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- W2000452205 abstract "view Abstract Citations (423) References (74) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The alpha -Process and the r-Process Woosley, S. E. ; Hoffman, Robert D. Abstract The paper explores the alpha-rich freeze-out for values of neutron excesses larger than previously treated, and reports the discovery of nuclear systematics that, for neutron excesses greater than about 0.05, allow the creation of heavier elements all the way up to A of about 100, even when most of the ejecta is in the form of heavy elements. It is found that a large part of the nuclear flow in the r-process may be carried by charged particle reactions up to about A of about 100. It is speculated that the site of these processes is the high-entropy 'wind' of a young neutron star in which neutrino energy deposition is driving mass loss. The pass of r-process ejected per supernova is expected to be about 0.0001 solar mass per Type II or Ib supernova, but this is sensitive to details of the presupernova structure, the explosion mechanism, and the amount of material that falls back onto the neutron star when the reverse shock arrives there. Publication: The Astrophysical Journal Pub Date: August 1992 DOI: 10.1086/171644 Bibcode: 1992ApJ...395..202W Keywords: Alpha Particles; Heavy Elements; Neutron Stars; Nuclear Fusion; Nuclear Reactions; Abundance; Iron Isotopes; Nuclear Astrophysics; Astrophysics; NUCLEAR REACTIONS; NUCLEOSYNTHESIS; ABUNDANCES; STARS: SUPERNOVAE: GENERAL full text sources ADS | data products SIMBAD (1)" @default.
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- W2000452205 title "The alpha-process and the r-process" @default.
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