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- W2039543967 abstract "view Abstract Citations (32) References (21) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS 7Li and 7Be De-Excitation Lines: Probes for Accelerated Particle Transport Models in Solar Flares Murphy, R. J. ; Hua, X. -M. ; Kozlovsky, B. ; Ramaty, R. Abstract The photon energy spectrum of a spectral feature composed of the 429 and 478 keV gamma-ray lines from Be-7 and Li-7 (produced by interactions of flare-accelerated alpha particles with ambient He in the solar atmosphere) depends on the angular distribution of the interacting accelerated particles. This spectrum is calculated for limb and disk-centered flares using a loop model for the transport of the ions. The resulting spectra are compared with data from the April 27, 1981 limb flare obtained with the gamma-ray spectrometer on SMM, providing convincing evidence for the existence of the (Li-7)-(Be-7) feature in this flare. By comparing the fluence of this feature with that of the 511 keV line, it is shown that the accelerated alpha particle abundance or the ambient He abundance, or both, must be enhanced. Publication: The Astrophysical Journal Pub Date: March 1990 DOI: 10.1086/168466 Bibcode: 1990ApJ...351..299M Keywords: Beryllium; Lithium; Molecular Excitation; Particle Acceleration; Solar Flares; Gamma Rays; Light Scattering; Magnetohydrodynamics; Photosphere; Solar Limb; Transport Properties; Solar Physics; GAMMA RAYS: GENERAL; HYDROMAGNETICS; SUN: FLARES; SUN: PARTICLE EMISSION full text sources ADS |" @default.
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- W2039543967 date "1990-03-01" @default.
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- W2039543967 title "Li-7 and Be-7 de-excitation lines - Probes for accelerated particle transport models in solar flares" @default.
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