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Updated: Oct 31, 2025

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在液态水中探测激光诱导的等离子体产生

Jiyu Xu¹, Daqiang Chen^1,2, Sheng Meng^1,2,3

¹Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.

Journal of the American Chemical Society

|July 1, 2021

概括

激光脉冲迅速加热和拉伸水分子,导致质子转移和等离子生成. 这项研究揭示了激光激发液体水的超快原子动态.

科学领域:

物理化学
化学物理
材料科学

背景情况:

了解激光与水之间的相互作用对于基础科学和应用至关重要.
由于复杂性,在光激发后跟踪超快的原子运动是具有挑战性的.

研究的目的:

在强烈的光刺激下探索液态水的五秒进化.
揭示离子和电子动态的微观细节以及能量传输途径.

主要方法:

采用了非抗击性的量子动力学模拟.
单独的离子和电子动态在原子水平上被明确监测.

主要成果:

液态水表现出由强场效应和电子激发驱动的两步加热过程.
激光脉冲导致分子拉伸,质子转移,解离和等离子生成.
由此产生的水等离子体具有自由质子,不平衡分布和金属电子状态.

结论:

强烈的激光照射会在液态水中产生复杂的超快速动态.
这项研究提供了前所未有的微观洞察力,

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