Eur. Phys. J. D (2017) 71: 221
https://doi.org/10.1140/epjd/e2017-80218-3

Regular Article

Effective charge of intense laser pulses in plasmas^*

¹ IPFN, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
² Instituto de Física, Universidade de São Paulo, 05508-090 São Paulo, SP, Brazil
³ Instituto de Física, Universidade Federal Fluminense, BR-24210-340 Niteroi, RJ, Brazil

^a e-mail: titomend@ist.utl.pt

Received: 28 March 2017
Received in final form: 5 May 2017
Published online: 29 August 2017

Abstract

We explore the concept of effective charge of intense photon beams propagating in a plasma. We consider the relativistic and quantum regimes.