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Emission and level population in noble gases and their binary mixtures under ion beam excitation
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms ( IF 1.3 ) Pub Date : 2020-09-20 , DOI: 10.1016/j.nimb.2020.09.004
Mendykhan Khasenov

The luminescence spectra for noble gases and their binary mixtures excited by Ar ions with energies up to 70 MeV were examined in the range of 200–980 nm. The emissions at the transitions of heteronuclear ionic molecules ArXe+, ArKr+, KrXe+ were studied for a gas-mixture, with a wide variation in the percentage composition. The noble gases atomic spectra are dominated by lines of (n + 1)p-(n + 1)s-transitions (2p-1s in Pashen’s notation); lines of d-(n + 1)p-transitions were also observed. The distribution of radiation over 2p-levels of noble gas atoms was also measured. The sharp predominance of the fraction of radiation from the levels 2p2 of Ar, 2p6 of Kr and 2p5 of Xe is partially explained by the relatively small values of the rate constants for the deactivation of these levels, by own atoms. The mechanisms of levels population under the excitation of noble gases by ionizing radiation are discussed.



中文翻译:

离子束激发下稀有气体及其二元混合物的发射和能级填充

在200–980 nm的范围内检查了惰性气体及其被Ar离子激发的,能量高达70 MeV的二元混合物的发光光谱。在异核离子型分子ArXe的过渡排放+,ArKr +,KrXe +进行了研究用于气体混合物,在百分比组成变化很大。稀有气体的原子光谱由(n + 1)p-(n +1)s-跃迁线(以Pashen表示法为2p-1s)支配;还观察到了d-(n + 1)p-过渡的线。还测量了2p级惰性气体原子上的辐射分布。辐射从水平部分的尖锐优势2P 2的Ar,2P 6氪和2P 5Xe的值的部分解释是由于它们自己的原子使这些能级失活的速率常数的值相对较小。讨论了电离辐射激发稀有气体激发下能级填充的机理。

更新日期:2020-09-20
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