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Influence of D-state in 4He on S Factor for the 2H(d,γ)4He Reaction |
| MA Yin-Qun1,2;TIAN Yuan1;MA Zhong-Yu1,3 |
| 1China Institute of Atomic Energy, PO Box 275(18), Beijing 102413
2Department of Physics, Taiyuan Teachers College, Taiyuan 030001
3Centre of Theoretical Nuclear Physics, National Laboratory of Heavy Collision, Lanzhou 730000 |
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| Cite this article: |
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MA Yin-Qun, TIAN Yuan, MA Zhong-Yu 2007 Chin. Phys. Lett. 24 69-71 |
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Abstract We employ a direct capture method to study the influence of D-state in 4He on S factor for the 2H(d,γ)4He reaction, in which the D-state component of the colliding deuterons and D-state component in 4He ground state are considered. The parameters of Woods--Saxon (WS) potentials are obtained by reproducing the binding energy of d--d (i.e. 2H--2H) system, and d--d elastic scattering phase shifts calculated by the resonating group method. The theoretical results are in good agreement with the experimental data at Ec.m < 3MeV. The impact of the D state probability in 4He on the extrapolated value of the astrophysical S factor for 2H(d,γ)4He reaction is discussed.
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| Keywords:
21.30.-x
25.40.Lw
26.35.+c
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Published: 01 January 2007
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