Refine your search:     
Report No.
Search Results: Records 1-2 displayed on this page of 2
  • 1

Presentation/Publication Type

Initialising ...


Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...


Initialising ...


Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

Journal Articles

Plasma wakefield acceleration for ultrahigh-energy cosmic rays

Chen, P.*; Tajima, Toshiki; Takahashi, Yoshiyuki*

Physical Review Letters, 89(16), p.161101_1 - 161101_4, 2002/10

 Times Cited Count:91 Percentile:92.03(Physics, Multidisciplinary)

A cosmic acceleration mechanism is introduced which is based on the wakefields excited by the Alfven shocks in a relativistically flowing plasma,where the energy gain per distance of a test particle is Lorentz invariant. We 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: 1/E$$^{2}$$. The environment suitable for such plasma wakefield acceleration can be cosmically abundant. As an example, we discuss the possible production of super-GZK ultra high energy cosmic rays ( UHECR ) through this mechanism in the atmosphere of gamma ray bursts. We show that the acceleration gradient can be as high as 10$$^{16}$$eV/cm. The estimated event rate in our model agrees with that from UHECR observations.

JAEA Reports

Intercomparison of measuring and evaluation methods for environmental radiations

Saito, Kimiaki; Nagaoka, Toshi; Sakamoto, Ryuichi; Tsutsumi, Masahiro; Moriuchi, Shigeru; *

JAERI-M 90-188, 40 Pages, 1990/11


no abstracts in English

2 (Records 1-2 displayed on this page)
  • 1