.

We study branching processes in an i.i.d. random environment, where the associated random walk is of the oscillating type. This class of processes generalizes the classical notion of criticality. The...

W7-AS: One step of the Wendelstein stellarator line (2005)

Wagner,F., Baeumel,S., Baldzuhn,J., Basse,N., Brakel,R., Burhenn,R., ...

Sightline optimization of the multichannel laser interferometer for W7-X (2005)

Airila,M. I., Dumbrajs,O., Hirsch,M., Geiger,J., Neuner,U.

Novel Mechanism of Anomalous Electron Heat Conductivity and Thermal Crashes during Alfvénic Activity in the Wendelstein 7-AS Stellarator (2005)

Kolesnichenko,Ya. I., Yakovenko,Yu. V., Weller,A., Werner,A., Geiger,J., Lutsenko,V. V., ...

Analysis and interpretation of observations of Alfvenic activity in Wendelstein 7-AS (2005)

Kolesnichenko,Ya.I., Lutsenko,V.v., Weller,A., Werner,A., Yakovenko,Yu.V., Geiger,J., ...

Weller,A., Zarnstorff,M.C., Hudson,S.R., Geiger,J., Werner,A., ...

Electron cyclotron current drive in the Wendelstein 7-AS stellarator (2005)

Maassberg,H., Rome,M., Erckmann,V., Geiger,J., Laqua,H.P., Marushchenko,N.B., ...

Equilibrium and Stability of High-Beta Plasmas in Wendelstein 7-AS (2005)

Zarnstorff,M. C., Weller,A., Geiger,J., Fredrickson,E., Hudson,S., Knauer,J. P., ...

Confinement Relevant Alfvén Instabilities in Wendelstein 7-AS (2005)

Yakovenko,Y. V., Kolesnichenko,Y. I., Lutsenko,V. V., Weller,A., Werner,A., Zegenhagen,S., ...

Statistical Analysis of the equilibrium configurations of W7-X stellarator using Function Parametrization (2005)

Sengupta,A., Geiger,J., McCarthy,P. J.

W7-AS: One step of the Wendelstein stellarator line (2005)

Wagner, F., Baeumel, S., Baldzuhn, J., Basse, N., Brakel, R., Burhenn, R., ...

Sightline optimization of the multichannel laser interferometer for W7-X (2005)

Airila, M. I., Dumbrajs, O., Hirsch, M., Geiger, J., Neuner, U.

Novel Mechanism of Anomalous Electron Heat Conductivity and Thermal Crashes during Alfvénic Activity in the Wendelstein 7-AS Stellarator (2005)

Kolesnichenko, Ya. I., Yakovenko, Yu. V., Weller, A., Werner, A., Geiger, J., Lutsenko, V. V., ...

Analysis and interpretation of observations of Alfvenic activity in Wendelstein 7-AS (2005)

Kolesnichenko, Ya.I., Lutsenko, V.v., Weller, A., Werner, A., Yakovenko, Yu.V., Geiger, J., ...

Weller, A., Zarnstorff, M.C., Hudson, S.R., Geiger, J., Werner, A., ...

Electron cyclotron current drive in the Wendelstein 7-AS stellarator (2005)

Maassberg, H., Rome, M., Erckmann, V., Geiger, J., Laqua, H.P., Marushchenko, N.B., ...

Equilibrium and Stability of High-Beta Plasmas in Wendelstein 7-AS (2005)

Zarnstorff, M. C., Weller, A., Geiger, J., Fredrickson, E., Hudson, S., Knauer, J. P., ...

Confinement Relevant Alfvén Instabilities in Wendelstein 7-AS (2005)

Yakovenko, Y. V., Kolesnichenko, Y. I., Lutsenko, V. V., Weller, A., Werner, A., Zegenhagen, S., ...

Statistical Analysis of the equilibrium configurations of W7-X stellarator using Function Parametrization (2005)

Sengupta, A., Geiger, J., McCarthy, P. J.

