Three-Body Recombination Between Helium and Silver Atoms at Cold Collision Energies

IF 1.7 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Few-Body Systems Pub Date : 2024-01-06 DOI:10.1007/s00601-023-01875-0

Hiroya Suno

引用次数: 0

Abstract

Cold three-body recombination between helium and silver atoms is studied using hyperspherical coordinates. The three-body Schrodinger equation, represented in the slow variable discretization approach at short distances and in the adiabatic method at large distances and using the potential-energy surface represented as the addition of realistic He-He and He-Ag pair interaction potentials, is solved using the R-matrix propagation method, in order to numerically calculate the three-body recombination rates for the He+He+Ag\(\rightarrow \)He\(_2\)+Ag and He+He+Ag\(\rightarrow \)HeAg+He processes. Not only zero-angular momentum \(J=0\) states but also \(J>0\) states are considered in the calculations, allowing for treating the recombination processes at collision energies beyond the threshold regime. The results of our calculations will be presented and discussed.

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冷碰撞能量下氦原子和银原子的三体重组

利用超球面坐标研究了氦原子和银原子之间的冷三体重组。三体薛定谔方程在短距离时用慢变量离散法表示，在大距离时用绝热法表示，并使用势能面表示为现实的氦-氦和氦-银对相互作用势能的叠加、使用 R 矩阵传播方法求解，以数值计算 He+He+Ag （右箭头）He（_2）+Ag 和 He+He+Ag （右箭头）HeAg+He 过程的三体重组率。计算中不仅考虑了零角动量（J=0）态，而且还考虑了（J>0）态，从而可以处理碰撞能量超过阈值时的重组过程。我们将展示和讨论计算结果。

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

Few-Body Systems 物理-物理：综合

CiteScore

2.90

自引率

18.80%

发文量

审稿时长

6-12 weeks

期刊介绍： The journal Few-Body Systems presents original research work – experimental, theoretical and computational – investigating the behavior of any classical or quantum system consisting of a small number of well-defined constituent structures. The focus is on the research methods, properties, and results characteristic of few-body systems. Examples of few-body systems range from few-quark states, light nuclear and hadronic systems; few-electron atomic systems and small molecules; and specific systems in condensed matter and surface physics (such as quantum dots and highly correlated trapped systems), up to and including large-scale celestial structures. Systems for which an equivalent one-body description is available or can be designed, and large systems for which specific many-body methods are needed are outside the scope of the journal. The journal is devoted to the publication of all aspects of few-body systems research and applications. While concentrating on few-body systems well-suited to rigorous solutions, the journal also encourages interdisciplinary contributions that foster common approaches and insights, introduce and benchmark the use of novel tools (e.g. machine learning) and develop relevant applications (e.g. few-body aspects in quantum technologies).