Electron impact single and double ionization and dissociation: revisiting CF4 and CHF3 with an improved experimental method

IF 2.9 3区化学 Q3 CHEMISTRY, PHYSICAL

Physical Chemistry Chemical Physics Pub Date : 2025-04-14 DOI:10.1039/d5cp00746a

Mevlut Dogan, Wania Wolff, Deepthy Maria Mootheril, Thomas Pfeifer, Alexander Dorn

引用次数: 0

Abstract

The absolute total and partial ionization cross sections resulting from electron collisions with fluorinated molecules CF₄ and CHF₃ were obtained by recoil-ion momentum spectroscopy with full acceptance for energetic ionic fragments. For absolute normalization the relative-flow technique was applied. The cross sections for single and double ionization as well as for dissociation were measured for electron energies from 20 eV to 1 keV. The data are compared with previous experiments and model calculations. The dissociation channel-specific differences between CF₄ and CHF₃ are discussed. The present data are relevant for the evaluation of the electron interaction on these potent greenhouse gases with a high global warming potential in the Earth biosphere and in plasma and other industrial applications.

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电子冲击单、双电离解离：用改进的实验方法重述CF4和CHF3

电子与氟化分子CF4和CHF3碰撞产生的绝对总电离和部分电离截面通过完全接受高能离子碎片的反冲离子动量谱获得。对于绝对归一化，采用了相对流技术。在电子能量从20 eV到1 keV范围内测量了单电离和双电离以及离解的截面。将所得数据与以往的实验和模型计算结果进行了比较。讨论了CF4和CHF3的解离通道特异性差异。目前的数据对于评估地球生物圈、等离子体和其他工业应用中这些具有高全球变暖潜势的强效温室气体的电子相互作用是相关的。

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

Physical Chemistry Chemical Physics 化学-物理：原子、分子和化学物理

CiteScore

5.50

自引率

9.10%

发文量

2675

审稿时长

2.0 months

期刊介绍： Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.