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Record Details

Record 49 of 21528
Solar flare gamma-ray line shapes
External Online Source: doi:10.1086/191471
Author and Affiliation:
Werntz, C.(Catholic Univ. of America, Washington, DC, United States)
Kim, Y. E.(Catholic University, of America, Washington, DC, United States)
Lang, Frederick L.(NASA Goddard Space Flight Center, Greenbelt, MD)
Abstract: A computer code has been developed which is used to calculate ab initio the laboratory shapes and energy shifts of gamma-ray lines from (C-12)(p, gamma/4.438/)p-prime(C-12) and (O-16)(p, gamma/6.129/)p-prime(O-16) reactions and to calculate the expected shapes of these lines from solar flares. The sensitivity of observable solar flare gamma-ray line shapes to the directionality of the incident particles is investigated for several projectile angular distributions. Shapes of the carbon and oxygen lines are calculated assuming realistic proton energy spectra for particles in circular orbits at the mirror points of magnetic loops, for particle beams directed downward into the photosphere, and for isotropic particle distributions. Line shapes for flare sites near the center of the sun and on the limb are shown for both thin-target and thick-target interaction models.
Publication Date: Jun 01, 1990
Document ID:
19900052378
(Acquired Nov 28, 1995)
Accession Number: 90A39433
Subject Category: SOLAR PHYSICS
Document Type: Journal Article
Publication Information: Astrophysical Journal Supplement Series (ISSN 0067-0049); 73; 349-357
Publisher Information: United States
Contract/Grant/Task Num: NSG-5066; NAGW-1365
Financial Sponsor: NASA; United States
Organization Source: Catholic Univ. of America; Washington, DC, United States
NASA Goddard Space Flight Center; Greenbelt, MD, United States
Description: 9p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: GAMMA RAY SPECTRA; LINE SPECTRA; SOLAR FLARES; CARBON; COMPUTER PROGRAMS; DOPPLER EFFECT; ENERGY SPECTRA; OXYGEN; PARTICLE BEAMS
Imprint And Other Notes: (NASA and University of New Hampshire, Workshop on Impulsive Solar Flares, 2nd, Durham, NH, Sept. 26-28, 1988) Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 73, June 1990, p. 349-357.
Availability Source: Other Sources
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