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通过 femtosecond激光场追踪和控制酸分子的离合性电离

Pengzhao Wang¹, Shuqi Li¹, Xueying Li¹

¹State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China.

The Journal of chemical physics

|February 13, 2025

概括

研究人员使用femtosecond激光脉冲控制了酸分子解离. 他们确定了两个形成路径和操纵的离子发射,提供了对分子碎片化动态的见解.

科学领域:

物理化学物理化学
分子物理学分子物理学
激光科学激光科学

背景情况:

酸 (CH2O2) 是一种基本分子,对大气和星际化学有重大影响.
在强烈的激光场下了解分子碎片化动态对于控制分子级化学反应至关重要.

研究的目的:

实验性地研究和控制酸分子的离合性电离.
阐明离子产品的碎片化路径和空间辐射特性.

主要方法:

利用强烈的femtosecond激光脉冲进行分子激发.
测量离子产物 (甲基和基) 的巧合.
分析动能释放光谱作为探头时间延迟的函数.
采用时空形状的双色激光场来操纵离子辐射.

主要成果:

对酸的两种不同的离合电离路的鉴定.
证明控制甲基和基基的空间排放模式.
激光场参数 (相对相位) 与离子碎片排放特征之间的相关性.

结论:

五秒激光脉冲可以用来选择性地控制酸的离散电离.
该研究提供了对酸碎片化动态的详细了解.
这些发现为使用定制激光场对分子反应进行先进控制铺平了道路.

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