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Cosmic Plasma Wakefield Acceleration.

DE2004826879

Publication Date	2004
Personal Author	Chen, P.; Tajima, T.; Takahashi, Y.
Page Count	18
Abstract	Recently we proposed a new cosmic acceleration mechanism which was based on the wakefields excited by the Alfven shocks in a relativistically owing plasma. In this paper we include some omitted details, and show that there exists a threshold condition for transparency below which the accelerating particle is collision-free and suffers little energy loss in the plasma medium. The stochastic encounters of the random accelerating-decelerating phases results in a power-law energy spectrum: f((epsilon)) (proportional to) 1/(epsilon)(sup 2). As an example, we discuss the possible production of super-GZK ultra high energy cosmic rays (UHECR) in the atmosphere of gamma ray bursts. The estimated event rate in our model agrees with that from UHECR observations.
Keywords	Cosmic plasma Acceleration Plasma Alfven waves Gamma ray bursts Cosmic photons
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Stanford Linear Accelerator Center, CA.; Department of Energy, Washington, DC.; Alabama Univ. in Huntsville. Dept. of Physics.; Japan Atomic Energy Research Inst., Kyoto.
Supplemental Notes	Prepared in cooperation with Alabama Univ. in Huntsville. Dept. of Physics. and Japan Atomic Energy Research Inst., Kyoto. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200510

Cosmic Plasma Wakefield Acceleration.

Cosmic Plasma Wakefield Acceleration.
DE2004826879

Publication Date	2004
Personal Author	Chen, P.; Tajima, T.; Takahashi, Y.
Page Count	18
Abstract	Recently we proposed a new cosmic acceleration mechanism which was based on the wakefields excited by the Alfven shocks in a relativistically owing plasma. In this paper we include some omitted details, and show that there exists a threshold condition for transparency below which the accelerating particle is collision-free and suffers little energy loss in the plasma medium. The stochastic encounters of the random accelerating-decelerating phases results in a power-law energy spectrum: f((epsilon)) (proportional to) 1/(epsilon)(sup 2). As an example, we discuss the possible production of super-GZK ultra high energy cosmic rays (UHECR) in the atmosphere of gamma ray bursts. The estimated event rate in our model agrees with that from UHECR observations.
Keywords	Cosmic plasma Acceleration Plasma Alfven waves Gamma ray bursts Cosmic photons
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Stanford Linear Accelerator Center, CA.; Department of Energy, Washington, DC.; Alabama Univ. in Huntsville. Dept. of Physics.; Japan Atomic Energy Research Inst., Kyoto.
Supplemental Notes	Prepared in cooperation with Alabama Univ. in Huntsville. Dept. of Physics. and Japan Atomic Energy Research Inst., Kyoto. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200510