Target dependence of post-collision effects in ionization by proton impact

Target dependence of post-collision effects in ionization by proton impact
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质子撞击电离中碰撞后效应的目标依赖性

DOI:
10.1088/1361-6455/ab1df5
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发表时间:
2019
期刊:
Molecular and Optical Physics
影响因子:
--
通讯作者:
Madison, D H
Madison, D H
中科院分区:
--
文献类型:
--
作者:
Silvus, A;Dhital, M;Bastola, S;Buxton, J;Klok, Z;Ali, E;Ciappina, M F;Boggs, B;Cikota, D;Madison, D H

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我们测量并计算了在大范围内固定弹丸能量损失与散射角的函数关系下,由75 keV质子撞击使Ne和Ar电离的双微分截面。与先前获得的较轻目标的数据一起,这使得系统地分析散射弹丸和出口通道中的连续电子之间的碰撞后效应作为目标电离势的函数成为可能。这些数据与这种效应随着电离势的增加而增强的情况是一致的。然而,二级效应,包括弹丸-剩余目标离子相互作用也起着重要作用。
We have measured and calculated double differential cross sections for ionization of Ne and Ar by 75 keV proton impact for a broad range of fixed projectile energy losses as a function of scattering angle. Along with data obtained previously for lighter targets this made possible a systematic analysis of post-collision effects between the scattered projectile and the continuum electron in the exit channel as a function of the target ionization potential. The data are consistent with an increasing strength of such effects with increasing ionization potential. However, second-order effects involving the projectile—residual target ion interaction also play an important role.
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