Studies of complex reactions using modem hyphenated methods: alpha-Pinene ozonolysis as a model reaction (2005)

Schrader, W., Geiger, J., Godejohann, M.

Integrating diagnostic DATA analyses for W7-AS using Bayesian graphical models (2004)

Svensson,J., Dinklage,A., Geiger,J., Fischer,R., Werner,A.

Fast recovery of vacuum magnetic configuration of W7-X stellarator using function parametrization and artifical neural networks (2004)

Sengupta,A., McCarthy,P. J., Geiger,J., Werner,A.

Equilibrium calculations for the W7-AS stellarator with large internal current densities due to ECCD (2004)

Geiger,J., Maassberg,H., Marushchenko,N. B., Romé,M., Weller,A.

Analysis of ECCD scenarios for the W7-X Stellarator by high-field-side ECE measurements (2004)

Marushchenko,N. B., Maaßberg,H., Geiger,J., Hartfuß,H., Turkin,Yu. A.

Development of Function Parametrization on W7-X stellarator (2004)

Sengupta,A., McCarthy,P. J., Geiger,J., Werner,A.

Predictive transport modeling for the W7-X (2004)

Turkin,Yu., Maaßberg,H., Beidler,C. D., Geiger,J., Marushchenko,N. B.

Effect of the Radial Electric Field on the Confinement of NBI Ions in Wendelstein 7-X (2004)

Kolesnichenko,Ya. I., Lutsenko,V. V., Werner,A., Wobig,H., Geiger,J., Burdo,O. S.

Integrating diagnostic data analysis for W7-AS using bayesian graphical models (2004)

Svensson,J., Dinklage,A., Geiger,J., Werner,A., Fischer,R.

Integrating diagnostic data analysis for W7-AS using Bayesian graphical models (2004)

Svensson,J., Dinklage,A., Geiger,J., Werner,A., Fischer,R.

Integrating diagnostic DATA analyses for W7-AS using Bayesian graphical models (2004)

Svensson, J., Dinklage, A., Geiger, J., Fischer, R., Werner, A.

Fast recovery of vacuum magnetic configuration of W7-X stellarator using function parametrization and artifical neural networks (2004)

Sengupta, A., McCarthy, P. J., Geiger, J., Werner, A.

Equilibrium calculations for the W7-AS stellarator with large internal current densities due to ECCD (2004)

Geiger, J., Maassberg, H., Marushchenko, N. B., Romé, M., Weller, A.

Analysis of ECCD scenarios for the W7-X Stellarator by high-field-side ECE measurements (2004)

Marushchenko, N.B., Maaßberg, H., Geiger, J., Hartfuß, H., Turkin, Yu.A.

Development of Function Parametrization on W7-X stellarator (2004)

Sengupta, A., McCarthy, P. J., Geiger, J., Werner, A.

Predictive transport modeling for the W7-X (2004)

Turkin, Yu., Maaßberg, H., Beidler, C. D., Geiger, J., Marushchenko, N. B.

Effect of the Radial Electric Field on the Confinement of NBI Ions in Wendelstein 7-X (2004)

Kolesnichenko, Ya. I., Lutsenko, V. V., Werner, A., Wobig, H., Geiger, J., Burdo, O. S.

Integrating diagnostic data analysis for W7-AS using bayesian graphical models (2004)

Svensson, J., Dinklage, A., Geiger, J., Werner, A., Fischer, R.

Integrating diagnostic data analysis for W7-AS using Bayesian graphical models (2004)

Svensson, J., Dinklage, A., Geiger, J., Werner, A., Fischer, R.

Analysis of ECRH and ECCD Scenarios for the W7-X Stellarator by high-field-side ECE measurements (2004)

Marushchenko, N.B., Maaßberg, H., Geiger, J., Hartfuß, H., Turkin, Yu.A.

