Short-range interactions in the N(4S)H+ and N+ (3P)H(2S) collisions: Cross sections and nuclear stopping power

IF 1.4 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2025-02-18 DOI:10.1016/j.nimb.2025.165645

M. Buchowiecki

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引用次数: 0

Abstract

The interactions between N(

^{4}

S)H

^{+}

and the N

^{+}

(

^{3}

P)H(²S) were calculated using the multireference configuration interaction (MRCI) method within the MOLPRO software. This study extends the previous research to short-range distances, reaching

1 0^{- 3}

bohr.

The results enable an analysis of the extrapolation of the short-range limits of colliding atoms and ions with the

a exp (- b r) / r

functional form. It was observed that at the shortest distances, atoms and ions interact with a Coulomb type potential. The high energy integrated cross sections (ICS), transport cross sections and nuclear stopping power (NSP) cross sections were calculated and differences from values derived from extrapolated potentials are discussed. The comparison with the SRIM code is performed.

Additionally, the long-range behavior of the N(

^{4}

S)H

^{+}

interaction from the previous study was corrected and the effect of neglecting potential energy curves in calculations of NSP cross sections was examined.

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N(4S)H+和N+ (3P)H（2S）碰撞中的短程相互作用：截面和核停止力

利用MOLPRO软件中的多参考组态相互作用（MRCI）方法计算N(4S)H+和N+ (3P)H（2S）之间的相互作用。这项研究将以前的研究扩展到近距离，达到10−3玻尔。结果可以用aexp(−br)/r函数形式外推原子和离子碰撞的短程极限。观察到，在最短距离处，原子和离子以库仑型电位相互作用。计算了高能积分截面（ICS）、输运截面和核停止功率（NSP）截面，并讨论了与外推电位的差异。与SRIM代码进行比较。此外，修正了前人研究中N(4S)H+相互作用的远程行为，并检验了在计算NSP截面时忽略势能曲线的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms 物理-核科学技术

CiteScore

2.80

自引率

7.70%

发文量

231

审稿时长

1.9 months

期刊介绍： Section B of Nuclear Instruments and Methods in Physics Research covers all aspects of the interaction of energetic beams with atoms, molecules and aggregate forms of matter. This includes ion beam analysis and ion beam modification of materials as well as basic data of importance for these studies. Topics of general interest include: atomic collisions in solids, particle channelling, all aspects of collision cascades, the modification of materials by energetic beams, ion implantation, irradiation - induced changes in materials, the physics and chemistry of beam interactions and the analysis of materials by all forms of energetic radiation. Modification by ion, laser and electron beams for the study of electronic materials, metals, ceramics, insulators, polymers and other important and new materials systems are included. Related studies, such as the application of ion beam analysis to biological, archaeological and geological samples as well as applications to solve problems in planetary science are also welcome. Energetic beams of interest include atomic and molecular ions, neutrons, positrons and muons, plasmas directed at surfaces, electron and photon beams, including laser treated surfaces and studies of solids by photon radiation from rotating anodes, synchrotrons, etc. In addition, the interaction between various forms of radiation and radiation-induced deposition processes are relevant.