Previous Article in Journal
A Program Library for Computing Pure Spin-Angular Coefficients for One- and Two-Particle Operators in Non-Relativistic Atomic Theory
Previous Article in Special Issue
Single-Electron Capture in Intermediate-Energy He+ + Ne Collisions
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Atoms
Volume 14
Issue 4
10.3390/atoms14040030
atoms-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Charge Exchange Studies with n-, l-, and spin-Quantum State Population in Ar7+-He Collisions

by
Yijiao Wu
,
Han Yin
,
Bingsheng Tu
*,
Tianming Meng
,
Pufang Ma
,
Xu Tan
,
Ke Yao
,
Jun Xiao
,
Yaming Zou
and
Baoren Wei
*
Key Laboratory of Nuclear Physics and Ion-Beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai 200433, China
*
Authors to whom correspondence should be addressed.
Atoms 2026, 14(4), 30; https://doi.org/10.3390/atoms14040030
Submission received: 12 February 2026 / Revised: 2 April 2026 / Accepted: 7 April 2026 / Published: 8 April 2026
(This article belongs to the Special Issue Electronic Dynamics in Atomic and Molecular Collisions)
Versions Notes

Abstract

The energy-dependent population of fine quantum states in single electron capture (SEC) reflects the intrinsic collision dynamics. Here we report experimental studies of Ar7+ ions colliding with He in the energy range of 1.05–17.5 keV/u. Owing to the high resolution of a recoil-ion momentum spectrometer, the n-, l-, and spin-state electron capture populations are well resolved, and a strong energy dependence of the SEC cross sections is observed. Most importantly, a clear inversion of the cross-section ratio between the spin-resolved triplet and singlet 3s3d configurations is found, demonstrating a breakdown of spin statistics. Together with recent spin-resolved studies of C3+-He collisions (PRL 133, 173002 (2024)), these results suggest that the breakdown of spin statistics is likely a general feature of charge exchange in open-shell highly charged ion systems.
Keywords: charge exchange; single electron capture; cross section; state selectivity charge exchange; single electron capture; cross section; state selectivity

Share and Cite

MDPI and ACS Style

Wu, Y.; Yin, H.; Tu, B.; Meng, T.; Ma, P.; Tan, X.; Yao, K.; Xiao, J.; Zou, Y.; Wei, B. Charge Exchange Studies with n-, l-, and spin-Quantum State Population in Ar7+-He Collisions. Atoms 2026, 14, 30. https://doi.org/10.3390/atoms14040030

AMA Style

Wu Y, Yin H, Tu B, Meng T, Ma P, Tan X, Yao K, Xiao J, Zou Y, Wei B. Charge Exchange Studies with n-, l-, and spin-Quantum State Population in Ar7+-He Collisions. Atoms. 2026; 14(4):30. https://doi.org/10.3390/atoms14040030

Chicago/Turabian Style

Wu, Yijiao, Han Yin, Bingsheng Tu, Tianming Meng, Pufang Ma, Xu Tan, Ke Yao, Jun Xiao, Yaming Zou, and Baoren Wei. 2026. "Charge Exchange Studies with n-, l-, and spin-Quantum State Population in Ar7+-He Collisions" Atoms 14, no. 4: 30. https://doi.org/10.3390/atoms14040030

APA Style

Wu, Y., Yin, H., Tu, B., Meng, T., Ma, P., Tan, X., Yao, K., Xiao, J., Zou, Y., & Wei, B. (2026). Charge Exchange Studies with n-, l-, and spin-Quantum State Population in Ar7+-He Collisions. Atoms, 14(4), 30. https://doi.org/10.3390/atoms14040030

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop