Depletion of Intense Fields

Seipt, D. and Heinzl, T. and Marklund, M. and Bulanov, Stepan S. (2017) Depletion of Intense Fields. Physical review letters, 118. ISSN 1079-7114

[img]
Preview
PDF (PhysRevLett.118.154803)
PhysRevLett.118.154803.pdf - Published Version
Available under License None.

Download (471kB)

Abstract

The interaction of charged particles and photons with intense electromagnetic fields gives rise to multi-photon Compton and Breit-Wheeler processes. These are usually described in the framework of the external field approximation, where the electromagnetic field is assumed to have infinite energy. However, the multi-photon nature of these processes implies the absorption of a significant number of photons, which scales as the external field amplitude cubed. As a result, the interaction of a highly charged electron bunch with an intense laser pulse can lead to significant depletion of the laser pulse energy, thus rendering the external field approximation invalid. We provide relevant estimates for this depletion and find it to become important in the interaction between fields of amplitude $a_0 \sim 10^3$ and electron bunches with charges of the order of 10 nC.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
125199
Deposited By:
Deposited On:
18 May 2018 11:02
Refereed?:
Yes
Published?:
Published
Last Modified:
30 Sep 2020 07:48