用高能核子非弹性散射研究核力有效势

本文用扭曲波玻恩近似法及多体高能近似法,处理了原子核对高能核子的非弹性散射现象。在具有可靠的靶核激发态波函数的情况下,可利用这些理论处理方法研究核内两核子间的有效势,本文具体就碳核对185MeV入射核子的非弹性散射进行了计算。在计算中利用了粒子-空穴模型核波函数。在采用了具有各种交换性质并包含自旋轨道耦合项的有效势后,用一组合理的位阱参数,由多体高能近似法计算的理论值可与几个微分截面及极化实验曲线同时符合。

THE STUDY OF TWO-NUCLEON POTENTIAL IN NUCLEI BY MEANS OF INELASTIC SCATTERING

It is proposed that the effective two-nucleon potential in nuclei may be investigated through the direct reaction process in high energy nucleon inelastic scattering. Both DWBA and Glauber's manybody high energy approximation are used in treating the inelastic scattering problem. The effective potential between nucleons within the nucleus has been assumed to have various exchange properties and the spin-orbit term, in the derivation.The differential cross sections and polarization angular distribution for the inelastic scattering of 185 MeV nucleons by C¹² with excitation energies 9.6 and 22.3 MeV are calculated. Particle hole model wave functions are used for the nuclear states. All these experimental curves of differential cross section and polarization can be fitted very well with a reasonable set of potential parameters.