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초강력 레이저 과학 연구단
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Influence of polarization on back-reflected e(-)e(+) pair jets from laser-electron collision

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Title
Influence of polarization on back-reflected e(-)e(+) pair jets from laser-electron collision
Author(s)
C I Hojbota; Hyung Taek Kim; V B Pathak; Chang Hee Nam
Publication Date
2020-02
Journal
PLASMA PHYSICS AND CONTROLLED FUSION, v.62, no.2, pp.024003 -
Publisher
IOP PUBLISHING LTD
Abstract
We investigate the effect of laser polarization on spatial and momentum distribution of back-reflected e(-)e(+) pairs from the collision of an intense laser pulse (I = 5 x 10(22) W cm(-2)) with a counter-propagating 5 GeV electron beam. During the pair production, a significant amount of particles (10(6)-10(7)) are ejected in the opposite direction of the incoming electron beam (back-reflected), they are trapped by and co-propagate with the laser beam, gaining energy up to the GeV level. From our multi-dimensional particle-in-cell studies, we observe that laser polarization affects the angular distribution of these particles: a linearly polarized pulse produces two transversely separated particle jets, while a circular one leads to the formation of a radially symmetric cone-shaped emission. The results presented here add insights for future experiments performed at multi-PW laser facilities. © 2019 IOP Publishing Ltd Printed in the UK
URI
https://pr.ibs.re.kr/handle/8788114/7011
ISSN
0741-3335
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > Journal Papers (저널논문)
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