Integrating diagnostic data analysis for W7-AS using Bayesian graphical models (2004)

Svensson, J., Dinklage, A., Geiger, J., Werner, A., Fischer, R.

High Performance Land Surface Modeling with a Beowulf Cluster (2004)

Y. Tian, S. V. Kumar, J. Geiger, P. R. Houser, J. L. Eastman, ...

1 We designed the Land Information System (LIS) to perform global land surface simulations at a resolution of 1-km or finer in real-time. Such an unprecedented scale and intensity in computing pose...

Investigation of the beta-limit in the W7-AS stellarator (2003)

Weller,A., Geiger,J., Zarnstorff,M., Sallander,E., Klose,S., Werner,A., ...

Investigations of the performance and stability of high-beta plasmas have been restarted in W7-AS utilizing higher heating powers and the new divertor system. The combination of beneficial effects...

Major results from Wendelstein 7-AS stellarator (2003)

Wagner,F., Burhenn,R., Gadelmeier,F., Geiger,J., Hirsch,M., Laqua,H. P., ...

W7-AS operates with an island divertor, which utilises the natural edge islands of the low-shear stellarator configuration to divert the plasma. High densities (up to 4×1020m-3) and partly detached...

From Off-line to Real-time Analysis: Accelerating Bayesian Analysis Codes (2003)

Dinklage,A., Fischer,R., Geiger,J., Kühner,G., Maassberg,H., Svensson,J., ...

An Integrated Data Analysis Model for the W7-AS Stellarator (2003)

Svensson,J., Dinklage,A., Geiger,J., Fischer,R.

Experiments close to the beta-limit in W7-AS (2003)

Weller,A., Geiger,J., Werner,A., Zarnstorff,M. C., Nührenberg,C., Sallander,E., ...

A major objective of the experimental program in the last phase of the W7-AS stellarator was to explore and demonstrate the high-β performance of advanced stellarators. MHD-quiescent discharges at...

Analysis of high-β equilibria with toroidal net-current densities for W7-AS (2003)

Geiger,J., Marushchenko,N. B., Maassberg,H., Dinklage,A., Werner,A., ...

Fast recovery of vacuum magnetic configuration of W7-X stellarator using Function Parametrization and Neural Nets (2003)

Sengupta,A., McCarthy,P. J., Geiger,J., Werner,A.

Major results from Wendelstein 7-AS stellarator (2003)

Wagner,F., Burhenn,R., Gadelmeier,F., Geiger,J., Hirsch,M., Laqua,H. P., ...

Investigation of the beta-limit in the W7-AS stellarator (2003)

Weller, A., Geiger, J., Zarnstorff, M., Sallander, E., Klose, S., Werner, A., ...

Investigations of the performance and stability of high-beta plasmas have been restarted in W7-AS utilizing higher heating powers and the new divertor system. The combination of beneficial effects...

Major results from Wendelstein 7-AS stellarator (2003)

Wagner, F., Burhenn, R., Gadelmeier, F., Geiger, J., Hirsch, M., Laqua, H. P., ...

W7-AS operates with an island divertor, which utilises the natural edge islands of the low-shear stellarator configuration to divert the plasma. High densities (up to 4×1020m-3) and partly detached...

From Off-line to Real-time Analysis: Accelerating Bayesian Analysis Codes (2003)

Dinklage, A., Fischer, R., Geiger, J., Kühner, G., Maassberg, H., Svensson, J., ...

An Integrated Data Analysis Model for the W7-AS Stellarator (2003)

Svensson, J., Dinklage, A., Geiger, J., Fischer, R.

Experiments close to the beta-limit in W7-AS (2003)

Weller, A., Geiger, J., Werner, A., Zarnstorff, M. C., Nührenberg, C., Sallander, E., ...

A major objective of the experimental program in the last phase of the W7-AS stellarator was to explore and demonstrate the high-β performance of advanced stellarators. MHD-quiescent discharges at...

