NASA NTRS · 19770035527
Gamma-ray lines from interstellar grains
Abstract
The letter points out the existence of a hitherto unknown component of gamma-ray line emission: very narrow (FWHM less than 5 keV) lines from interstellar grains. The prime candidate for detection is the line at 6.129 MeV from O-16, but other very narrow lines could also be detected at 0.847, 1.369, 1.634, 1.779, and 2.313 MeV from Fe-56, Mg-24, Ne-20, Si-28, and N-14. Measurements of this line emission can provide information on the composition, size, and spatial distribution of interstellar grains.
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Lingenfelter, R. E., Ramaty, R.. 1977-01-01. Gamma-ray lines from interstellar grains. https://ntrs.nasa.gov/citations/19770035527
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