The acceleration of heavy nuclei in solar flares

Sakurai, Kunitomo

doi:10.1016/0032-0633(75)90183-x

Planetary and Space Science

1975

DOI: 10.1016/0032-0633(75)90183-x

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The acceleration of heavy nuclei in solar flares

Kunitomo Sakurai

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1979

1983

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Cited by 3 publications

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Coulomb losses and the nuclear composition of the solar flare accelerated particles

Korchak

1980

Sol Phys

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The influence of Coulomb collisions in two-component plasma on the nuclear composition and the charge-state of accelerated particles is investigated. The main characteristics are the location and value of the two loss maxima. It is shown that the maximum of energy losses on the electron component of plasma for flares is a high energy threshold which prevents the penetration of a large particle flux into the range ~> 10 MeV nucl -I. The low-energy range up to the maximum is considered in detail. At preliminary or initial stage of acceleration the nuclear composition of accelerated particles is strongly dependent on their energy losses on the proton component of plasma which prevails at low energies. The conditions under which the equilibrium charge is reached are investigated.

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Coulomb losses and the nuclear composition of the solar flare accelerated particles

Korchak

1980

Sol Phys

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Prompt acceleration of ? 30 MeV per nucleon ions in solar flares

Melrose

1983

Sol Phys

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Compositions of energetic particle populations in interplanetary space

Gloeckler

1979

Reviews of Geophysics

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Although the study of the composition of low‐energy particles in the interplanetary medium is a relatively new subject, our knowledge in this field has been advancing rapidly. Discoveries of pronounced anomalies in the compositions of solar flare particles and low‐energy “cosmic‐rays”, and of large‐scale interplanetary acceleration regions beyond several AU have been followed by more systematic investigations aimed at characterizing each of the components of the interplanetary energetic particle population. The discoveries may be attributed to a combination of three favorable circumstances: (a) availability of sophisticated instruments capable of performing composition measurements at low energies, (b) properly instrumented deep space probes exploring the outer and inner heliosphere, and (c) a favorable time period in the solar activity cycle during which the discovered phenomena were especially prominent. Composition measurements not only have played a key role in the initial discoveries, but have also contributed significantly to our understanding of the acceleration processes responsible for the production of energetic particles which populate interplanetary space.

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The acceleration of heavy nuclei in solar flares

Cited by 3 publications

References 32 publications

Coulomb losses and the nuclear composition of the solar flare accelerated particles

Coulomb losses and the nuclear composition of the solar flare accelerated particles

Prompt acceleration of ? 30 MeV per nucleon ions in solar flares

Compositions of energetic particle populations in interplanetary space

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