Analysis of high-β equilibria with toroidal net-current densities for W7-AS (2003)

Geiger, J., Marushchenko, N. B., Maassberg, H., Dinklage, A., Werner, A., ...

Fast recovery of vacuum magnetic configuration of W7-X stellarator using Function Parametrization and Neural Nets (2003)

Sengupta, A., McCarthy, P.J., Geiger, J., Werner, A.

From Off-line to Real-time Analysis: Accelerating Bayesian Analysis Codes (2003)

A. Dinklage, R. Fischer, J. Geiger, S. Kühner, H. Maaßberg, H. Svensson, ...

Capabilities of real time performance of a Bayesian analysis codes are explored.

A new quasi-stationary, very high density plasma regime on the W7-AS stellarator (2002)

Jaenicke,R., Bäumel,S., Baldzuhn,J., Brakel,R., Burhenn,R., Ehmler,H., ...

Stellarators have the intrinsic property of steady state operation. However, on present-day stellarators the pulse length is usually not only limited due to technical reasons, but also by physical...

1-D predictive and analysis transport model for particle and energy transport in stellarators (2002)

Igitkhanov,Y., Turkin,Y., Wobig,H., Andreeva,T., Beidler,C. D., Castejon,F., ...

Overview on recent W7-AS results (2002)

Jaenicke,R., Bäumel,S., Baldzuhn,J., Brakel,R., Burhenn,R., Ehmler,H., ...

Performance and stability of high-β discharges in W7-AS (2002)

Weller,A., Geiger,J., Werner,A., Klose,S., Baldzuhn,J., Brakel,R., ...

Asymmetries of impurities Radiation in the W7-AS observed with soft-X-Ray tomography (2002)

Klose,S., Weller,A., Geiger,J., Werner,A.

Vessel Traffic Data, Long Island Sound. (2002)

Buhler,L., Geiger,J., Nightengale,T., Walcott,P.

This report presents data concerning vessel traffic in the Long Island Sound area. The data was obtained from films of a radar PPI at two sites in Long Island Sound. Also, tapes of communications...

Vessel Traffic Data Extraction Methodology. (2002)

Buhler,L., Geiger,J.

This report presents a description of the methods used to extract vessel traffic data during a 20-month project encompassing seven U.S. port areas. The data was obtained from films of radar PPI's and...

Vessel Traffic Data for New York Harbor. (2002)

Buhler,L., Geiger,J., Nightengale,T., Walcott,P.

This report presents data concerning vessel traffic in the New York Harbor Area. The data was obtained from films of a radar PPI at one site in the New York Harbor Area. Also, tapes of communications...

A new quasi-stationary, very high density plasma regime on the W7-AS stellarator (2002)

Jaenicke, R., Bäumel, S., Baldzuhn, J., Brakel, R., Burhenn, R., Ehmler, H., ...

Stellarators have the intrinsic property of steady state operation. However, on present-day stellarators the pulse length is usually not only limited due to technical reasons, but also by physical...

HINT equilibrium calculations for W7-AS (2002)

Geiger, J.

1-D predictive and analysis transport model for particle and energy transport in stellarators (2002)

Igitkhanov, Y., Turkin, Y., Wobig, H., Andreeva, T., Beidler, C. D., Castejon, F., ...

Overview on recent W7-AS results (2002)

Jaenicke, R., Bäumel, S., Baldzuhn, J., Brakel, R., Burhenn, R., Ehmler, H., ...

Performance and stability of high-β discharges in W7-AS (2002)

Weller, A., Geiger, J., Werner, A., Klose, S., Baldzuhn, J., Brakel, R., ...

Asymmetries of impurities Radiation in the W7-AS observed with soft-X-Ray tomography (2002)

Klose, S., Weller, A., Geiger, J., Werner, A.

Einfluss von Zündung und Zylinderinnenströmung (2002)

Pischinger, S., Geiger, J., Neff, W., Böwing, R., Thiemann, J.

