Cosmic plasma wakefield acceleration

被引：0
|
作者：
Chen, PS [1 ]
Tajima, T [1 ]
Takahashi, Y [1 ]
机构：
[1] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA
来源：
QUANTUM ASPECTS OF BEAM PHYSICS | 2004年
关键词：
D O I：
10.1142/9789812702333_0039
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Recently we proposed a new cosmic acceleration mechanism(1) which was based on the wakefields excited by the Alfven shocks in a relativistically flowing 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(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.
引用
收藏
页码：384 / 396
页数：13
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