| 1 | New Astrophysical Reaction Rates for ^18F(P,α)^15O and ^18F(P,γ)^19Ne显示文摘The rates of the thermonuclear ^18F(P,α)^15O and ^18F(P,γ)^19Ne reactions in hot astrophysical environments are needed to understand gamma-ray emission from nova explosions. The rates for these reactions have been uncertain due to discrepancies in recent measurements, as well as to a lack of a comprehensive examination of the available structure information in the compound nucleus ^19Ne. We have examined the latest experimental measurements with radioactive and stable beams, and made estimates of the unmeasured ^19Ne nuclear level parameters, to generate new rates with uncertainties for these reactions. The rates are expressed as numerical values over the temperature range relevant for stellar explosions, as well as analytical expressions as functions of temperature in a format suitable for use in astrophysical simulations. Comparisons with the previous rate calculations are carried out, and the astrophysical implications are briefly discussed. | 舒能川 D.W.Bardayan J.C.Blackmon 陈永寿 R.L.Kozub P.D.Parker M.S.Smith | 2003 | Chinese Physics Letters2003，20，9： | 0 |
| 2 | Expressions for the ^(18)F(p,α) ^(15)O and ^(18)F(p,γ) ^(19)Ne Astrophysical Reaction Rates显示文摘Hydrogen is burned explosively in stellar explosions such as novae, X-ray bursts, X-ray pulsars, and supemovae, as well as possibly in other exotic astrophysical environments such as accretion disks around black holes, Thorne-Zytkow objects, and supermassive stars. Temperatures in these environments range from 107 to 109 K and above, and densities from 102 to 106g/cm3. In such sites, | N.Shu M.S.Smith D.W.Bardayan J.C.Blackmon D.W.Bardayan R.L.Kozub P.D.Parker Y.S.Chen | 2001 | Annual Report of China Institute of Atomic Energy2001，，0： | 0 |
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