Production of Li, Be, and B in the early Galaxy

Abstract

view Abstract Citations (115) References (22) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Production of Li, Be, and B in the Early Galaxy Steigman, Gary ; Walker, Terry P. Abstract The production of lithium, beryllium, and boron via collisions between cosmic rays and interstellar gas nuclei during the early (Population II) evolution of the Galaxy is considered. There is a qualitative as well as quantitative difference from the usual (Population I) spallation production of these intermediate-mass nuclei. In particular, since Li-6 and Li-7 can be produced via alpha + alpha fusion reactions whereas Be-9, Be-10, and Be11 require CNO nuclei as spallation targets, the ratio of Li to Be or B is vastly different from that predicted in previous spallation calculations. Current data do not exclude (and may even support) the possibility that significant amounts of Li are produced through this mechanism and recently quoted constraints must be reconsidered in light of these results. Publication: The Astrophysical Journal Pub Date: January 1992 DOI: 10.1086/186266 Bibcode: 1992ApJ...385L..13S Keywords: Beryllium; Boron; Galactic Evolution; Lithium; Milky Way Galaxy; Nuclear Astrophysics; Abundance; Chemical Composition; Cosmic Rays; Nuclear Fusion; Astrophysics; GALAXIES: EVOLUTION; ISM: ABUNDANCES full text sources ADS | data products SIMBAD (4)