Kinematically boosted pairs from the nonlinear Breit-Wheeler process in small-angle laser collisions

被引：2

作者：

Chen, Pisin ^{[1
,2
,3
,4
]}

Labun, Lance ^{[1
,5
,6
]}

机构：

[1] Natl Taiwan Univ, Leung Ctr Cosmol & Particle Astrophys, Taipei 10617, Taiwan

[2] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan

[3] Natl Taiwan Univ, Grad Inst Astrophys, Taipei 10617, Taiwan

[4] Kavli Inst Particle Astrophys & Cosmol, SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA

[5] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA

[6] Tau Syst Inc, Austin, TX 78701 USA

来源：

PHYSICS OF PLASMAS | 2023年 / 30卷 / 08期

关键词：

ELECTROMAGNETIC-WAVE; IN-FIELD; SCATTERING; ELECTRON; VACUUM; PULSES; PHOTON;

D O I：

10.1063/5.0157495

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We discuss that a scheme of nonperturbative pair production by high energy photons ( ? ? m) in a strong external field is achievable at the next high intensity laser experiments. The pair momentum is boosted, and for ? ? 1.2 m, the pair yield is increased when the external field is formed by two laser pulses converging at a small angle. These characteristics are nonperturbative in origin and related to the presence of magnetic field in addition to electric field. By enhancing the signal over perturbative backgrounds, these features allow the employment of above-threshold photons ? > 2 m, which further increases the pair yield. We note the close relation of this photon-pair conversion mechanism to spontaneous pair creation, recommending it as an accessible stepping stone experiment using state-of-the-art or soon-to-be laser technology.

引用

页数：6

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