首页 | 本学科首页   官方微博 | 高级检索  
     检索      


The peculiarities of diffusion of the galactic cosmic rays at low energies
Authors:V N Fedorenko
Institution:(1) A.F. Ioffe Physical Technical Institute, Leningrad, USSR
Abstract:I give an interpretation of a result of Simpsonet al. (1988) on the variation with kinetic energyT i of the mean pathlengthX m (T i ) of the galactic cosmic rays (CGRs) in the range 0.1lapT i lap10.0 GeV nucl–1. I argue that the data onX m (T i ) may be interpreted in terms of a model of GCR diffusion on the one-dimensional Alfvén-wave turbulence, having a cutoff in the spectrum at frequencies sgrlapsgr h , where sgr h is the proton gyrofrequency. The cutoff results in changing of the character of variation of the GCR diffusion coefficientD(T i )simT a in the rangeT i Gt1 GeV nucl–1 towards some more complicated variation at 0.1lapT i lap1.0 GeV nucl–1 due to the peculiarities of the pitch-angle scattering at thetaap900.
Keywords:
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号