Электронный каталог

Статья

Li, R.
Simultaneous Impacts of Nuclear Shell Structure and Collectivity on *b Decay: Evidence from *8*0Ga&sub(49) / R.Li, Yu.G.Sobolev, S.Stukalov, [a.o.]. – Text : electronic // Physical Review C. – 2025. – Vol. 111, No. 3. – P. P. 034303. – URL: https://doi.org/10.1103/PhysRevC.111.034303.

The Gamow-Teller strength distribution covering the entire 𝛽-decay window, up to 10.312(4) MeV, of &sup(80⁢𝑔+𝑚)Ga was measured for the first time in photofission of UC&sub(𝑥) induced by a 50 MeV electron beam. The new data show significant enhancement in the high-energy region with a jump structure. Simultaneously, the 𝛾 deexciting behavior of 𝛽-populated states presents a competition between deexcitation to 2*+&sub(1⁢) [𝛽&sub(2)=0.155⁢(9)] and to 2*+&sub(2)⁢[𝛽&sub(2)=0.053&sup(0.008)&sub(0.009))] in *8*0 Ge . To understand these data, we performed a realistic shell-model calculation and systematic analysis of log⁡ 𝑓⁡𝑡 ratios between precursors' 𝛽 decay to 2*+&sub(2) and to 2*+&sub(1) of Ga isotopes. We conclude that these phenomena evidence simultaneous impacts of nuclear shell structure and collectivity on 𝐵(GT) distribution and therefore the half-life of the precursor.



ОИЯИ = ОИЯИ (JINR)2025
Спец.(статьи,препринты) = С 341.1б1 - Схема распада и спектры
Бюллетени = 18/025