较低能区质子与核弹性散射相对论性的研究

RELATIVISTIC STUDY OF PROTON-NUCLEUS ELASTIC SCATTERING AT LOWER ENERGIES

在能量低于300MeV的能区中讨论了含有罗仑兹不变性的相对论性光学势.并用严格的分波方法求解含有标量势和矢量势的Dirac方程.对质子在300—65MeV能区中与^(40)Ca核作计算并与弹性散射微分截面(dσ)/(dΩ),分析本领A_y(θ)和自旋转动函数Q(θ)的实验结果比较.看到改进了的相对论性光学势与这些实验值符合甚好.

The Lorentz invariant relativistic optical potential have been discussed at energies below 300 MeV. The Dirac equation with scalar and vector potential is solved by exact partial wave method. The calculated results of proton-^(40)Ca at energy region 300—65 MeV are presented and compared with the experimental data of differential cross section dσ/dQ, analyzing power A_y (θ) and spin rotation function Q(θ). It is shown that the improved relativistic optical potential fits the data well.