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A coupled two-step plasma instability in PW laser plasma interactions

Abstract:
A possible new mechanism for anomalous ion heating in ultra-intense laser plasmas is considered here. This mechanism is based on the excitation of an electron two-stream instability that is driven by the fast electron beam and resonantly decays into ion-acoustic waves. These low frequency waves are then strongly damped by the ion collisions in the dense plasma. The model gives a simple explanation for the preferential heating of the bulk ion population observed in recent laser experiments in the petawatt (PW) regime. © 2005 IOP Publishing Ltd.

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Authors


Mendonça, JT More by this author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Atomic and Laser Physics
Bingham, R More by this author
Davies, JR More by this author
Journal:
Plasma Physics and Controlled Fusion
Volume:
47
Issue:
12 B
Pages:
B799-B805
Publication date:
2005-12-01
DOI:
EISSN:
1361-6587
ISSN:
0741-3335
URN:
uuid:7e3f5bd6-f92f-4020-9da6-ee5cd83fd45a
Source identifiers:
353778
Local pid:
pubs:353778
Language:
English

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