摘要: The total absolute cross sections of single- and double-electron capture (SEC and DEC) in the collisions of He2+ with He and Ne8+ with O2, N2, and CH4 were studied in the energy ranges 3.5 to 50 keV/u and 2.8 to 40 keV/u, respectively. Through a deep analysis of the experimental systematic uncertainties in the measurement procedure and data evaluation, the error in the experimental results of the SEC cross sections is less than 9%. Within the uncertainties, the present results of the He2+ -He collision show good consistency with previous measurements, validating the experimental system and paving the way for precise measurements of EC cross sections for a variety of ions and neutral gases. The present measurements allow for a test of EC theory and provide crucial EC cross section data for the establishment of plasma models in fusion research and astrophysical X-ray studies.
The aiticle has been accepted by Nuclear Science and Techiniques.
Ma, Pufang,Wang, Jiarong,Zhang, Zixiao,Meng, Tianming,Xia, Zihan,Ren, Baihui,Wei,Long,Yao, Ke,Xiao, Jun,Zou, Yaming,Tu, Bingsheng,Wei, baoren.(2023).Measurements of Absolute Electron Capture Cross Sections in He2+ -He and Ne8+ -O2, N2, CH4 Collisions.中国科学院科技论文预发布平台.doi:10.12074/202309.00149V1