Measurements of absolute electron capture cross sections in He2+–He and Ne8+–O2, N2, CH4 collisions

Ma, Pu-Fang; Wang, Jia-Rong; Zhang, Zi-Xiao; Meng, Tian-Ming; Xia, Zi-Han; Ren, Bai-Hui; Wei, Long; Yao, Ke; Xiao, Jun; Zou, Ya-Ming; Tu, Bing-Sheng; Wei, Bao-Ren

doi:10.1007/s41365-023-01309-w

NUCL SCI TECH

2023

DOI: 10.1007/s41365-023-01309-w

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Measurements of absolute electron capture cross sections in He2+–He and Ne8+–O2, N2, CH4 collisions

Pu-Fang Ma,

Jia-Rong Wang,

Zi-Xiao Zhang

et al.

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A high resolution reaction microscope with universal two-region time-focusing method

Gao,

Cao,

Lin

et al. 2024

Review of Scientific Instruments

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This paper presents a novel reaction microscope designed for ion–atom collision investigations, established at the Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China. Its time-of-flight (TOF) spectrometer employs an innovative flight-time focusing method consisting of two acceleration regions, providing optimal time focusing conditions for charged fragments with diverse initial velocities. The TOF spectrometer’s axis intentionally tilts by 12° relative to the ion beam direction, preventing potential obstructions from the TOF grid electrodes. The introduced focusing method allows for a flexible time-focusing TOF spectrometer design without restricting the length ratio of the two regions. In addition, this configuration in our case significantly suppresses noise on the recoil ion detector produced by residual gas in the ion beam trajectory, which is a considerable challenge in longitudinal spectrometers. In a test experiment on the single electron capture reaction involving 62.5 keV/u He2+ ions and a helium atomic beam, the recoil longitudinal momentum resolution achieved 0.068 atomic units. This novel configuration and successful test run show excellent precision for ion–atom collision studies.

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A high resolution reaction microscope with universal two-region time-focusing method

Gao,

Cao,

Lin

et al. 2024

Review of Scientific Instruments

View full text Add to dashboard Cite

show abstract

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Measurements of absolute electron capture cross sections in He2+–He and Ne8+–O2, N2, CH4 collisions

Cited by 1 publication

References 49 publications

A high resolution reaction microscope with universal two-region time-focusing method

A high resolution reaction microscope with universal two-region time-focusing method

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