~（120）Sn的低能电偶极子响应
Low-energy electric dipole response in 120Sn
摘要：
在E_p = 295 MeV质子非弹性散射实验中，提取了~（120）Sn的电偶极强度。在中子阈以下，它不同于~（120）Sn（γ，γ ′）实验的结果，在激发能为8.3 MeV处达到峰值。总强度对应于能量加权和规则的2.3（2）%，并且比用（γ，γ '）反应观察到的强度大三倍以上。这意味着一个强大的分裂的E1强度和/或小的基态分支比的激发1-状态。
英文摘要：
The electric dipole strength in 120Sn has been extracted from proton inelastic scattering experiments at E_p = 295 MeV and at forward angles including 0 degree. Below neutron threshoild it differs from the results of a 120Sn(gamma,gamma') experiment and peaks at an excitation energy of 8.3 MeV. The total strength corresponds to 2.3(2)% of the energy-weighted sum rule and is more than three times larger than what is observed with the (gamma,gamma') reaction. This implies a strong fragmentation of the E1 strength and/or small ground state branching ratios of the excited 1- states.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
