Enhancement of electron-positron pairs in combined potential wells with linear chirp frequency

doi:10.1088/1674-1056/ac744b

中国物理B ›› 2023, Vol. 32 ›› Issue (1): 10301-010301.doi: 10.1088/1674-1056/ac744b

Enhancement of electron-positron pairs in combined potential wells with linear chirp frequency

Li Wang(王莉)^1,2, Lie-Juan Li(李烈娟)², Melike Mohamedsedik(麦丽开·麦提斯迪克)², Rong An(安荣)^1,2, Jing-Jing Li(李静静)^1,2, Bo-Song Xie(谢柏松)^1,2,†, and Feng-Shou Zhang(张丰收)^1,2,‡

1 Institute of Radiation Technology, Beijing Academy of Science and Technology, Beijing 100875, China;
2 Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China

收稿日期:2022-03-03 修回日期:2022-05-19 接受日期:2022-05-29 出版日期:2022-12-08 发布日期:2022-12-20
通讯作者: Bo-Song Xie, Feng-Shou Zhang E-mail:bsxie@bnu.edu.cn;fszhang@bnu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11635003, 11025524, 11161130520, 11875007, and 12047513) and the Reform and Development Project of Beijing Academy of Science and Technology (Grant Nos. 13001-2110 and 13001-2114).

Enhancement of electron-positron pairs in combined potential wells with linear chirp frequency

1 Institute of Radiation Technology, Beijing Academy of Science and Technology, Beijing 100875, China;
2 Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China

Received:2022-03-03 Revised:2022-05-19 Accepted:2022-05-29 Online:2022-12-08 Published:2022-12-20
Contact: Bo-Song Xie, Feng-Shou Zhang E-mail:bsxie@bnu.edu.cn;fszhang@bnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11635003, 11025524, 11161130520, 11875007, and 12047513) and the Reform and Development Project of Beijing Academy of Science and Technology (Grant Nos. 13001-2110 and 13001-2114).

摘要/Abstract

摘要： Effect of linear chirp frequency on the process of electron-positron pairs production from vacuum is investigated by the computational quantum field theory. With appropriate chirp parameters, the number of electrons created under combined potential wells can be increased by two or three times. In the low frequency region, frequency modulation excites interference effect and multiphoton processes, which promotes the generation of electron-positron pairs. In the high frequency region, high frequency suppression inhibits the generation of electron-positron pairs. In addition, for a single potential well, the number of created electron-positron pairs can be enhanced by several orders of magnitude in the low frequency region.

关键词: electron-positron pairs, linear chirp frequency, the computational quantum field theory

Abstract: Effect of linear chirp frequency on the process of electron-positron pairs production from vacuum is investigated by the computational quantum field theory. With appropriate chirp parameters, the number of electrons created under combined potential wells can be increased by two or three times. In the low frequency region, frequency modulation excites interference effect and multiphoton processes, which promotes the generation of electron-positron pairs. In the high frequency region, high frequency suppression inhibits the generation of electron-positron pairs. In addition, for a single potential well, the number of created electron-positron pairs can be enhanced by several orders of magnitude in the low frequency region.

Key words: electron-positron pairs, linear chirp frequency, the computational quantum field theory

中图分类号: (Semiclassical theories and applications)

03.65.Sq

11.15.Kc (Classical and semiclassical techniques) 12.20.Ds (Specific calculations)

Li Wang(王莉), Lie-Juan Li(李烈娟), Melike Mohamedsedik(麦丽开·麦提斯迪克), Rong An(安荣), Jing-Jing Li(李静静), Bo-Song Xie(谢柏松), and Feng-Shou Zhang(张丰收). Enhancement of electron-positron pairs in combined potential wells with linear chirp frequency[J]. 中国物理B, 2023, 32(1): 10301-010301.

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Enhancement of electron-positron pairs in combined potential wells with linear chirp frequency

Enhancement of electron-positron pairs in combined potential wells with linear chirp frequency

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