High energy photon emission from wakefields

D. M. Farinella, C. K. Lau, X. M. Zhang, J. K. Koga, S. Taimourzadeh, Y. Hwang, K. Abazajian, N. Canac, T. Ebisuzaki, P. Taborek, T. Tajima

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Abstract

Experimental evidence has accumulated to indicate that wakefield acceleration (WFA) accompanies intense and sometimes coherent emission of radiation such as from betatron radiation. The investigation of this issue has additional impetus nowadays because we are learning (1) there is an additional acceleration process of the ponderomotive acceleration; (2) WFA may become relevant in much higher density regimes; (3) WFA has been proposed as the mechanism for extreme high energy cosmic ray acceleration and gamma ray bursts for active galactic nuclei. These require us to closely examine the radiative mechanisms in WFA anew. We report studies of radiation from wakefield (self-injected betatron) and ponderomotive (laser field) mechanisms in scalings of the frequency and intensity of the driver, as well as the plasma density.

Original languageEnglish (US)
Article number073107
JournalPhysics of Plasmas
Volume23
Issue number7
DOIs
StatePublished - Jul 1 2016
Externally publishedYes

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    Farinella, D. M., Lau, C. K., Zhang, X. M., Koga, J. K., Taimourzadeh, S., Hwang, Y., Abazajian, K., Canac, N., Ebisuzaki, T., Taborek, P., & Tajima, T. (2016). High energy photon emission from wakefields. Physics of Plasmas, 23(7), [073107]. https://doi.org/10.1063/1.4956450