CO Dissociation Induced by 1 keV/u Ar2+ Ion

被引：0

作者：

Zhang, Chijun ^{[1
,2
]}

Zhang, Ruitian ^{[1
]}

Zhang, Shaofeng ^{[1
]}

Ma, Xinwen ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

ATOMS | 2024年 / 12卷 / 10期

关键词：

CO dissociation; electron capture; COLTRIMS; metastable states; autoionization; kinetic energy release; KINETIC-ENERGY RELEASE; RECOIL-ION; DOUBLE-PHOTOIONIZATION; MOMENTUM SPECTROSCOPY; FRAGMENTATION; DYNAMICS; MICROSCOPE;

D O I：

10.3390/atoms12100053

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

CO is one of the important molecules in dense molecular clouds, and its dissociation induced by cosmic ray heavy ions is a fundamental process for molecular breaking up and rearrangement in astronomical networks. Extensive laboratory simulations are required to understand molecular evolution in astrophysical contexts. Here, we investigate the CO dissociation induced by 1 keV/u Ar2+ using cold target recoil ion momentum spectroscopy. Kinetic energy release for double electron capture Ar2++CO -> Ar0+C++O+ and transfer ionization Ar2++CO -> Ar++C++O++e- was obtained. The dissociation mechanisms are attributed to different KER distributions. The autoionization process is identified below the CO2+ double ionization threshold.

引用

页数：8

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