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초강력 레이저 과학 연구단
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Effect of the temporal laser pulse asymmetry on pair production processes during intense laser-electron scattering

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Title
Effect of the temporal laser pulse asymmetry on pair production processes during intense laser-electron scattering
Author(s)
Hojbota, CI; Hyung Taek Kim; Chul Min Kim; V B Pathak; Chang Hee Nam
Publication Date
2018-06
Journal
PLASMA PHYSICS AND CONTROLLED FUSION, v.60, no.6, pp.064004 -
Publisher
IOP PUBLISHING LTD
Abstract
We investigate the effects of laser pulse shape on strong-field quantum electrodynamics ( QED) processes during the collision between a relativistic electron beam and an intense laser pulse. The interplay between high-energy photon emission and two pair production processes, i.e. nonlinear Breit-Wheeler (BW) and Trident, was investigated using particle-in-cell simulations. We found that the temporal evolution of these two processes could be controlled by using laser pulses with different degrees of asymmetry. The temporal envelope of the laser pulse can significantly affect the number of pairs coming from the Trident process, while the nonlinear BW process is less sensitive to it. This study shows that the two QED processes can be examined with state-of-the-art petawatt lasers and the discrimination of the two pair creation processes is feasible by adjusting the temporal asymmetry of the colliding laser pulse © 2018 IOP Publishing Ltd
URI
https://pr.ibs.re.kr/handle/8788114/4970
ISSN
0741-3335
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > Journal Papers (저널논문)
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