Effect of Coulomb Losses on the Spectra of Heavy Particles Accelerated in Prolonged Solar Events

Details Effect of Coulomb Losses on the Spectra of Heavy Particles Accelerated in Prolonged Solar Events Effect of Coulomb Losses on the Spectra of Heavy Particles Accelerated in Prolonged Solar Events

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000arep...44..833s&link_type=abstract

Astronomy Reports, Volume 44, Issue 12, December 2000, pp.833-840

Astronomy and Astrophysics

Astronomy

2

Scientific paper

This paper examines the possibility of using the energy spectra of accelerated solar cosmic-ray ions and features formed by Coulomb losses to study the solar plasma (the power-law index S for the scattering turbulence, particle number density N, and temperature T of the background medium). For an individual solar flare, Coulomb losses can be manifest to different degrees in the spectra of different ions, providing a means to determine S. A comparison of theoretical spectra for H, He, C, O, and Fe ions with observed spectra for the prolonged solar flare of October 20, 1995 yields S≈3, N≈5×109 cm-3, and T≈106 K, assuming that the characteristic time scale over which these particles gain energy is about a second.

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