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Ionization and dissociation of CH_2I_2 and CH_2ICl in femtosecond intense

机译:飞秒强度下CH_2I_2和CH_2ICl的电离和解离

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摘要

lonization and dissociation processes of gas molecules, CH_2I_2 and CH_2ICl, in intense femtosecond field (1013-1015 W-cnT2), were investigated by flight time mass spectrometer, irradiated by 60 fs with 800 and 400 nm femtosecond laser. In the moderate intense field, CH_2I_2 and CH2ICI produced concerted elimination products, I_2 and ICl molecules, respectively. The multiple charged ions, I~(2+), generated in Coulomb explosion under intense femtosecond laser irradiation, split into three peaks in the flight time mass spectra, due to the initial kinetic energies released in the explosion. The C-I internuclear distances during Coulomb explosion and the kinetic energy released were estimated according to the flight time differences.
机译:用飞行时间质谱仪研究了飞秒强磁场(1013-1015 W-cnT2)中气体分子CH_2I_2和CH_2IC1的电离和离解过程,用800 nm和400 nm飞秒激光在60 fs下进行了辐照。在中等强度的磁场中,CH_2I_2和CH2ICI分别产生协同消除产物I_2和ICl分子。在飞秒激光的强烈照射下,在库仑爆炸中产生的多个带电离子I〜(2+),由于爆炸中释放的初始动能,在飞行时间质谱图中分为三个峰。根据飞行时间差估算库仑爆炸过程中的C-1核间距和释放的动能。

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