Spreading of the Gamow-Teller Resonance in {sup 90}Nb and {sup 208}Bi
Spreading of the Gamow-Teller Resonance in {sup 90}Nb and {sup 208}Bi
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{sup 90}Nb 和 {sup 208}Bi 中伽莫夫泰勒共振的传播
DOI：
10.1103/physrevlett.79.1638
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发表时间：
1997
影响因子：
8.6
通讯作者：
S. Yamaji
中科院分区：
文献类型：
--
作者：
N. D. Dang;A. Arima;Toshio Suzuki;S. Yamaji
研究了{sup 90}Nb和{sup 208}Bi中Gamow-Teller共振的扩散特性，其中包括2p2h组态混合和超出随机相位近似的基态相关。数值计算中使用了标准谐振子势内的M3Y相互作用和单粒子波函数。费米表面周围的单粒子能量被经验值或由伍兹-撒克逊势给出的能量所取代。所得结果为最近的实验结果提供了合理的解释。还提供了目前方法对热核的推广。{版权所有}{ital 1997} {ital美国物理学会}
Spreading properties of the Gamow-Teller resonance in {sup 90 }Nb and {sup 208}Bi are studied within an approach including the 2p2h configuration mixing and the ground-state correlations beyond the random-phase approximation. The M3Y interaction and single-particle wave functions within the standard harmonic oscillator potential are used in numerical calculations. The single-particle energies around the Fermi surface are replaced with the empirical values or those given by a Woods-Saxon potential. Results obtained provide a reasonable account for recent experimental findings. The extension of the present approach to hot nuclei is also provided. {copyright} {ital 1997} {ital The American Physical Society}