P-^(13)C弹性散射动量空间库仑作用的处理

TREATMENT OF COULOMB INTERACTION IN MOMENTUM SPACE FOR P—(13)~C ELASTIC SCATTERING

将 Ｃ． Ｍ. Ｖｉｎｃｅｎｔ和 Ｓ． Ｃ． Ｐｈａｔａｋ， 以及Ｒ． Ｃｒｅｓｐｏ和Ｊ． Ａ．Ｔｏｓｔｅｖｉｎ 分别提出的两种不同的方案，推广应用于自放１／２ １／２的散射，研究了Ｐ—(１３)~Ｃ弹 性散射动量空间库仑作用的处理．计算了入射质子能量为５００ＭｅＶ的微分散射 截面，分析本领和自旋－转动－退极化等观测量．两种方案的结果相比较表明， Ｒ—Ｊ方案在散射角较大处比 Ｖ—Ｐ方案有较好的修正效果；两种方案均显示库 仑作用所产生的影响是小的．

Applying two methods proposed by R. Crespo and J. A. Tostevin and by C. M. Vincent and S. C. Phatak to P-(13)~C elastic scattering, we study the treatment of coulomb interaction of momentum space. The differential cross sections, analyzing power, and spin-rotationdepolarization observables at 500MeV are calculated. The results from two methods are compared with experimental data. It shows that the applicable range of momentum transfer in R-J method is wider than those in V-P method. Both show that coulomb effect have little impact on the results of calculation.