质子和α粒子与类氢离子碰撞中电子俘获截面的联合原子模型计算

ELECTRON CAPTURE CROSS SECTIONS BY PROTONS AND α PARTICLES FROM HYDROGENIC IONS CALCULATED BY USING UNITE-ATOM MODEL

本文用前文发展起来的“联合原子”(unitedatom)模型,选用两态正交基展开碰撞参数波函数,对H^+和α粒子与类氢离子He^+、Li^(2+)、Be^(3+)、B^(4+)、C、^(5+)、N^(6+)和O^(7+)碰撞中的电子俘获截面进行了计算,我们的理论俘获截面与其它理论结果进行了比较,为入射离子是质子时,我们的结果与Sturmian近似的结果很好地一致;当入射离子是α粒子时,现在的结果与CDW近似一致。我们还讨论了现在所得结果的俘获截面的张弛特性。

Our previous method developed by using a new united-atom model is app -lied to calculate electron capture cross sections by protons and α particles from hydrogenic ions He+, Li2+, Be3+, B4+, C5+, N6+ and O7+. Our theoretical capture cross sections are compared with other theoretical results. For proton projectiles, our results are in good agreement with data obtained by using Sturmian approximation; for α projectiles, our capture cross sections are in agreement with the CDW' s results. we also discuss the scaling law for our present capture cross sections.