Magerbetrieb und Abgasrückführung verbessern beim Ottomotor mit äußerer Gemischbildung den Wirkungsgrad im Teillastbetrieb. Die Höhe der Gemischverdünnung und damit das Potenzial zur...

Aprotische Elektrolytmischung (2002)

Rempel, R., Boehme, U., Geiger, J., Roewer, G., Rosswag, H.

DE 10035280 A UPAB: 20020411 NOVELTY - Aprotic electrolyte mixture contains an electron pair acceptor for producing an electron donator-acceptor complex, a metal source, and an aprotic solvent. USE -...

Survey of Magnetohydrodynamic Instabilities in the Advanced Stellarator Wendelstein 7-AS (2001)

Weller,A., Anton,M., Geiger,J., Hirsch,M., Jaenicke,R., Werner,A., ...

Shafranov shift in the "electron root" feature at the W7-AS stellarator (2001)

Fuchs,C., Geiger,J., Maaßberg,H.

Electron cyclotron resonance heating and EC-current drive experiments at W7-AS, status at W7-X (2001)

Erckmann,V., Laqua,H. P., Maaßberg,H., Geiger,J., Dammertz,G., Kasparek,W., ...

Survey of Magnetohydrodynamic Instabilities in the Advanced Stellarator Wendelstein 7-AS (2001)

Weller, A., Anton, M., Geiger, J., Hirsch, M., Jaenicke, R., Werner, A., ...

Shafranov shift in the "electron root" feature at the W7-AS stellarator (2001)

Fuchs, C., Geiger, J., Maaßberg, H.

Electron cyclotron resonance heating and EC-current drive experiments at W7-AS, status at W7-X (2001)

Erckmann, V., Laqua, H. P., Maaßberg, H., Geiger, J., Dammertz, G., Kasparek, W., ...

Spectra of Highly Ionized Xenon (6-30 nm) Excited in W7-AS Plasmas (2001)

Hacker, H.H., Burhenn, R., Kondo, K., Anton, M., Assmus, D., Baeumel, S., ...

Effects of Toroidal Currents upon Magnetic Configurations and Stability in Wendelstein 7-AS (2001)

Weller, A., Anton, M., Brakel, R., Geiger, J., Hirsch, M., Jaenicke, R., ...

Operational Boundaries on the Stellarator W7-AS at the Beginning of the Divertor Experiments (2001)

Jaenicke, R., Anton, M., Baldzuhn, J., Bäumel, S., Brakel, R., Burhenn, R., ...

High Power ECCD Experiments at W7-AS (2001)

Maassberg, H., Geiger, J., Laqua, H., Marushenko, N.B., Rome, M., Wendland, C., ...

Electron cyclotron resonance heating and EC-current driveexperiments at W7-AS, status at W7-X. (2001)

Erckmann, V., Laqua, H.P., Maassberg, H., Geiger, J., Dammertz, G., Kasparek, W., ...

Imai, T. [Hrsg.]

Untersuchung eines Plasmazündsystems für DI-Ottomotoren (2000)

Neff, W., Böwing, R., Wolters, P., Geiger, J.

To improve combustion stability of DISI-engines a plasma ignition system was developed and investigated. Due to its special set-up the plasma ignition system allows extremely short discharges with...

Pressure Profile Recovery on the W7-AS Stellarator with External Magnetic Information Using Function Parametrization (2000)

Callaghan, H.P., McCarthy, P., Geiger, J.

Operational Conditions and Characteristics of ELM-Events during H-Mode Plasmas in the Stellarator W7-AS (2000)

Hirsch, M., Grigull, P., Wobig, H., Kisslinger, J., McCormick, K., Anton, M., ...

ECRH and ECCD at High Power Density at W7-AS (2000)

Litvak, A.G., Maaßberg, H., Beidler, C. D., Erckmann, V., Gasparino, U., Geiger, J., ...

