SF6深核孔衰变中中性硫原子的形成

IF 9 1区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Physical review letters Pub Date : 2025-02-12 DOI:10.1103/physrevlett.134.063003

Oksana Travnikova, Florian Trinter, Marcus Agåker, Giorgio Visentin, Joakim Andersson, Ludvig Kjellsson, Iyas Ismail, Nicolas Velasquez, Dimitris Koulentianos, Manuel Harder, Zhong Yin, Johan Söderström, Tatiana Marchenko, Renaud Guillemin, O. Dennis McGinnis, Hans Ågren, Stephan Fritzsche, Marc Simon, Jan-Erik Rubensson, Joseph Nordgren

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引用次数: 0

摘要

利用同步辐射和多组态Dirac-Hartree-Fock计算发射能量和跃迁速率，利用硫l壳发射光谱研究了SF6在硫k壳激发或电离下的解离。衰变路径特别涉及一个或多个电子的俄歇发射，导致单带电或多带电的中间态。然而，研究结果表明，在2485 ~ 2489 eV激发后，在151 ~ 152 eV观测到的光子发射主要来自中性硫的跃迁。这清楚地表明，中心原子在离解过程中保留电子，所有氟原子在s2p衰变之前分离。2025年由美国物理学会出版

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Neutral Sulfur Atom Formation in Decay of Deep Core Holes in SF6

Dissociation upon sulfur K-shell excitation or ionization of SF6 is studied by sulfur L-shell emission spectroscopy using synchrotron radiation and multiconfiguration Dirac-Hartree-Fock calculations of emission energies and transition rates. The decay path involves in particular Auger emission with the ejection of one or more electrons, leading to singly or multiply charged intermediate states. Nevertheless, the results of the study show that the observed photon emission at 151–152 eV following excitation at 2485–2489 eV originates dominantly from transitions in neutral sulfur. This clearly indicates that the central atom retains its electrons in a dissociation process where all fluorine atoms detach before the S 2p decay.

Published by the American Physical Society

2025

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来源期刊

Physical review letters 物理-物理：综合

CiteScore

16.50

自引率

7.00%

发文量

2673

审稿时长

2.2 months

期刊介绍： Physical review letters(PRL)covers the full range of applied, fundamental, and interdisciplinary physics research topics: General physics, including statistical and quantum mechanics and quantum information Gravitation, astrophysics, and cosmology Elementary particles and fields Nuclear physics Atomic, molecular, and optical physics Nonlinear dynamics, fluid dynamics, and classical optics Plasma and beam physics Condensed matter and materials physics Polymers, soft matter, biological, climate and interdisciplinary physics, including networks