منابع مشابه
Cosmic-Ray Positive and Negative Electrons
A determination of the specific ionization of cosmic-ray particles, 6rst, by a count of the number of drops per cm along cosmic-ray tracks on cloud-chamber photographs and, second, by measurements of the energy loss in lead has shown that the great bulk of the cosmic-ray particles of positive charge are positive electrons. The primary ionization was found to be about 31 ion-pairs per cm in air ...
متن کاملCosmic - Ray Electrons and the Diffuse Gamma - Ray Spectrum
Short Title: Cosmic-ray electrons and diffuse gamma-ray spectrum 1 Abstract The bulk of the diffuse galactic gamma-ray emission above a few tens of GeV has been conventionally ascribed to the decay of neutral pions produced in cosmic-ray interactions with interstellar matter. Cosmic-ray electrons may, however, make a significant contribution to the gamma-ray spectrum at high energies, and even ...
متن کاملAnomalous transport of cosmic ray electrons
Anomalous transport processes in which the variance of the distance travelled does not necessarily increase linearly with time: 〈 ∆x 〉 ∝ t with 0 < α < 2 are modelled using the formalism of continuous time random walks. We compute particle propagators which have the required dependence on space and time and use these to find the spatial dependence of the synchrotron radiation emitted by a popul...
متن کاملProduction and propagation of cosmic-ray positrons and electrons
We have made a new calculation of the cosmic-ray secondary positron spectrum using a diffusive halo model for Galactic cosmic-ray propagation. The code computes self-consistently the spectra of primary and secondary nucleons, primary electrons, and secondary positrons and electrons. The models are first adjusted to agree with the observed cosmic-ray Boron/Carbon ratio, and the interstellar prot...
متن کاملTime Delays in Cosmic Ray Propagation
Cosmic Rays (CR) travel at speeds essentially indistinguishable from the speed of light. However whilst travelling through magnetic fields, both regular and turbulent, they are delayed behind the light since they are usually charged particles and their paths are not linear. Those delays can be so long that they are an impediment to correctly identifying sources which may be variable in time. Fu...
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ژورنال
عنوان ژورنال: Physical Review
سال: 1933
ISSN: 0031-899X
DOI: 10.1103/physrev.44.406