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

Abstract

L shell line and total x-ray production cross sections in 78Pt, 79Au, 82Pb, 83Bi, 90Th, and 92U 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.

Experimental and theoretical L-shell ionization cross sections of heavy atoms by impact of Si ions

“…The L x-ray production cross sections for the most commonly resolved Lℓ, Lα, Lβ, Lη, and Lγx rays are related to the L i (i = 1,2,3)subshell ionization cross sections as given below [20] @, =…”

Measurement of L-shell X-ray production cross sections in 89Y, 158Gd and 209Bi due to 0.3 MeV/u – 1.0 MeV/u 12C ions

“…When the collision is symmetric (or close to symmetric), i.e. when, ≲ 1, the electron capture (EC) process becomes important as well (Kumar et al, 2017). The contribution of electron capture to total ionization by the projectile was also considered through ECPSSR + EC calculations using the ECRS08 code by Horvat (Horvat, 2009).…”

Understanding the mechanisms of L-shell x-ray emission from Os atoms bombarded by 4–6 MeV/u fluorine ion

“…The L x-ray production cross sections for the most commonly resolved L ℓ , Lα, Lβ, and Lγ x rays are related to the L i (i = 1, 2, 3) subshell ionization cross sections as given below [22] s s…”

“…The spectra were taken at different positions of each target. Details of the experimental setup and detection system are given by Kumar et al [22]. The ultra-thin target of 76 Os was prepared on the polypropylene backing using an ultra-high vacuum deposition setup at IUAC, New Delhi.…”