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3篇 您的检索式:作者名="D.W.Bardayan"
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1^(18)F(p,α)^(15)O,^(18)F(p.γ)^(19)Ne的核天体反应几率显示文摘氢在恒星的爆炸中燃烧。在这些环境中,温度范围为107~109K或更高,密度范围为102K~106g/cm3。在这些地方,核反应可以很快的发生,以致放射性核素诸如14O、15O、17F、18F等,在有机会衰变之前就俘获了质子。有关在这些环境中放射性核素的质子诱发反应,对于确定核素的合成以及能量的产生扮演着重要的角色。 特别是,当爆炸后,预测新星包层这些放射性核素的总量存在着很大的偏差,因为现在的18F(p,α)15O和18F(p。舒能川 M.S.Smith D.W.Bardayan D.W.Bardayan 2001中国原子能科学研究院年报2001,,1:0
2New 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 2003Chinese Physics Letters2003,20,9:0
3Expressions 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 2001Annual Report of China Institute of Atomic Energy2001,,0:0
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