Thermal effects in plasma-based accelerators

Journal Article · Mon Jan 08 23:00:00 EST 2007 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2714022· OSTI ID:927386

Esarey, E; Schroeder, C B; Michel, E; Shadwick, B A; Geddes, C G.R.; Leemans, W P

Finite plasma temperature can modify the structure of thewake field, reduce the wave-breaking field, and lead to self-trappedelectrons, which can degrade the electron bunch quality in a plasma-basedaccelerator. A relativistic warm fluid theory is used to describe theplasma temperature evolution and alterations to the structure of anonlinear periodic wave exited in a warm plasma. The trapping thresholdfor a plasma electron and the fraction of electrons trapped from athermal distribution are examined using a single-particle model.Numerical artifacts in particle-in-cell models that can mimic the physicsassociated with finite momentum spread are discussed.

• Research Organization: Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE Director. Office of Science. High EnergyPhysics
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 927386
• Report Number(s): LBNL--63071; BnR: KA1501020
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 5 Vol. 14
• Country of Publication: United States
• Language: English

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