1 College of Physical Science and Technology, Hebei University, Baoding 071002, China; 2 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; 3 State Key Laboratory of Heavy Ion Science and Technology, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; 4 University of Chinese Academy of Sciences, Beijing 100049, China
Abstract We study the fragmentation of NO (,3) molecular ions produced by collisions between 96 keV O ions and neutral nitric oxide (NO) molecules, using the cold target recoil ion momentum spectrometer (COLTRIMS). The kinetic energy release (KER) for various dissociation channels is obtained. For the channel NO, double-electron capture followed by autoionization of the projectile ions is the dominant process, which can be explained by the recapture of loosely bound electrons into highly excited states of the target. For NO trication, two dissociation channels, i.e., (a) N and (b) N, are observed, where channel (b) is the dominant channel. Moreover, for dissociation channels originating from the same parent molecular ion, the dissociation channel with a higher charge for the oxygen ion fragment exhibits a higher most probable KER, which is consistent with studies of CO fragmentation by Rajput et al. Additionally, it is observed that as capture stability increases, the average KER shifts to higher values.
Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2022YFA1602500), the National Natural Science Foundation of China (Grant Nos. 11934004, 12064040, and 11974358), and Strategic Key Research Program of the Chinese Academy of Sciences (Grant No. XDB34020000).
Corresponding Authors:
Xiaolong Zhu, Zhiliang Li
E-mail: zhuxiaolong@impcas.ac.cn;phd-lzl@hbu.edu.cn
Cite this article:
Zhixin Li(李志欣), Kaizhao Lin(林楷钊), Xiaolong Zhu(朱小龙), Zhiliang Li(李志亮), Hang Yuan(苑航), Yong Gao(高永), Dalong Guo(郭大龙), Dongmei Zhao(赵冬梅), Shaofeng Zhang(张少锋), and Xinwen Ma(马新文) Fragmentation dynamics of nitric oxide induced by low-energy heavy ions 2025 Chin. Phys. B 34 053401
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