Composition variations of low energy heavy ions during large solar energetic particle events

2016 ◽  
Author(s):  
George C. Ho ◽  
Glenn M. Mason
Keyword(s):  
Heavy Ions ◽  
Energetic Particle ◽  
Solar Energetic Particle ◽  
Low Energy ◽  
Solar Energetic Particle Events

Particle-in-cell Simulation of 3He Enrichment in Solar Energetic Particle Events

2021 ◽  
Vol 922 (1) ◽  
pp. 50
Author(s):  
T. M. Li ◽  
C. Li ◽  
W. J. Ding ◽  
P. F. Chen
Keyword(s):  
Heavy Ions ◽  
Energetic Particle ◽  
Solar Energetic Particle ◽  
Particle In Cell ◽  
Selective Heating ◽  
Solar Energetic Particle Events ◽  
Acceleration Rate ◽  
Resonant Modes ◽  
Cell Simulation ◽  
Particle Resonance

Abstract 3He enrichment is one distinctive feature of impulsive solar energetic particle events. This study is designed to investigate the process of plasma wave–particle resonance, which plays a key role in selectively accelerating heavy ions. We apply a 1.5 dimensional particle-in-cell simulation to model the electron-beam–plasma interaction that generates electron and ion cyclotron waves, namely proton and 4He cyclotron waves, whose dispersions are dependent on the magnetization parameter α = ω pe/Ωce and the temperature ratio τ = T e /T p . The background particles, e.g., 3He and 4He, resonate with the excited cyclotron waves and experience selective heating or acceleration. Specifically, the resonant modes of 3He ions lead to a more effective acceleration rate compared to those of the 4He ions. The simulation results provide a potential solution for understanding the abundance of heavy ions in the solar wind.

scholarly journals Small, Low-energy, Dispersive Solar Energetic Particle Events Observed by Parker Solar Probe

2020 ◽  
Vol 246 (2) ◽  
pp. 65 ◽  
Author(s):  
M. E. Hill ◽  
D. G. Mitchell ◽  
R. C. Allen ◽  
G. A. de Nolfo ◽  
A. Vourlidas ◽  
...  
Keyword(s):  
Energetic Particle ◽  
Solar Energetic Particle ◽  
Low Energy ◽  
Energy Dispersive ◽  
Solar Energetic Particle Events

LOW ENERGY SOLAR AND GALACTIC COSMIC RAYS AT 1 AU

2002 ◽  
Vol 17 (12n13) ◽  
pp. 1685-1694
Author(s):  
MARCO CASOLINO
Keyword(s):  
Solar Cycle ◽  
Cosmic Rays ◽  
Energetic Particle ◽  
Space Station ◽  
Solar Energetic Particle ◽  
Cosmic Ray ◽  
Galactic Cosmic Rays ◽  
Low Energy ◽  
Solar Energetic Particle Events ◽  
Satellite Missions

In this work we present some of the recent results obtained with the satellite missions NINA-1 and NINA-2 and the experiments on board MIR space station Sileye-1 and 2. The aim is the study of the low energy (10 MeV - 2 GeV) cosmic ray component and different periods of the solar cycle and during Solar Energetic Particle events. Other items of physics include the measurement of the secondary cosmic ray component, produced in the interaction with the upper layers of Earth's atmosphere and the evaluation of the absorbed and equivalent doses inside MIR.

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