Phase space dynamics after the breaking of a relativistic Langmuir wave in a thermal plasma

Year: 2014

Authors: Grassi A., Fedeli L., Macchi A., Bulanov S. V., Pegoraro F.

Autors Affiliation: Univ Pisa, Dept Phys Enrico Fermi, I-56127 Pisa, Italy; CNR, CNR, INO, Natl Inst Opt, I-56127 Pisa, Italy; Japan Atom Energy Agcy, QuBS, Kyoto 6190215, Japan.

Abstract: The relativistic Vlasov equation is integrated numerically in an Eulerian framework in order to investigate the phase space development of the wavebreak of a relativistic Langmuir wave in a thermal plasma. Relativistic kinematic and beam loading effects lead to a differential retardation in the time required by the electrons to evolve in phase space, the largest momentum electrons taking the longest time. This leads to the formation of a long lasting spike in momentum space at the wavebreak position that propagates with a velocity close to the speed of light and to an extremely steep density change in coordinate space.

Journal/Review: EUROPEAN PHYSICAL JOURNAL D

Volume: 68 (6)      Pages from: 178-1  to: 178-8

KeyWords: Vlasov equation; Vlasov-Maxwell simulation; wavebreaking; electron wakefield acceleration; laser-plasma interactions
DOI: 10.1140/epjd/e2014-50153-0

Citations: 9
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