Selective nonresonant acceleration of He-3(2+) and heavy ions by H(+) cyclotron waves

Abstract

view Abstract Citations (40) References (17) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Selective nonresonant acceleration of He-3(2+) and heavy ions by H(+) cyclotron waves Varvoglis, H. ; Papadopoulos, K. Abstract The model advanced by Fisk (1978) to explain the anomalous enhancements in the abundance of some ionic species in energetic solar particle flux measurements at about 1 AU is revised by including the proper nonlinear physics of particle energization by electrostatic ion cyclotron (EIC) waves. The revised model contains two basic concepts by Fisk: the energization by EIC waves and the need for a second stage acceleration. There is no need for exciting He-4(2+) cyclotron waves, since the dominant process is nonresonant and can be accomplished by hydrogen cyclotron waves. The A/Q selectivity in the flux available for energization in the second stage process enters through the nonlinear saturation level, which in conventional theories depends on the current that drives the instabilities. Publication: The Astrophysical Journal Pub Date: July 1983 DOI: 10.1086/184077 Bibcode: 1983ApJ...270L..95V Keywords: Abundance; Cyclotron Radiation; Heavy Ions; Helium Ions; Particle Acceleration; Solar Flares; Carbon; Oxygen Ions; Solar Physics full text sources ADS |