Published September 2009
| Version v1
Journal article
Shape evolution in self-conjugate nuclei, and the transitional nucleus 68Se
Creators
- 1. CEA, Centre de Saclay, IRFU/Service de Physique Nucleaire, F-91191 Gif-sur-Yvette (France)
- 2. National Superconducting Cyclotron Laboratory, East Lansing (United States)
- 3. CEA, DAM, DIF, F-91297 Arpajon (France)
- 4. Michigan State University, East Lansing (United States)
Description
We report on the first measurement of the absolute transition strength B(E2;01+→21+) in the self-conjugate nucleus 68Se. It is found that the 01+→21+ transition displays a strength similar to that for the triaxial 64Ge nucleus, in sharp contrast to the much stronger collectivity observed for the oblate 72Kr nucleus. Shape evolution along the N=Z line from zinc to strontium is analyzed through beyond-mean-field calculations using the D1S force. Over this narrow mass region the nuclear structure shows clear-cut transition from prolate to oblate and back to prolate, with 68Se standing as pivotal between triaxial and oblate deformations.
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review. C, Nuclear Physics
- Journal Volume
- 80
- Journal Issue
- 3
- Journal Page Range
- p. 031304-031304.4
- ISSN
- 0556-2813
- CODEN
- PRVCAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 41039859
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- EVOLUTION; GERMANIUM 64; KRYPTON 72; MASS; MEAN-FIELD THEORY; NUCLEAR STRUCTURE; SELENIUM 68; TRANSITION ELEMENTS
- Descriptors DEC
- BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTS; EVEN-EVEN NUCLEI; GERMANIUM ISOTOPES; INTERMEDIATE MASS NUCLEI; ISOTOPES; KRYPTON ISOTOPES; METALS; MINUTES LIVING RADIOISOTOPES; NUCLEI; RADIOISOTOPES; SECONDS LIVING RADIOISOTOPES; SELENIUM ISOTOPES
Optional Information
- Notes
- (c) 2009 The American Physical Society