T. Johansson

Publication List Details

Period

1971 - 2008

Number

87

Co-Authors

Magnetosphere-ionosphere coupling during periods of extended high auroral activity: a case study (2008)

Liléo, S., Marklund, G. T., Karlsson, T., Johansson, T., Marchaudon, A., ...

Results are presented from a case study of a plasma boundary crossing by the Cluster spacecraft during an extended period of high auroral activity. The boundary between the magnetotail lobe region of...

On the profile of intense high-altitude auroral electric fields at magnetospheric boundaries (2008)

Johansson, T., Marklund, G., Karlsson, T., Liléo, S., Marchaudon, A., ...

The profile of intense high-altitude electric fields on auroral field lines has been studied using Cluster data. A total of 41 events with mapped electric field magnitudes in the range between 0.5–1...

Magnetosphere-ionosphere coupling during periods of extended high auroral activity: a case study (2008)

Liléo, S., Marklund, G. T., Karlsson, T., Johansson, T., Marchaudon, A., ...

Results are presented from a case study of a plasma boundary crossing by the Cluster spacecraft during an extended period of high auroral activity. The boundary between the magnetotail lobe region of...

On the profile of intense high-altitude auroral electric fields at magnetospheric boundaries (2008)

Johansson, T., Marklund, G., Karlsson, T., Liléo, S., Marchaudon, A., ...

The profile of intense high-altitude electric fields on auroral field lines has been studied using Cluster data. A total of 41 events with mapped electric field magnitudes in the range between 0.5–1...

Isospin dependence of the eta prime meson production in nucleon-nucleon collisions (2008)

Przerwa, J., Moskal, P., Budzanowski, A., Czerwinski, E., Czyzykiewicz, R., Gil, D., ...

A comparison of the close-to-threshold total cross section for the eta prime production in pp --> pp eta prime and pn --> pn eta prime reactions constitutes a tool to investigate the eta prime meson...

Scale sizes of intense auroral electric fields observed by Cluster (2008)

Johansson, T., Marklund, G., Karlsson, T., Liléo, S., Nilsson, H., ...

The scale sizes of intense (>0.15 V/m, mapped to the ionosphere), high-altitude (4?7 RE geocentric distance) auroral electric fields (measured by the Cluster EFW instrument) have been determined in a...

A statistical study of intense electric fields at 4?7 RE geocentric distance using Cluster (2008)

Johansson, T., Karlsson, T., Marklund, G., Figueiredo, S., Buchert, S.

Intense high-latitude electric fields (>150 mV/m mapped to ionospheric altitude) at 4?7 RE geocentric distance have been investigated in a statistical study, using data from the Cluster satellites....

Temporal and spatial evolution of discrete auroral arcs as seen by Cluster (2008)

Figueiredo, S., Marklund, G. T., Karlsson, T., Johansson, T., Ebihara, Y., Ejiri, M., ...

Two event studies are presented in this paper where intense convergent electric fields, with mapped intensities up to 1350 mV/m, are measured in the auroral upward current region by the Cluster...

Intense high-altitude auroral electric fields - temporal and spatial characteristics (2008)

Johansson, T., Figueiredo, S., Karlsson, T., Marklund, G., Fazakerley, A., Buchert, S., ...

Cluster electric field, magnetic field, and energetic electron data are analyzed for two events of intense auroral electric field variations, both encountered in the Plasma Sheet Boundary Layer...

Separating spatial and temporal variations in auroral electric and magnetic fields by Cluster multipoint measurements (2008)

Karlsson, T., Marklund, G. T., Figueiredo, S., Johansson, T., Buchert, S.

Cluster multipoint measurements of the electric and magnetic fields from a crossing of auroral field lines at an altitude of 4RE are used to show that it is possible to resolve the ambiguity of...

Scale sizes of intense auroral electric fields observed by Cluster (2008)

Johansson, T., Marklund, G., Karlsson, T., Liléo, S., Nilsson, H., ...

The scale sizes of intense (>0.15 V/m, mapped to the ionosphere), high-altitude (4?7 RE geocentric distance) auroral electric fields (measured by the Cluster EFW instrument) have been determined in a...

A statistical study of intense electric fields at 4?7 RE geocentric distance using Cluster (2008)

Johansson, T., Karlsson, T., Marklund, G., Figueiredo, S., Buchert, S.

Intense high-latitude electric fields (>150 mV/m mapped to ionospheric altitude) at 4?7 RE geocentric distance have been investigated in a statistical study, using data from the Cluster satellites....

Temporal and spatial evolution of discrete auroral arcs as seen by Cluster (2008)

Figueiredo, S., Marklund, G. T., Karlsson, T., Johansson, T., Ebihara, Y., Ejiri, M., ...

Two event studies are presented in this paper where intense convergent electric fields, with mapped intensities up to 1350 mV/m, are measured in the auroral upward current region by the Cluster...

Intense high-altitude auroral electric fields - temporal and spatial characteristics (2008)

Johansson, T., Figueiredo, S., Karlsson, T., Marklund, G., Fazakerley, A., Buchert, S., ...

