Beck, T. ; Beller, J. ; Pietralla, N. ; Bhike, M. ; Birkhan, J. ; Derya, V. ; Gayer, U. ; Hennig, A. ; Isaak, J. ; Löher, B. ; Ponomarev, V. Yu. ; Richter, A. ; Romig, C. ; Savran, D. ; Scheck, M. ; Tornow, W. ; Werner, V. ; Zilges, A. ; Zweidinger, M. (2017)
E2 decay strength of the M1 scissors mode of Gd-156 and its first excited rotational state.
In: Physical Review Letters, 118 (21)
doi: 10.1103/PhysRevLett.118.212502
Article, Bibliographie
Abstract
The E2/M1 multipole mixing ratio δ1→2 of the 1+sc→2+1 γ-ray decay in 156Gd and hence the isovector E2 transition rate of the scissors mode of a well-deformed rotational nucleus has been measured for the first time. It has been obtained from the angular distribution of an artificial quasimonochromatic linearly polarized γ-ray beam of energy 3.07(6) MeV scattered inelastically off an isotopically highly enriched 156Gd target. The data yield first direct support for the deformation dependence of effective proton and neutron quadrupole boson charges in the framework of algebraic nuclear models. First evidence for a low-lying Jπ=2+ member of the rotational band of states on top of the 1+ band head is obtained, too, indicating a significant signature splitting in the K=1 scissors mode rotational band.
| Item Type: | Article |
|---|---|
| Erschienen: | 2017 |
| Creators: | Beck, T. ; Beller, J. ; Pietralla, N. ; Bhike, M. ; Birkhan, J. ; Derya, V. ; Gayer, U. ; Hennig, A. ; Isaak, J. ; Löher, B. ; Ponomarev, V. Yu. ; Richter, A. ; Romig, C. ; Savran, D. ; Scheck, M. ; Tornow, W. ; Werner, V. ; Zilges, A. ; Zweidinger, M. |
| Type of entry: | Bibliographie |
| Title: | E2 decay strength of the M1 scissors mode of Gd-156 and its first excited rotational state |
| Language: | English |
| Date: | 26 May 2017 |
| Publisher: | American Physical Society |
| Journal or Publication Title: | Physical Review Letters |
| Volume of the journal: | 118 |
| Issue Number: | 21 |
| DOI: | 10.1103/PhysRevLett.118.212502 |
| Abstract: | The E2/M1 multipole mixing ratio δ1→2 of the 1+sc→2+1 γ-ray decay in 156Gd and hence the isovector E2 transition rate of the scissors mode of a well-deformed rotational nucleus has been measured for the first time. It has been obtained from the angular distribution of an artificial quasimonochromatic linearly polarized γ-ray beam of energy 3.07(6) MeV scattered inelastically off an isotopically highly enriched 156Gd target. The data yield first direct support for the deformation dependence of effective proton and neutron quadrupole boson charges in the framework of algebraic nuclear models. First evidence for a low-lying Jπ=2+ member of the rotational band of states on top of the 1+ band head is obtained, too, indicating a significant signature splitting in the K=1 scissors mode rotational band. |
| Uncontrolled Keywords: | Deutsche Forschungsgemeinschaft, DFG, German Research Foundation, SFB 1245, Project-ID 279384907, BMBF, Grant No. 05P15RDEN |
| Additional Information: | Art.No.: 212502 |
| Divisions: | DFG-Collaborative Research Centres (incl. Transregio) DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 1245: Nuclei: From Fundamental Interactions to Structure and Stars 05 Department of Physics 05 Department of Physics > Institute of Nuclear Physics 05 Department of Physics > Institute of Nuclear Physics > Experimentelle Kernphysik 05 Department of Physics > Institute of Nuclear Physics > Experimentelle Kernphysik > Experimentelle Kernstruktur und S-DALINAC |
| Date Deposited: | 20 Dec 2023 11:23 |
| Last Modified: | 13 Feb 2024 09:17 |
| PPN: | 515524778 |
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