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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 |
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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.
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Received: 03 March 2022
Revised: 19 May 2022
Accepted manuscript online: 29 May 2022
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PACS:
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03.65.Sq
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(Semiclassical theories and applications)
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11.15.Kc
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(Classical and semiclassical techniques)
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12.20.Ds
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(Specific calculations)
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| Fund: 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). |
Corresponding Authors:
Bo-Song Xie, Feng-Shou Zhang
E-mail: bsxie@bnu.edu.cn;fszhang@bnu.edu.cn
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Cite this article:
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 2023 Chin. Phys. B 32 010301
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