High-spin gamma-ray spectroscopy in 52Mn (2007)
Axiotis, M., Lenzi, S. M., Mărginean, N., Napoli, D. R., Ur, C. A., Brandolini, F., ...
The electromagnetic decay properties of high-spin states in 52Mn have been studied through various experiments with the GASP and EUROBALL arrays plus the ISIS light charged-particle detector and the...
IBM-1 description of the fission products $^{108,110,112}$Ru (2007)
Stefanescu, I., Gelberg, A., Jolie, J., Van Isacker, P., Von Brentano, P., Luo, Y.X., ...
IBM-1 calculations for the fission products $^{108,110,112}$Ru have been carried out. The even-even isotopes of Ru can be described as transitional nuclei situated between the U(5) (spherical...
IBM-1 description of the fission products $^{108,110,112}$Ru (2007)
Stefanescu, I., Gelberg, A., Jolie, J., Van Isacker, P., Von Brentano, P., Luo, Y.X., ...
IBM-1 calculations for the fission products $^{108,110,112}$Ru have been carried out. The even-even isotopes of Ru can be described as transitional nuclei situated between the U(5) (spherical...
IBM-1 description of the fission products $^{108,110,112}$Ru (2007)
Stefanescu, I., Gelberg, A., Jolie, J., Van Isacker, P., Von Brentano, P., Luo, Y.X., ...
IBM-1 calculations for the fission products $^{108,110,112}$Ru have been carried out. The even-even isotopes of Ru can be described as transitional nuclei situated between the U(5) (spherical...
IBM-1 description of the fission products $^{108,110,112}$Ru (2007)
Stefanescu, I., Gelberg, A., Jolie, J., Van Isacker, P., Von Brentano, P., Luo, Y. X., ...
IBM-1} calculations for the fission products $^{108,110,112}$Ru have been carried out. The even-even isotopes of Ru can be described as transitional nuclei situated between the U(5) (spherical...
On the mixing strength in the two lowest 0- states in 208Pb (2006)
Heusler, A., Graw, G., Hertenberger, R., Riess, F., Kruecken, R., ...
With a resolution of 3 keV, the two lowest 0- states in 208Pb are identified by measurements of the reaction 207Pb(d, p) with the Muenchen Q3D magnetic spectrograph in a region where the average...
Extensive investigation of 0+ states in rare earth region nuclei (2006)
Meyer, D.A., Wood, V., Casten, R. F., Fitzpatrick, C. R., Graw, G., Bucurescu, D., ...
The nature of 0+ excitations, especially in transitional and deformed nuclei, has attracted new attention. Following a recent experiment studying 158Gd, we investigated a large group of nuclei in the...
The i11/2 f5/2 and i11/2 p3/2 neutron particle-hole multiplets in 208Pb (2006)
Heusler, A., Graw, G., Hertenberger, R., Riess, F., Faestermann, T., ...
Inelastic proton scattering via isobaric analog resonances allows to derive rather complete information about neutron particle-hole states. We applied this method to the doubly-magic nucleus 208Pb by...
Reply to "Comment on 'Nuclear structure of $^{124}$Xe'" (2005)
Saha, B., Dewald, A., Möller, O., Peusquens, R., Jessen, K., Fitzler, A., ...
Erratum: Probing nuclear structure of $^{124}$Xe (2005)
Saha, B., Dewald, A., Möller, O., Peusquens, R., Jessen, K., Fitzler, A., ...
Reply to "Comment on 'Nuclear structure of $^{124}$Xe'" (2005)
Saha, B., Dewald, A., Möller, O., Peusquens, R., Jessen, K., Fitzler, A., ...
Erratum: Probing nuclear structure of $^{124}$Xe (2005)
Saha, B., Dewald, A., Möller, O., Peusquens, R., Jessen, K., Fitzler, A., ...
Alternative Interpretation of Sharply Rising E0 Strengths in Transitional Regions (2004)
Von Brentano, P., Werner, V., Casten, R. F., Scholl, C., McCutchan, E. A., Kruecken, R., ...
It is shown that strong 0+2 -> 0+1 E0 transitions provide a clear signature of phase transitional behavior in finite nuclei. Calculations using the IBA show that these transition strengths exhibit a...
Triaxiality and the determination of the cubic shape parameter K3 from five observables (2004)
Werner, V., Scholl, C., Von Brentano, P.
The absolute and the relative quadrupole shape invariants q3 and K3 provide a model independent measure of triaxiality for beta-rigid nuclei. We will show that one can obtain q3 and K3 from a small...
Probing nuclear structure of $^{124}$Xe (2004)
Saha, B., Dewald, A., Möller, O., Peusquens, R., Jessen, K., Fitzler, A., ...
Probing nuclear structure of $^{124}$Xe (2004)
Saha, B., Dewald, A., Möller, O., Peusquens, R., Jessen, K., Fitzler, A., ...
Supersymmetry and Identical Bands (2003)
Supersymmetry as applied to identical bands is discussed. A review of the work of the Koeln-Dubna group on this topic is given and examples in 171,172Yb, 173,174Hf, and 195,194Pt are discussed. The...
