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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >On the semiclassical approach in the theory of ion-diatomic exchange interaction: its application to charge exchange reactions
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On the semiclassical approach in the theory of ion-diatomic exchange interaction: its application to charge exchange reactions

机译：离子-离子交换相互作用理论中的半经典方法：在电荷交换反应中的应用

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摘要

An analytic study is presented of asymptotic properties of the three-center quasimolecular system A(2)((Za-1)+) + BZb+ consisting of a homonuclear diatomic molecule and a highly charged atomic ion. The potential of the one-electron exchange interaction of this system is calculated asymptotically correctly (for large distances R between interacting particles) in the framework of the non-perturbative semiclassical and the Landau-Herring approaches. The total and state-selective n- and l-resolved cross sections of the electron capture in H-2 + Arq+ (q = 6, 8, 14, 16) collisions in the energy region from 5.0 to 2 x 10(3) eV amu(-1) were calculated and compared with available experimental and theoretical data. It is shown that with increasing projectile (atomic ion Arq+) charge, use of the semiclassical expression describing such an electron exchange interaction provides noticeably better (than with use of the Landau -Herring one) agreement between the calculated cross sections and experimental data.
机译：分析研究提出了由同核双原子分子和高电荷原子离子组成的三中心准分子系统A（2）（（Za-1）+）+ BZb +的渐近性质。在非扰动半经典方法和Landau-Herring方法的框架下，正确地渐近正确地（对于相互作用的粒子之间的大距离R）渐近计算了该系统的单电子交换相互作用的电势。 H-2 + Arq +（q = 6、8、14、16）碰撞的电子俘获在5.0至2 x 10（3）eV的能量区域中的总和状态选择性的n和l分辨截面计算amu（-1）并将其与可用的实验和理论数据进行比较。结果表明，随着弹丸（原子离子Arq +）电荷的增加，描述这种电子交换相互作用的半经典表达式的使用在计算的截面和实验数据之间提供了明显更好的（比使用Landau -Herring one更好）的一致性。

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