Ejection of triatomic hydrogen molecular ion from methanol in intense laser fields
Ejection of triatomic hydrogen molecular ion from methanol in intense laser fields
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DOI：
10.1016/j.cplett.2005.07.108
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发表时间：
2005-10-03
影响因子：
2.8
通讯作者：
Nakano, H
中科院分区：
文献类型：
--
作者：
Furukawa, Y;Hoshina, K;Nakano, H
基于质量分辨动量成像技术测量的碎片离子的动量矢量分布，研究了在强激光场（86飞秒，800纳米，约10²¹⁴瓦/平方厘米）中从甲醇（CH₃OH和CD₃OH）中喷射出三原子或双原子氢分子离子的情况。从CD₃OH₂⁺喷射出的D₃⁺、HD₂⁺、D₂⁺和HD⁺的相对产率以及它们动量矢量的各向异性分布，推导出三原子（H₃⁺和HD⁺）和双原子（D₂⁺和HD⁺）碎片离子的形成速率，分别为kₜ = 0.15皮秒⁻¹和kₔ = 0.31皮秒⁻¹，以及H/D交换速率kₑₓ = 0.13皮秒⁻¹。（c）2005爱思唯尔B.V.版权所有。
The ejection of a triatomic or diatomic hydrogen molecular ion from methanol (CH3OH and CD3OH) in intense laser fields (86 fs, 800 nm, approximate to 10(2)(14 W/cm)) is investigated based on the momentum vector distributions of the fragment ions measured by the mass-resolved momentum imaging technique. From the relative yield of D-3(+), HD2+, D-2(+) and HD+ ejected from CD3OH2+ and the anisotropic distributions of their momentum vectors, the rates of the formation of triatomic (13 and HD+) and diatomic (D-2(+) and HD+) fragment ions, k(t) = 0.15 ps(-1) and k(d) = 0.31 ps(-1), respectively, and the H/D exchange rate, k(ex) = 0. 13 ps(-1), are derived. (c) 2005 Elsevier B.V. All rights reserved.