Lisetskiy, A. F., Pietralla, N., Honma, M., Schmidt, A., Schneider, I., Gade, A., ...
Low-spin states in the odd-odd N=Z nucleus 58Cu were investigated with the 58Ni(p,n gamma)58Cu fusion evaporation reaction at the FN-tandem accelerator in Cologne. Seventeen low spin states below 3.6...
Investigation of low spin states in 48-Cr with the MINIBALL spectrometer (2003)
Jessen, K., Dewald, A., Eberth, J., Gersch, G., Jolie, J., Pietralla, N., ...
Low spin states in the self-conjugate even-even nucleus 48-Cr were investigated using the MINIBALL gamma-ray spectrometer. At the FN tandem accelerator in Cologne the 46-Ti(3-He,n) reaction was used...
Transition rates and nuclear structure changes in mirror nuclei 47Cr and 47V (2002)
Tonev, D., Petkov, P., Dewald, A., Klug, T., Von Brentano, P., Andrejtscheff, W., ...
Lifetime measurements in the mirror nuclei 47Cr and 47V were performed by means of the Doppler-shift attenuation method using the multidetector array EUROBALL, in conjunction with the ancillary...
Mixing of bound and unbound levels (2002)
Von Brentano, P., Jolos, R. V., Weidenmüller, H. A.
We consider a system of two discrete levels coupled to a channel. The levels are close to threshold. We investigate the influence of the channel threshold on positions and widths of the levels. We...
Mixing of bound and unbound levels (2002)
Von Brentano, P., Jolos, R.V., Weidenmüller, H.A.
We consider a system of two discrete levels coupled to a channel. The levels are close to threshold. We investigate the influence of the channel threshold on positions and widths of the levels. We...
Singular Character of Critical Points in Nuclei (2001)
Werner, V., Von Brentano, P., Casten, R. F., Jolie, J.
The concept of critical points in nuclear phase transitional regions is discussed from the standpoints of Q-invariants, simple observables and wave function entropy. It is shown that these critical...
Simple relations among E2 matrix elements of low-lying collective states (2001)
Werner, V., Von Brentano, P., Jolos, R. V.
A method is developed to derive simple relations among the reduced matrix elements of the quadrupole operator between low-lying collective states. As an example, the fourth order scalars of Q are...
Quasideuteron states with deformed core (2001)
Lisetskiy, A. F., Gelberg, A., Jolos, R. V., Pietralla, N., Von Brentano, P.
The M1 transitions between low-lying T=1 and T=0 states in deformed odd-odd N=Z nuclei are analyzed in the frames of the rotor-plus-particle model. Using the representation of an explicit coupling of...
Lifetime measurements with the Euroball spectrometer (2001)
Dewald, A., Kemper, G., Peusquens, R., Fitzler, A., Kasemann, S., Wiedenhover, I., ...
Coulomb Energy Differences in T = 1 Mirror Rotational Bands in $^{50}$Fe and $^{50}$Cr (2001)
Lenzi, S.M., Marginean, N., Napoli, D.R., Ur, C.A., Zuker, A.P., De Angelis, G., ...
Lifetime measurements with the Euroball spectrometer (2001)
Dewald, A., Kemper, G., Peusquens, R., Fitzler, A., Kasemann, S., Wiedenhover, I., ...
Coulomb Energy Differences in T = 1 Mirror Rotational Bands in $^{50}$Fe and $^{50}$Cr (2001)
Lenzi, S.M., Marginean, N., Napoli, D.R., Ur, C.A., Zuker, A.P., De Angelis, G., ...
Spreading widths for superdeformed states in Hg-194 and Pb-194 (2001)
Krucken, R., Dewald, A., Von Brentano, P., Weidenmüller, H. A.
Using several theoretical models, we have obtained estimates for the spreading widths Gamma (!) for the decay out of a superdeformed (SD) band. We pay particular attention to the statistical model by...
Spreading widths for superdeformed states in Hg-194 and Pb-194 (2001)
Krucken, R., Dewald, A., Von Brentano, P., Weidenmüller, H. A.
Using several theoretical models, we have obtained estimates for the spreading widths Gamma (!) for the decay out of a superdeformed (SD) band. We pay particular attention to the statistical model by...
Quasideuteron configurations in 46V and 58Cu (2000)
Von Brentano, P., Lisetskiy, A. F., Dewald, A., Friessner, C., Schmidt, A., Schneider, I., ...
The data on low spin states in the odd-odd nuclei 46V and 58Cu investigated with the 46Ti(p,ngamma)46V, 32S(16O,pn)46V and 58Ni(p,ngamma)58Cu reactions at the FN-TANDEM accelerator in Cologne are...
Low-Spin Spectroscopy of 50Mn (2000)
Von Brentano, P., Dewald, A., Friessner, C., Lisetskiy, A. F., Pietralla, N., Schneider, I., ...