Cluster electric field, magnetic field, and energetic electron data are analyzed for two events of intense auroral electric field variations, both encountered in the Plasma Sheet Boundary Layer...

Separating spatial and temporal variations in auroral electric and magnetic fields by Cluster multipoint measurements (2008)

Karlsson, T., Marklund, G. T., Figueiredo, S., Johansson, T., Buchert, S.

Cluster multipoint measurements of the electric and magnetic fields from a crossing of auroral field lines at an altitude of 4RE are used to show that it is possible to resolve the ambiguity of...

Characteristics of quasi-static potential structures observed in the auroral return current region by Cluster (2008)

Marklund, G. T., Karlsson, T., Figueiredo, S., Johansson, T., André, M., ...

Temporal and spatial characteristics of intense quasi-static electric fields and associated electric potential structures in the return current region are discussed using Cluster observations at...

Characteristics of quasi-static potential structures observed in the auroral return current region by Cluster (2008)

Marklund, G. T., Karlsson, T., Figueiredo, S., Johansson, T., André, M., ...

Temporal and spatial characteristics of intense quasi-static electric fields and associated electric potential structures in the return current region are discussed using Cluster observations at...

Near threshold production of the eta meson via the quasi-free pn --> pn eta reaction (2008)

Moskal, P., Czyzykiewicz, R., Bass, S. D., Budzanowski, A., Czerwinski, E., ...

Total cross sections for the quasi-free pn --> pn eta reaction in the range from the kinematical threshold up to 20 MeV excess energy have been determined. At threshold they exceed corresponding...

Double-Pionic Fusion of Nuclear Systems and the ABCEffect -- Aproaching a Puzzle by Exclusive and Kinematically Complete Measurements (2008)

Bashkanov, M., Bargholtz, C., Berlowski, M., Bogoslawsky, D., Calen, H., Clement, H., ...

The ABC effect - a puzzling low-mass enhancement in the $\pi\pi$ invariant mass spectrum - is well-known from inclusive measurements of two-pion production in nuclear fusion reactions. Here we report...

Polarisation of the omega meson in the pd-->3He+omega reaction at 1360 and 1450 MeV (2008)

Schonning, K., Bargholtz, Chr., Bashkanov, M., Berlowski, M., Bogoslawsky, D., Calen, H., ...

The tensor polarisation of omega mesons produced in the pd-->3He+omega reaction has been studied at two energies near threshold. The 3He nuclei were detected in coincidence with the pi0pi+pi- or...

The WASA Detector Facility at CELSIUS (2008)

Bargholtz, Chr., Bashkanov, M., Berłowski, M., Bondar, A., Bogoslawsky, D., Brodowski, W., ...

The WASA 4pi multidetector system, aimed at investigating light meson production in light ion collisions and eta meson rare decays at the CELSIUS storage ring in Uppsala is presented. A detailed...

Automatic fitting procedures for EPR spectra of disordered systems: matrix diagonalization and perturbation methods applied to fluorocarbon radicals (2008)

Lund, A., Andersson, P., Eriksson, J., Hallin, J., Johansson, T., Jonsson, R., ...

Two types of automatic fitting procedures for EPR spectra of disordered systems have been developed, one based on matrix diagonalisation of a general spin Hamiltonian, the other on 2nd order...

Measurement of the Slope Parameter for the eta->3pi0 Decay in the pp->pp eta Reaction (2007)

Bashkanov, M., Bogoslawsky, D., Calén, H., Capellaro, F., Clement, H., Demirörs, L., ...

The CELSIUS/WASA setup is used to measure the 3pi0 decay of eta mesons produced in pp interactions with beam kinetic energies of 1.36 and 1.45 GeV. The efficiency-corrected Dalitz plot and density...

Measurement of the eta->pi+pi-e+e- decay branching ratio (2006)

Bashkanov, M., Bogoslawsky, D., Calén, H., Capellaro, F., Clement, H., ...

The reaction pd->3He eta at threshold was used to provide a clean source of eta mesons for decay studies with the WASA detector at CELSIUS. The branching ratio of the decay eta->pi+pi-e+e- is...

Anisotropy in the pion angular distribution of the reaction pp -> pp pi0 at 400 MeV (2006)

Engblom, P. Thorngren, Keleta, S. Negasi, Cappellaro, F., Hoistad, B., Jacewicz, M., Johansson, T., ...

The reaction pp -> pp pi0 was studied with the WASA detector at the CELSIUS storage ring. The center of mass angular distribution of the pi0 was obtained by detection of the gamma decay products...

The pp -> pp pi pi pi reaction channels in the threshold region (2006)

Jacewicz, M., Koch, I., Bashkanov, M., Bogoslawsky, D., Calén, H., ...

The cross section for prompt neutral and charged three pion production in pp interactions was measured at excess energies in the range 160 - 217 MeV. That comprises the first measurement of the...

Exclusive Measurements of $pd\to ^3He \pi\pi$ : the $ABC$ Effect Revisited (2005)

Bashkanov, M., Bogoslawsky, D., Calén, H., Cappellaro, F., Clement, H., Demiroers, L., ...

