Calculation of Energy and Angular Distributions of Electrons Produced in Intermediate-Energy p + H2 Collisions

IF 1.7 Q3 PHYSICS, ATOMIC, MOLECULAR & CHEMICAL

Atoms Pub Date : 2023-08-14 DOI:10.3390/atoms11080112

C. Plowman, Kade H. Spicer, A. Kadyrov

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引用次数: 1

Abstract

We extend the two-centre wave-packet convergent close-coupling approach to doubly differential ionisation in proton collisions with H2 to intermediate projectile energies. The results for the doubly differential cross section at projectile energies from 48 to 200 keV are presented as a function of the energy and angle of emitted electrons. We consider a wide range of emission angles from 10 to 160∘, and compare our results to experimental data, where available. Excellent agreement between the presented results and the experimental data was found, especially for emission angles less than 130∘. For very large backward emission angles our calculations tended to slightly overestimate the experimental data when energetic electrons are ejected and the doubly differential cross section is very small. This discrepancy may be due to the large uncertainties in the experimental data in this region and the model target description. Overall, the present results show significant improvement upon currently available theoretical results and provide a consistently accurate description of this process across a wide range of incident energies.

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中能p+H2碰撞中电子能量和角分布的计算

我们将质子与H2碰撞中的双差分电离的双中心波包收敛紧密耦合方法扩展到中等射弹能量。在射弹能量为48至200keV时，双微分截面的结果作为发射电子的能量和角度的函数给出。我们考虑了从10到160∘的广泛发射角度，并在可用的情况下将我们的结果与实验数据进行比较。在所提出的结果和实验数据之间发现了极好的一致性，特别是对于小于130°的发射角。对于非常大的后向发射角，当高能电子被喷射并且双微分横截面非常小时，我们的计算往往略微高估了实验数据。这种差异可能是由于该区域的实验数据和模型目标描述存在较大的不确定性。总的来说，目前的结果显示出对目前可用的理论结果的显著改进，并在广泛的入射能量范围内提供了对该过程的一贯准确的描述。

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

Atoms Physics and Astronomy-Nuclear and High Energy Physics

CiteScore

2.70

自引率

22.20%

发文量

128

审稿时长

8 weeks

期刊介绍： Atoms (ISSN 2218-2004) is an international and cross-disciplinary scholarly journal of scientific studies related to all aspects of the atom. It publishes reviews, regular research papers, and communications; there is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental and/or methodical details must be provided for research articles. There are, in addition, unique features of this journal: -manuscripts regarding research proposals and research ideas will be particularly welcomed. -computed data, program listings, and files regarding the full details of the experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Scopes: -experimental and theoretical atomic, molecular, and nuclear physics, chemical physics -the study of atoms, molecules, nuclei and their interactions and constituents (protons, neutrons, and electrons) -quantum theory, applications and foundations -microparticles, clusters -exotic systems (muons, quarks, anti-matter) -atomic, molecular, and nuclear spectroscopy and collisions -nuclear energy (fusion and fission), radioactive decay -nuclear magnetic resonance (NMR) and electron spin resonance (ESR), hyperfine interactions -orbitals, valence and bonding behavior -atomic and molecular properties (energy levels, radiative properties, magnetic moments, collisional data) and photon interactions