Proton-hole states in the N=30 neutron-rich isotope K-49
Proton-hole states in the N=30 neutron-rich isotope K-49
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N=30 富中子同位素 K-49 中的质子空穴态
DOI：
10.1103/physrevc.82.034319
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发表时间：
2010
影响因子：
3.1
通讯作者：
S. Zhu
中科院分区：
文献类型：
--
作者：
R. Broda;J. Wrzesinski;A. Gadea;N. Mărginean;B. Fornal;L. Corradi;A. Stefanini;W. Królas;T. Pawłat;B. Szpak;S. Lunardi;J. Valiente;D. Mengoni;E. Farnea;M. Carpenter;G. Angelis;F. D. Vedova;E. Fioretto;B. Guiot;R. Janssens;P. Mantica;P. Mason;G. Montagnoli;D. Napoli;R. Orlandi;I. Pokrovskiy;G. Pollarolo;E. Sahin;F. Scarlassara;R. Silvestri;S. Szilner;C. Ur;M. Trotta;S. Zhu
本文用薄靶多核子转移反应和PRISMA-GARMA谱仪结合γ射线厚靶符合数据研究了N=30丰中子同位素{sup 49}K的激发态。d{sub 3/2}质子-空穴态位于s{sub 1/2}基态之上92 keV，质子-粒子f{sub 7/2}态建议在2104 keV。另外三个能级被建立为涉及耦合到N=28壳层以上的两个中子中的2{sup +}。测量或估计的寿命，以加强所观察到的水平结构，这是令人满意的协议与壳模型计算的解释。
Excited states in the N=30 neutron-rich isotope {sup 49}K have been studied using multinucleon transfer reactions with thin targets and the PRISMA-CLARA spectrometer combined with thick-target {gamma}-coincidence data from Gammasphere. The d{sub 3/2} proton-hole state is located 92 keV above the s{sub 1/2} ground state, and the proton-particle f{sub 7/2} state is suggested at 2104 keV. Three other levels are established as involving the coupling to 2{sup +} of two neutrons above the N=28 shell. The measured or estimated lifetimes served to reinforce the interpretation of the observed level structure, which is found to be in satisfactory agreement with shell-model calculations.