L shell x ray production in high-Z elements using 4-6 MeV/u fluorine ions

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:395

Article

Kumar, Sunil^1,2  Singh, Udai²  Oswal, M.³  Singh, G.¹  Singh, N.¹  Mehta, D.¹  Nandi, T.⁴  Lapicki, G.⁵ 

[1] Panjab Univ, Dept Phys, Chandigarh 160014, India

[2] Chitkara Univ, Dept Appl Sci, Kalu Jhanda 174103, Himachal Prades, India

[3] Dev Samaj Coll, Dept Phys, Sec 45 B, Chandigarh 160047, India

[4] Inter Univ Accelerator Ctr, New Delhi 110067, India

[5] East Carolina Univ, Dept Phys, Greenville, NC 27858 USA

关键词: L-shell x rays;    Heavy ions;    Ionization;    Multiple ionization;   

DOI  :  10.1016/j.nimb.2017.01.044

来源: Elsevier

【 摘 要 】

L shell line and total x ray production cross sections in Pt-78, (79)Ab, Pb-82, Bi-83, Th-90, and U-92 targets ionized by 4-6 MeV/u fluorine ions were measured. These cross sections are compared with available theories for L shell ionization using single- and multiple-hole fluorescence and the Coster-Kronig yields. The ECPSSR and the ECUSAR theories exhibit good agreement with the measured data, whereas, the FBA theory overestimates them by a factor of two. Although for the F ion charge states q = 6-8 the multiple-hole atomic parameters do not significantly differ from the single-hole values, after an account for the multiple-holes, our data are better in agreement with the ECUSAR than the ECPSSR theory. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

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