Pressure Profile Recovery on W7-AS with Idealized External Magnetic Measurements Using Function Parametrization (2000)

Callaghan, H. P., McCarthy, P., Geiger, J.

ECRH and ECCD at High Power Density at W7-AS (2000)

Maaßberg, H., Beidler, C.D., Erckmann, V., Gasparino, U., Geiger, J., Laqua, H., ...

Flexible, Distributed and Adaptive Resource Management in MoDiS (2000)

P. P. Spies, C. Eckert, M. Pizka, C. Czech, J. Geiger, C. Rehn

Currently, a shift of paradigm from sequential to distributed computing can be observed. Great efforts are needed to cope with the challenging demands that are inherent to this transition. The most...

Whisker als Verstaerkungskomponente von Verbundwerkstoffen, Verfahrenstechnische Methoden zur Ausrichtung (Whisker Reinforcement of Composite Materials: Alignment Procedures), (1998)

Geiger,J., Fueller,J.

Text in German.

Recent Observations of MHD Instabilities on W7-AS. (1998)

Anton,M., Klinger,T., Häse,M., Zoletnik,S., Geiger,J., Görner,C., ...

The Role of Magnetic Shear in the Confinement of W7-AS Plasmas (1998)

Brakel,R., Anton,M., Erckmann,V., Fiedler,S., Geiger,J., ...

Recent Observations of MHD Instabilities on W7-AS. (1998)

Anton, M., Klinger, T., Häse, M., Zoletnik, S., Geiger, J., Görner, C., ...

The Role of Magnetic Shear in the Confinement of W7-AS Plasmas (1998)

Brakel, R., Anton, M., Erckmann, V., Fiedler, S., Geiger, J., ...

ANNEALING AND HYDROGENATION BEHAVIOUR OF EVAPORATED AND SPUTTERED HIGH-PURITY AMORPHOUS SILICON FILMS (1981)

Kniffler, N., Müller, W., Pirrung, J., Hänisch, N., Schröder, B., Geiger, J.

Amorphous silicon films have been prepared by ultra-clean evaporation and sputter technique enclosing different amounts of hydrogen into the films. The dark conductivity of both types of films can be...

ANNEALING AND HYDROGENATION BEHAVIOUR OF EVAPORATED AND SPUTTERED HIGH-PURITY AMORPHOUS SILICON FILMS (1981)

Kniffler, N., Müller, W., Pirrung, J., Hänisch, N., Schröder, B., Geiger, J.

Amorphous silicon films have been prepared by ultra-clean evaporation and sputter technique enclosing different amounts of hydrogen into the films. The dark conductivity of both types of films can be...

ANNEALING AND HYDROGENATION BEHAVIOUR OF EVAPORATED AND SPUTTERED HIGH-PURITY AMORPHOUS SILICON FILMS (1981)

Kniffler, N., Müller, W., Pirrung, J., Hänisch, N., Schröder, B., Geiger, J.

Amorphous silicon films have been prepared by ultra-clean evaporation and sputter technique enclosing different amounts of hydrogen into the films. The dark conductivity of both types of films can be...

Equilibrium and stability of high-ß plasmas in W7-AS

Geiger,J., Weller,A., Zarnstorff,M., Nührenberg,C., Werner,A., Kolesnichenko,Ya. I., ...

Wendelstein 7-AS results relevant for Wendelstein 7-X

Klinger,T., Baldzuhn,J., Baeumel,S., Brakel,R., Burhenn,R., Dinklage,A., ...

Equilibrium calculations for the W7-AS stellarator with large internal current densities due to ECCD

Geiger,J., Maassberg,H., Marushchenko,N., Romé,M., Weller,A.

Development of Function Parametrization on W7-X Stellarator

Sengupta,A., McCarthy,P. J., Geiger,J., Werner,A.

Experiments close to the beta-limit in W7-AS

Weller,A., Geiger,J., Werner,A., Zarnstorff,M. C., Nührenberg,C., Sallander,E., ...