Exclusive measurements of the reactions $pd\to$ $^3He \pi^+ \pi^-$ and $pd\to$ $^3He \pi^0\pi^0$ have been carried out at $T_p=0.895$ GeV at the CELSIUS storage ring using the WASA detector. The...

A method to disentangle single- and multi-meson production in missing mass spectra from quasi-free pn --> pn X reactions (2005)

Moskal, P., Budzanowski, A., Czyzykiewicz, R., Grzonka, D., Janusz, M., ...

The separation of contributions from multi- and single-meson production in the missing mass spectrum of the quasi-free pn --> pnX reaction constitutes a~challenging task when the reaction is studied...

Comparison of media for enumeration of Clostridium perfringens from foods (2003)

Eijhusen, G.P., Grand, M., Johansson, T., Kärkkäinen, T., ...

Many media have been developed to enumerate Clostridium perfringens from foods. In this study, six media [iron sulfite (IS) agar, tryptose sulfite cycloserine (TSC) agar, Shahidi Ferguson perfringens...

Measurement of the $\overline{p}p \to K_S K_S \eta$ cross section at beam momenta in the regions of 1.45 and 1.7 GeV/c (2001)

Barnes, P D, Bunker, B D, Dennert, H, Eisenstein, R A, Eyrich, W, Fischer, H, ...

The PS185 experiment at LEAR/CERN has investigated strangeness production in antiproton-proton collisions with final states such as $\overline{\Lambda} \Lambda$, $\overline{\Sigma}^0 \Lambda + c.c$,...

Higher Partial Waves in p+p->p+p+eta near Threshold (1998)

Calen, H., Dyring, J., Faldt, G., Fransson, K., Gustafsson, L., Haggstrom, S., ...

Exclusive measurements of the production of eta mesons in the p+p->p+p+eta reaction have been carried out at excess energies of 16 and 37 MeV above threshold. The deviations from phase space are...

Study of the reaction $\overline{p}p \to \phi \phi$ from 1.1 to 2.0 GeV/c (1998)

Evangelista, C, Palano, A, Drijard, Daniel, Hamann, N H, Jones, R T, Mouëllic, B, ...

A study has been performed of the reaction $\pptofourk$ using in-flight antiprotons from 1.1 to 2.0 GeV/$c$ incident momentum interacting with a hydrogen jet target. The reaction is dominated by the...

Study of the reaction pbar p -> phi phi from 1.1 to 2.0 GeV/c (1998)

Evangelista, C., Palano, A., Drijard, D., Hamann, N. H., Jones, R. T., Mouëllic, B., ...

A study has been performed of the reaction pbar p -> 4K using in-flight antiprotons from 1.1 to 2.0 GeV/c incident momentum interacting with a hydrogen jet target. The reaction is dominated by the...

Search for narrow $p\overline p$ resonances in the reaction $p\overline p\top\overline p \pi^{+}\pi^-$ (1998)

Buzzo, A, Debevec, P T, Drijard, Daniel, Eisenstein, R A, Evangelista, C, Eyrich, W, ...

The reaction pbar p -> pbar p pi+ pi- has been studied with high statistics at CERN-LEAR with incident pbar momenta from 1.65 to 2.0 GeV/c by the JETSET (PS202) experiment. The aim of this paper is...

Search for narrow pbar p resonances in the reaction pbar p>pbar p pi+pi- (1998)

Buzzo, A., Debevec, P., Drijard, D., Eisenstein, R. A., Evangelista, C., Eyrich, W., ...

The reaction pbar p -> pbar p pi+ pi- has been studied with high statistics at CERN-LEAR with incident pbar momenta from 1.65 to 2.0 GeV/c by the JETSET (PS202) experiment. The aim of this paper is...

Measurement of the pbar p -> Ks Ks Reaction from 0.6 to 1.9 GeV/c (1997)

Evangelista, C., Palano, A., Drijard, D., Hamann, N. H., Jones, R. T., Mouellic, B., ...

The pbar p -> Ks Ks -> 4pi+/- cross section was measured at incident antiproton momenta between 0.6 and 1.9 GeV/c using the CERN Low Energy Antiproton Ring (LEAR). This investigation was part of a...

Measurement of the $\overline{p}p \to Ks Ks$ Reaction from 0.6 to 1.9 GeV/c (1997)

Evangelista, C, Palano, A, Drijard, Daniel, Hamann, N H, Jones, R T, Mouëllic, B, ...

The pbar p -> Ks Ks -> 4pi+/- cross section was measured at incident antiproton momenta between 0.6 and 1.9 GeV/c using the CERN Low Energy Antiproton Ring (LEAR). This investigation was part of a...

Observables in high-statistics measurements of the reaction $\overline{p}p$ --> $\overline{\Lambda}\Lambda$ (1996)

Barnes, P D, Birien, P, Breunlich, W H, Bröders, R, Dennert, H, Diebold, G, ...

Associated strangeness production was studied in the $\bar{\rm p}{\rm p}\rightarrow \bar{\Lambda}\Lambda \rightarrow \bar{\rm p}\pi^{+} {\rm p}\pi^{-}$ reaction at the CERN antiproton facility LEAR...