Markova, M., Von Neumann-Cosel, P., Larsen, A. C., Bassauer, S., Goergen, A., Guttormsen, M., Garrote, F. L. Bello, Berg, H. C., Bjoroen, M. M., Dahl-Jacobsen, T., Eriksen, T. K., Gjestvang, D., Isaak, J., Mbabane, M., Paulsen, W., Pedersen, L. G., Pettersen, N. I. J., Richter, A., Sahin, E., Scholz, P., Siem, S., Tveten, G. M., Valsdottir, V. M., Wiedeking, M. and Zeiser, F. (2021). Comprehensive Test of the Brink-Axel Hypothesis in the Energy Region of the Pygmy Dipole Resonance. Phys. Rev. Lett., 127 (18). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

The validity of the Brink-Axel hypothesis, which is especially important for numerous astrophysical calculations, is addressed for 116,120,124Sn below the neutron separation energy by means of three independent experimental methods. The gamma-ray strength functions (GSFs) extracted from primary gamma-decay spectra following charged-particle reactions with the Oslo method and with the shape method demonstrate excellent agreement with those deduced from forward-angle inelastic proton scattering at relativistic beam energies. In addition, the GSFs are shown to be independent of excitation energies and spins of the initial and final states. The results provide a critical test of the generalized Brink-Axel hypothesis in heavy nuclei, demonstrating its applicability in the energy region of the pygmy dipole resonance.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Markova, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Von Neumann-Cosel, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Larsen, A. C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bassauer, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Goergen, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Guttormsen, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Garrote, F. L. BelloUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Berg, H. C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bjoroen, M. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dahl-Jacobsen, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Eriksen, T. K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gjestvang, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Isaak, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mbabane, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Paulsen, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pedersen, L. G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pettersen, N. I. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Richter, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sahin, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Scholz, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Siem, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tveten, G. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Valsdottir, V. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wiedeking, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zeiser, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-594213
DOI: 10.1103/PhysRevLett.127.182501
Journal or Publication Title: Phys. Rev. Lett.
Volume: 127
Number: 18
Date: 2021
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 1079-7114
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
PHOTON STRENGTH FUNCTIONS; CROSS-SECTIONS; DECAY; EXCITATIONS; STATES; NUCLEIMultiple languages
Physics, MultidisciplinaryMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/59421

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