Analysis of ECCD scenario for the W7-X Stellarator by the high field side ECE measurements

Marushchenko,N. B., Maaßberg,H., Geiger,J., Hartfuss,H., Turkin,Yu.

Predictive transport modeling for the W7-X

Turkin,Yu., Maaßberg,H., Beidler,C. D., Geiger,J., Marushchenko,N. B.

Magnetic Diagnostics for long pulse operation in Wendelstein 7-X

Werner,A., Geiger,J., Weller,A., Zegenhagen,S.

Equilibrium and Stability of High-Beta Plasmas in Wendelstein 7-AS

Zarnstorff,M., Weller,A., Geiger,J., Fredrickson,E., Hudson,S., Knauer,J., ...

Integrated Measurements and Analysis in Fusion Plasmas

Svensson,J., Dinklage,A., Fischer,R., Geiger,J.

Confinement Relevant Alfvén Instabilities in Wendelstein 7-AS

Yakovenko,Y. V., Kolesnichenko,Y. I., Lutsenko,V. V., Weller,A., Werner,A., Zegenhagen,S., ...

Equilibrium and stability in ECCD discharges of W7-AS

Geiger,J., Maassberg,H., Marushchenko,N. B., Romé,M., Weller,A., Werner,A.

Assessment of Global Stellarator Confinement: Status of the International Stellarator Confinement Scaling Data Base

Dinklage,A., Ascasibar,E., Beidler,C. D., Dose,V., Geiger,J., Harris,J. H., ...

A magnetic configuration database and application programming interface for Wendelstein 7-X

Dinklage,A., Geiger,J., Kuehner,G., Schmidt,M., Werner,A.

VENUS+δf - A Bootstrap Current Calculation Module for 3D Configurations

Isaev,M. Yu., Brunner,S., Cooper,W. A., Tran,T. M., Bergmann,A., Beidler,C. D., ...

Effects of fast-ion-orbit width on Alfvén instabilities in stellarators: a general theory and its application to a W7-AS experiment

Kolesnichenko,Ya. I., Lutsenko,V. V., Weller,A., Werner,A., Wobig,H., Yakovenko,Yu. V., ...

Novel physics involved in interpretation of Alfvénic activity accompanied by thermal crashes in W7-AS

Kolesnichenko,Ya. I., Lutsenko,V. V., Weller,A., Werner,A., Wobig,H., Yakovenko,Yu. V., ...

The Equilibrium β Limit in W7-AS

Reiman,A., Zarnstorff,M., Monticello,D., Weller,A., Geiger,J.

Statistical Analysis of the Equilibrium Configurations of the W7-X Stellarator Using Function Parameterization

McCarthy,P. J., Sengupta,A., Geiger,J., Werner,A.

Current control by ECCD for W7-X

Turkin,Yu., Maaßberg,H., Beidler,C. D., Geiger,J., Marushchenko,N. B.

Significance of MHD Effects in Stellarator Confinement

Weller,A., Sakakibara,S., Watanabe,K.Y., Toi,K., Geiger,J., Zarnstorff,M. C., ...

Role of cGMP and cGMP-dependent protein kinase in nitrovasodilator inhibition of agonist-evoked calcium elevation in human platelets.

Geiger, J, Nolte, C, Butt, E, Sage, S O, Walter, U

Most platelet agonists activate and elevate the cytosolic free calcium concentration in human platelets through receptor-dependent mechanisms that are antagonized by cAMP- and cGMP-elevating agents....

Role of cGMP and cGMP-dependent protein kinase in nitrovasodilator inhibition of agonist-evoked calcium elevation in human platelets.

Geiger, J, Nolte, C, Butt, E, Sage, S O, Walter, U

Most platelet agonists activate and elevate the cytosolic free calcium concentration in human platelets through receptor-dependent mechanisms that are antagonized by cAMP- and cGMP-elevating agents....

