Ratios of the Fluence of 2.22 MeV Gamma-Ray Line to the Fluence of 4.44 MeV Gamma-Ray Line in Solar Flares

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概要

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• The Hinotori satellite observed eight solar gamma-ray line flares between April,1981 and June, 1982. Ratios of the fluence of 2.22 MeV gamma-ray line restultingfrom neutron capture on proton to the fluence of 4.44 MeV gamma-ray lineresulting from the nuclear deexcitation of C are shown as a function of theheliolongitude of flare. The ratios are roughly constant for disk flares, but de-creased for limb flares. The present result suggests that the particle accelerationproduces energy spectra that do not vary much from flare to flare. The limbdarkening of the ratios can be interpreted in terms of the attenuation of the2.22 MeV gamma-ray line by Compton scattering in the photosphere.

• 社団法人日本物理学会の論文
• 1985-02-15

著者

• Yoshimori Masato

  Department Of Physics Faculty Of Science Rikkyo University

関連論文

• A Statistical Study of Gamma-Ray Emitting Solar Flares Observed with Yohkoh
• Unusual Time History of Hard X-Ray and Gamma-Ray Emissions from the 1981 April 4 Flare
• Solar Energetic Particles Studied from Yohkoh Gamma-Ray Observations
• Time Histories of Gamma-and Hard X-Ray Emissions from Solar Flares
• Observations of Solar Flare Photon Spectra from 20 keV to 7 MeV
• Deduction of Solar Neutron Fluences from Large Gamma-Ray Flares
• Solar Proton Energy Spectra Derived from Gamma-Ray Observations
• Numbers of Protons Accelerated in Solar Flares
• Solar Gamma-Ray Lines and Interplanetary Solar Protons
• Ratios of the Fluence of 2.22 MeV Gamma-Ray Line to the Fluence of 4.44 MeV Gamma-Ray Line in Solar Flares

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