Physics – Nuclear Physics
Scientific paper
Dec 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995phrvc..52.3483m&link_type=abstract
Physical Review C (Nuclear Physics), Volume 52, Issue 6, December 1995, pp.3483-3487
Physics
Nuclear Physics
21
Nuclear Reactions Involving Few-Nucleon Systems, 2H-Induced Reactions, 3H-, 3He-, And 4He-Induced Reactions, Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages
Scientific paper
We consider the radiative capture process α+d-->6Li+γ at energies, Ec.m.<=300 keV, that are relevant for astrophysical processes. Due to the peripheral character of the reaction, the overall normalization of the astrophysical factor S24 is entirely governed by one quantity, the asymptotic normalization coefficient C01 for 6α+d. Using the recently well established value for this constant C01=2.3+/-0.12 fm-1/2, we calculated S24 taking into account both E1 and E2 contributions. Our recommended value for S24 is 2.57 MeV nb at the most effective energy for the capture reaction in astrophysical processes, Ec.m.=70 keV, which gives a reaction rate 0.036 cm3 mole-1 s-1 at the temperature 0.8×109 K. We found a significant energy dependence of S24 at astrophysical energies. At energies of less than 110 keV, the E1 component dominates over the E2 component. At Ec.m.=70 keV, the E1 contribution to the total transition is about 58%.
Mukhamedzhanov M.-A. A.
Sattarov Akhdior
Schmitt R. P.
Tribble Robert E.
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