Study of the N = 50 major shell effect close to 78Ni : First evidence of a weak coupling structure in 8332Ge51and three-proton configuration states in 8131Ga50

doi:10.1088/1742-6596/49/1/038

Study of the N = 50 major shell effect close to 78Ni : First evidence of a weak coupling structure in ⁸³₃₂Ge₅₁and three-proton configuration states in ⁸¹₃₁Ga₅₀

New levels were attributed to ⁸¹₃₁Ga₅₀ and ⁸³₃₂Ge₅₁ which were fed by the β-decay of their respective mother nuclei ⁸¹₃₀Zn₅₁ and ⁸³₃₁Ga₅₂ produced by fission at the "PARRNe" ISOL set-up installed at the Tandem accelerator of the Institut de Physique NucléLeaire, Orsay. We show that the low energy structure of ⁸¹₃₁Ga₅₀ and ⁸³₃₂Ge₅₁ can easily be explained within the natural hypothesis of a strong energy gap at N = 50 and a doubly-magic character for ⁷⁸Ni.

Publication:

Journal of Physics Conference Series

Pub Date:

October 2006

DOI:

10.1088/1742-6596/49/1/038

arXiv:

arXiv:nucl-ex/0610012

Bibcode:

2006JPhCS..49..170V

Keywords:

Nuclear Experiment

E-Print:

2 pages, pdf file, To be published in the Proceedings of "International Symposium on Structure of Exotic Nuclei and Nuclear Forces (SENUF 06)", March 2006, Tokyo, Japan

NASA/ADS

Study of the N = 50 major shell effect close to 78Ni : First evidence of a weak coupling structure in 8332Ge51and three-proton configuration states in 8131Ga50

Abstract

Study of the N = 50 major shell effect close to 78Ni : First evidence of a weak coupling structure in ⁸³₃₂Ge₅₁and three-proton configuration states in ⁸¹₃₁Ga₅₀