Phase effect on and symmetry of pair production in inhomogeneous electric fields with chirping

被引：3

作者：

Mohamedsedik, Melike ^{[1
,2
,3
]}

Li, Lie-Juan ^{[1
,2
]}

Wang, Li ^{[4
]}

Amat, Orkash ^{[1
,2
]}

Hu, Li-Na ^{[1
,2
]}

Xie, B. S. ^{[1
,2
,4
]}

机构：

[1] Beijing Normal Univ, Key Lab Beam Technol, Minist Educ, Beijing 100875, Peoples R China

[2] Beijing Normal Univ, Coll Nucl Sci & Technol, Beijing 100875, Peoples R China

[3] Coll Xinjiang Uyghur Med, Hotan 848000, Peoples R China

[4] Beijing Acad Sci & Technol, Inst Radiat Technol, Beijing 100875, Peoples R China

来源：

EUROPEAN PHYSICAL JOURNAL PLUS | 2023年 / 138卷 / 04期

基金：

中国国家自然科学基金;

关键词：

VACUUM;

D O I：

10.1140/epjp/s13360-023-03926-1

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effect of the carrier envelope phase on electron-positron pair production is studied in a spatially inhomogeneous electric field with symmetrical frequency chirp. In both high- and low-frequency fields, we find periodic variations in the momentum spectrum and in the reduced particle number induced by the phase. In particular, the changes are more sensitive in the case of a low-frequency field. Under certain conditions, the reduced particle number can increase by over one order of magnitude, induced by the phase. Some different types of symmetries for two correlated phases and an interesting individual self-symmetry are revealed in the momentum spectrum. The combined roles of phase and chirping in the periodic and symmetrical behaviour of the momentum spectrum and the reduced particle number provide a more flexible parameter choice to control and optimise the pair production.

引用

页数：13

共 53 条

[41] Dynamically assisted pair production for various polarizations [J].