Effect of proton‐amplified waves on the evolution of solar energetic particle composition in gradual events | Zendy

Ng Chee K. | Zendy; Reames Donald V. | Zendy; Tylka Allan J. | Zendy

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Effect of proton‐amplified waves on the evolution of solar energetic particle composition in gradual events

Author(s) -

Ng Chee K.,

Reames Donald V.,

Tylka Allan J.

Publication year - 1999

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/1999gl900459

Subject(s) - proton , physics , solar wind , ion , particle (ecology) , diffusion , particle acceleration , spectral line , solar energetic particles , wave–particle duality , computational physics , event (particle physics) , atomic physics , astrophysics , nuclear physics , electron , plasma , astronomy , coronal mass ejection , geology , oceanography , quantum mechanics , thermodynamics

We present a model of the coupled evolution of energetic ions and Alfvén waves, incorporating magnetic focusing, pitch‐angle diffusion, wave amplification, and a traveling ion source. Ion transport through proton‐amplified waves with non‐Kolmogorov spectra produces the contrasting three‐stage evolution of Fe/O and He/H ratios at several MeV/amu observed by Wind/EPACT in the 20 April 1998 gradual solar energetic particle event [ Tylka et al. , 1999].

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