The data on low spin states in the odd-odd nucleus 50Mn investigated with the 50Cr(p,ngamma)50Mn fusion evaporation reaction at the FN-TANDEM accelerator in Cologne are reported. Shell model and...
Shell model description of "mixed-symmetry" states in 94Mo (2000)
Lisetskiy, A. F., Pietralla, N., Fransen, C., Jolos, R. V., Von Brentano, P.
Shell model calculations have been performed for the nucleus 94Mo. The calculated excitation energies and electromagnetic properties of low-lying states are in good agreement with the data, which...
Quadrupole shape invariants in the interacting boson model (2000)
Werner, V., Pietralla, N., Von Brentano, P., Casten, R. F., Jolos, R. V.
In terms of the Interacting Boson Model, shape invariants for the ground state, formed by quadrupole moments up to sixth order, are studied in the dynamical symmetry limits and, for the first time,...
Bryssinck, J., Govor, L., Beck, O., Belic, D., Von Brentano, P., ...
The odd-mass $^{117}$Sn nucleus was investigated in nuclear resonance fluorescence experiments up to an endpoint energy of the incident photon spectrum of 4.1 MeV at the bremsstrahlung facility of...
Formal comparison of SUSY in the nuclear U(6/2) model and in quantum field theory (1999)
Jolos, R. V., Von Brentano, P.
A nuclear physics example of the U(6/2) supersymmetry group is considered. It is shown that this group contains a supersymmetric subgroup with a structure similar to the SUSY model of the quantum...
Parity splitting in the alternating parity bands of some actinide nuclei (1999)
Jolos, R. V., Von Brentano, P.
An angular momentum dependence of the parity splitting in the alternating parity bands of nuclei with strong octupole correlations is considered basing on the model of the octupole motion in a...
Transition Rates between Mixed Symmetry States: First Measurement in 94Mo (1999)
Pietralla, N., Fransen, C., Belic, D., Von Brentano, P., Friessner, C., Kneissl, U., ...
The nucleus 94Mo was investigated using a powerful combination of gamma-singles photon scattering experiments and gamma-gamma-coincidence studies following the beta-decay of 94mTc. The data survey...
Quasi-Deuteron Configurations in odd-odd N=Z nuclei (1999)
Lisetskiy, A. F., Jolos, R. V., Pietralla, N., Von Brentano, P.
The isovector M1 transitions between low-lying T=1 and T=0 states in odd-odd N=Z nuclei are analyzed. Simple analytical expressions for M1 transition strengths are derived within a single-j-shell...
Strong fragmentation of low-energy electromagnetic excitation strength in $^{117}$Sn (1999)
Ponomarev, V. Yu., Bryssinck, J., Govor, L., Bauwens, F., Beck, O., Belic, D., ...
Results of nuclear resonance fluorescence experiments on $^{117}$Sn are reported. More than 50 $\gamma$ transitions with $E_{\gamma} < 4$ MeV were detected indicating a strong fragmentation of the...
Spreading Width for Decay out of a Superdeformed Band (1998)
Weidenmueller, H. A., Von Brentano, P., Barrett, B. R.
The attenuation factor F responsible for the decay out of a superdeformed (SD) band is calculated with the help of a statistical model. This factor is given by 1/F = (1 + Gamma(down) / Gamma(S))....
Odd-spin yrast states as multiple quadrupole-phonon excitations (1998)
Pietralla, N., Von Brentano, P., Otsuka, T., Casten, R. F.
The wavefunctions of the lowest odd spin positive parity yrast states in the IBA are shown to be nearly pure multiple quadrupole-phonon excitations even outside the three dynamical symmetries. The...
The decay out of the superdeformed band in $^{194}Pb$ : electromagnetic properties (1997)
Krücken, R, Asztalos, S J, Becker, J A, Busse, B, Clark, R M, Deleplanque, M A, ...
The 2S lamb shift in hydrogenic phosphorus by laser spectroscopy (1990)
Gassen, J., Muller, D., Budelsky, D., Kremer, L., Pross, H.J., Scheuer, F., ...
The 2S lamb shift in hydrogenic phosphorus by laser spectroscopy (1990)
Gassen, J., Muller, D., Budelsky, D., Kremer, L., Pross, H.J., Scheuer, F., ...
Interplay between proton and neutron s-bands in the Xe-Ba-Ce-region (1989)
Wyss, R., Granderath, A., Bengtsson, R., Von Brentano, P., Dewald, A., Gelberg, A., ...
Interplay between proton and neutron s-bands in the Xe-Ba-Ce-region (1989)
Wyss, R., Granderath, A., Bengtsson, R., Von Brentano, P., Dewald, A., Gelberg, A., ...
Lambshift measurement in hydrogen-like Phophorus (1988)
Muller, D., Gassen, J., Kremer, L., Pross, H.J., Scheuer, F., Strater, H.D., ...
Lambshift measurement in hydrogen-like Phophorus (1988)
Muller, D., Gassen, J., Kremer, L., Pross, H.J., Scheuer, F., Strater, H.D., ...