Neutron Skin Thickness of 90Zr Determined By Charge Exchange Reactions
Neutron Skin Thickness of 90Zr Determined By Charge Exchange Reactions
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DOI：
10.1103/physrevc.74.051303
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发表时间：
2006-09
影响因子：
3.1
通讯作者：
K. Yako;H. Sagawa;H. Sakai
中科院分区：
文献类型：
--
作者：
K. Yako;H. Sagawa;H. Sakai
用300 MeV的{sup 90}Zr（p，n）和{sup 90}Zr（n，p）反应研究了{sup 90}Zr的电荷交换自旋偶极（SD）激发.采用多极分解技术得到了截面谱中的SD强度分布。首次获得了与模型无关的SD求和规则值：148{+-}12 fm{sup 2}。由SD求和规则值确定{sup 90}Zr的中子皮厚度为0.07 ± 0.04 fm。
Charge exchange spin-dipole (SD) excitations of {sup 90}Zr are studied by the {sup 90}Zr(p,n) and {sup 90}Zr(n,p) reactions at 300 MeV. A multipole decomposition technique is employed to obtain the SD strength distributions in the cross-section spectra. For the first time, a model-independent SD sum rule value is obtained: 148{+-}12 fm{sup 2}. The neutron skin thickness of {sup 90}Zr is determined to be 0.07{+-}0.04 fm from the SD sum rule value.