Equilibrium and stability of high-ß plasmas in W7-AS

Geiger, J., Weller, A., Zarnstorff, M., Nührenberg, C., Werner, A., Kolesnichenko, Ya. I., ...

Wendelstein 7-AS results relevant for Wendelstein 7-X

Klinger, T., Baldzuhn, J., Baeumel, S., Brakel, R., Burhenn, R., Dinklage, A., ...

Equilibrium calculations for the W7-AS stellarator with large internal current densities due to ECCD

Geiger, J., Maassberg, H., Marushchenko, N., Romé, M., Weller, A.

Development of Function Parametrization on W7-X Stellarator

Sengupta, A., McCarthy, P. J., Geiger, J., Werner, A.

Experiments close to the beta-limit in W7-AS

Weller, A., Geiger, J., Werner, A., Zarnstorff, M. C., Nührenberg, C., Sallander, E., ...

Analysis of ECCD scenario for the W7-X Stellarator by the high field side ECE measurements

Marushchenko, N. B., Maaßberg, H., Geiger, J., Hartfuss, H., Turkin, Yu.

Predictive transport modeling for the W7-X

Turkin, Yu., Maaßberg, H., Beidler, C. D., Geiger, J., Marushchenko, N. B.

Magnetic Diagnostics for long pulse operation in Wendelstein 7-X

Werner, A., Geiger, J., Weller, A., Zegenhagen, S.

Equilibrium and Stability of High-Beta Plasmas in Wendelstein 7-AS

Zarnstorff, M., Weller, A., Geiger, J., Fredrickson, E., Hudson, S., Knauer, J., ...

Integrated Measurements and Analysis in Fusion Plasmas

Svensson, J., Dinklage, A., Fischer, R., Geiger, J.

Confinement Relevant Alfvén Instabilities in Wendelstein 7-AS

Yakovenko, Y. V., Kolesnichenko, Y. I., Lutsenko, V. V., Weller, A., Werner, A., Zegenhagen, S., ...

Analysis of diamagnetic measurements on W7-AS

Geiger, J.

Equilibrium and stability in ECCD discharges of W7-AS

Geiger, J., Maassberg, H., Marushchenko, N. B., Romé, M., Weller, A., Werner, A.

Assessment of Global Stellarator Confinement: Status of the International Stellarator Confinement Scaling Data Base

Dinklage, A., Ascasibar, E., Beidler, C. D., Dose, V., Geiger, J., Harris, J. H., ...

A magnetic configuration database and application programming interface for Wendelstein 7-X

Dinklage, A., Geiger, J., Kuehner, G., Schmidt, M., Werner, A.

Magnetic configurations represent key information both for the interpretation of experimental data as well as for physical modelling of stellarator plasmas. In the preparatory stage of a fusion...

VENUS+δf - A Bootstrap Current Calculation Module for 3D Configurations

Isaev, M. Yu., Brunner, S., Cooper, W. A., Tran, T. M., Bergmann, A., Beidler, C. D., ...

Effects of fast-ion-orbit width on Alfvén instabilities in stellarators: a general theory and its application to a W7-AS experiment

Kolesnichenko, Ya. I., Lutsenko, V. V., Weller, A., Werner, A., Wobig, H., Yakovenko, Yu. V., ...

Novel physics involved in interpretation of Alfvénic activity accompanied by thermal crashes in W7-AS

Kolesnichenko, Ya. I., Lutsenko, V. V., Weller, A., Werner, A., Wobig, H., Yakovenko, Yu. V., ...

The Equilibrium β Limit in W7-AS

Reiman, A., Zarnstorff, M., Monticello, D., Weller, A., Geiger, J.

Statistical Analysis of the Equilibrium Configurations of the W7-X Stellarator Using Function Parameterization

McCarthy, P. J., Sengupta, A., Geiger, J., Werner, A.

Current control by ECCD for W7-X

Turkin, Yu., Maaßberg, H., Beidler, C. D., Geiger, J., Marushchenko, N. B.