Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981ap%26ss..79..153d&link_type=abstract
Astrophysics and Space Science, vol. 79, no. 1, Sept. 1981, p. 153-158.
Astronomy and Astrophysics
Astrophysics
2
Corpuscular Radiation, Cosmic Dust, Cosmic Ray Showers, Energetic Particles, High Energy Interactions, Primary Cosmic Rays, Charged Particles, Intergalactic Media, Interstellar Magnetic Fields, Particle Acceleration, Particle Interactions, Radii, Relativistic Particles
Scientific paper
It is argued that there exists no clear-cut observational evidence that is inconsistent with the charged dust particle nature of primary cosmic rays of energy greater than 10 to the 18th eV. The acceleration of charged dust grains to suprathermal and relativistic velocities is considered, and mechanisms of submicron particle energy loss by scattering and absorption are discussed. Observational data from extensive air showers is then examined, and it is pointed out that, as for primary cosmic ray nuclei, the energy gain mechanism of a charged grain depends on its charge to mass ratio, its propagation is rigidity dependent, and its interaction with an air nucleus does not produce mesons.
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