Astrophysical factor for the radiative capture reaction {alpha}+{ital d}{r_arrow}{sup 6}Li+{gamma}
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843 (United States)
- Institute of Nuclear Physics, Uzbek Academy of Sciences, Ulugbek, Tashkent 702132 (Uzbekistan)
We consider the radiative capture process {alpha}+{ital d}{r_arrow}{sup 6}Li+{gamma} at energies, {ital E}{sub c.m.}{le}300 keV, that are relevant for astrophysical processes. Due to the peripheral character of the reaction, the overall normalization of the astrophysical factor {ital S}{sub 24} is entirely governed by one quantity, the asymptotic normalization coefficient {ital C}{sub 01} for {sup 6}Li {r_arrow}{alpha}+{ital d}. Using the recently well established value for this constant {ital C}{sub 01}=2.3{plus_minus}0.12 fm{sup {minus}1/2}, we calculated {ital S}{sub 24} taking into account both {ital E}1 and {ital E}2 contributions. Our recommended value for {ital S}{sub 24} is 2.57 MeV nb at the most effective energy for the capture reaction in astrophysical processes, {ital E}{sub c.m.}=70 keV, which gives a reaction rate 0.036 cm{sup 3} mole{sup {minus}1} s{sup {minus}1} at the temperature 0.8{times}10{sup 9} K. We found a significant energy dependence of {ital S}{sub 24} at astrophysical energies. At energies of less than 110 keV, the {ital E}1 component dominates over the {ital E}2 component. At {ital E}{sub c.m.}=70 keV, the {ital E}1 contribution to the total transition is about 58%.
- DOE Contract Number:
- FG05-86ER40256
- OSTI ID:
- 132969
- Journal Information:
- Physical Review, C, Vol. 52, Issue 6; Other Information: PBD: Dec 1995
- Country of Publication:
- United States
- Language:
- English
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