Correlated tunneling in high-order above threshold dissociative ionization of H2

IF 6.4 1区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Science China Physics, Mechanics & Astronomy Pub Date : 2024-10-29 DOI:10.1007/s11433-024-2513-3

Xiaolei Hao, Junping Wang, Zhaohan Zhang, Jiarui Qin, Zheng Shu, Chan Li, Jingyu Zhang, Weidong Li, Feng He, Jing Chen

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引用次数: 0

Abstract

Comprehension of photon-triggered molecular processes is essential in the study of various important topics in physics, chemistry, and biology. Here we propose a correlated tunneling picture to understand the dissociative ionization process of molecules in intense laser fields based on a quantum model developed in the framework of many-body S-matrix theory including nuclear vibrational motion. In this quantum correlation picture, the single ionization of H₂ and the subsequent electron-ion recollision-induced dissociation are considered as an entangled correlated process. It enables us to attribute the interference pattern in the joint-energy spectra to combined effects of single-slit diffraction and multi-slit interference of correlated electron-nuclear wave packets in the time domain. Our work opens a new avenue to understanding molecular dissociative ionization processes in external fields.

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H2 超阈值高阶离解电离中的相关隧道作用

理解光子触发的分子过程对于研究物理学、化学和生物学中的各种重要课题至关重要。在此，我们基于多体 S 矩阵理论（包括核振动运动）框架下建立的量子模型，提出了一种相关隧道图，以理解分子在强激光场中的离解电离过程。在这个量子关联图中，H2 的单次电离和随后的电子-离子再碰撞引起的解离被视为一个纠缠关联过程。这使我们能够将联合能谱中的干涉模式归因于时域中相关电子-核波包的单缝衍射和多缝干涉的综合效应。我们的工作为理解外部场中的分子离解电离过程开辟了一条新途径。

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来源期刊

Science China Physics, Mechanics & Astronomy PHYSICS, MULTIDISCIPLINARY-

CiteScore

10.30

自引率

6.20%

发文量

4047

审稿时长

3 months

期刊介绍： Science China Physics, Mechanics & Astronomy, an academic journal cosponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China, and published by Science China Press, is committed to publishing high-quality, original results in both basic and applied research. Science China Physics, Mechanics & Astronomy, is published in both print and electronic forms. It is indexed by Science Citation Index. Categories of articles: Reviews summarize representative results and achievements in a particular topic or an area, comment on the current state of research, and advise on the research directions. The author’s own opinion and related discussion is requested. Research papers report on important original results in all areas of physics, mechanics and astronomy. Brief reports present short reports in a timely manner of the latest important results.