Detonation-wave structure and nucleosynthesis in exploding carbon--oxygen cores and white dwarfs
The structure of steady detonation waves in strongly degenerate carbon C/sup 12/ of initial density rho/sub 0/ = 10/sup 6/--10/sup 8/ g/cm/sup 3/ is studied, using a kinetic network of about 600 nuclear reactions and 84 nuclides from C/sup 12/ to Ni/sup 56/ (including p, n, ..cap alpha..). Existence conditions are established for all detonation regimes admitted by the hydrodynamic theory of combustion. The hydrodynamic and kinetic zone widths X/sub h/, X/sub e/ of a detonation wave (X/sub e/> or =X/sub h/) are calculated as a function of rho/sub 0/. Below a critical density rho/sub det/ roughly-equal10/sup 7/ g/cm/sup 3/, detonation in C--O white dwarfs and red giant cores will not produce the Fe-peak elements but will yield abundant lighter elements (O, Ne, Mg, Si, S, Ar, Ca, ...), in qualitative accord with recent spectroscopy of type I supernovae and SNRs.
- Research Organization:
- Institute of Theoretical and Experimental Physics, Moscow; and Astronomical Council, USSR Academy of Sciences, Moscow
- OSTI ID:
- 6150931
- Journal Information:
- Sov. Astron. Lett. (Engl. Transl.); (United States), Journal Name: Sov. Astron. Lett. (Engl. Transl.); (United States) Vol. 10:4; ISSN SALED
- Country of Publication:
- United States
- Language:
- English
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Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARBON 12
CARBON ISOTOPES
COSMIC RADIO SOURCES
DETONATION WAVES
DWARF STARS
ELEMENTS
ERUPTIVE VARIABLE STARS
EVEN-EVEN NUCLEI
EXPLOSIONS
FLUID MECHANICS
GIANT STARS
HYDRODYNAMICS
ISOTOPES
LIGHT NUCLEI
MECHANICS
NONMETALS
NUCLEI
NUCLEOSYNTHESIS
OXYGEN
RED GIANT STARS
SHOCK WAVES
STABLE ISOTOPES
STAR EVOLUTION
STARS
SUPERNOVA REMNANTS
SUPERNOVAE
SYNTHESIS
VARIABLE STARS
WHITE DWARF STARS