Signature of Collective Plasma Effects in Beam-Driven QED Cascades

Kenan Qu, Sebastian Meuren, Nathaniel J. Fisch

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


QED cascades play an important role in extreme astrophysical environments like magnetars. They can also be produced by passing a relativistic electron beam through an intense laser field. Signatures of collective pair plasma effects in these QED cascades are shown to appear, in exquisite detail, through plasma-induced frequency upshifts in the laser spectrum. Remarkably, these signatures can be detected even in small plasma volumes moving at relativistic speeds. Strong-field quantum and collective pair plasma effects can thus be explored with existing technology, provided that ultradense electron beams are colocated with multipetawatt lasers.

Original languageEnglish (US)
Article number095001
JournalPhysical review letters
Issue number9
StatePublished - Aug 27 2021

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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