N=38 sub-shell closure behavior of B(E2: 0{sub 1}{sup +} {yields} 2{sub 1}{sup +}) around 68Ni: Seniority and p-n interaction

Journal Article · Mon Feb 12 00:00:00 EST 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2710570· OSTI ID:21054805

Deloncle, Isabelle ^[1]; Roussiere, Brigitte ^[2]

---

1. CSNSM, IN2P3/CNRS and Universite Paris-Sud, F-91405 Orsay Campus (France)
2. IPN, IN2P3/CNRS and Universite Paris-Sud, F-91405 Orsay Campus (France)

Some experimental data are analyzed to probe the sub-shell structure at N{approx_equal}40. It shows no clear evidence for magic number but is in agreement with a neutron sub-shell closure more probably located at N=38. The B(E2: 0{sub 1}{sup +} {yields} 2{sub 1}{sup +}) transition probability curves of even-even nuclei from 56Ni to 82Ge are confronted with results of calculations performed in an approximation of the generalized seniority and shown to fit with the N=38 sub-shell closure and a scenario involving p-n interaction accordingly to the Federmann and Pittel mechanism.

• OSTI ID: 21054805
• Journal Information: AIP Conference Proceedings, Vol. 884, Issue 1; Conference: 6. Latin American symposium on nuclear physics and applications, Iguazu (Argentina), 3-7 Oct 2005; Other Information: DOI: 10.1063/1.2710570; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
APPROXIMATIONS
E2-TRANSITIONS
GERMANIUM 82
MAGIC NUCLEI
NEUTRONS
NICKEL 56
NICKEL 68
NUCLEAR STRUCTURE
PROBABILITY
PROTON-NEUTRON INTERACTIONS
SHELL MODELS