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Farinella, D. M.*; Lau, C. K.*; Zhang, X. M.*; Koga, J. K.; Taimourzadeh, S.*; Hwang, Y.*; Abazajian, K.*; Canac, N.*; 戎崎 俊一*; Taborek, P.*; et al.
Physics of Plasmas, 23(7), p.073107_1 - 073107_10, 2016/07
被引用回数：4 パーセンタイル：20.21(Physics, Fluids & Plasmas)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 
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) in scalings of the frequency and intensity of the driver, as well as the plasma density.
Farinella, D.*; Zhang, X.*; Lau, C.*; Taimourzadeh, S.*; Hwang, Y.*; Koga, J. K.; 戎崎 俊一*; 田島 俊樹*
no journal, ,
Episodic eruptions of accretion disks of AGNs (and Blazars) due to the Magneto-Rotational-Instability are related to the excitation of intense Alfv
n waves and their subsequently mode converted EM pulses. These intense pulses are related to the emission of bursts of rays and extreme high energy cosmic ray (EHECR) genesis in AGN and Blazars. Wakefield acceleration and pondermotive acceleration of electrons give rise to ray emissions of the above through synchrotron radiation which can undergo inverse-Compton scattering to attain high X-ray energies. We study additional emissions of rays by the betatron oscillations and QED radiative processes in the intense accelerating fields.
