Abstract
The triton angular distribution in the 12 C( 7 Li,t) 16 O reaction has been measured at 20 MeV incident energy. Comparison of the data with Finite Range DWBA and CDCC-CRC calculations show that breakup coupling effects are prominent in the transfer to the ground state. This observation is similar to that in the 12 C( 6 Li,d) reaction at the same incident energy. The alpha spectroscopic factor of the 16 O ground state is determined (Sα=0.25) from a comparison of the measured angular distribution with respect to the CDCC-CRC calculations. The E2 S-factor of the 12 C(α,γ) reaction at 300 keV in the framework of a potential model is determined to be about 118 keV-barn.
Highlights
The triton angular distribution in the 12C(7Li,t)16O reaction has been measured at 20 MeV incident energy
In the single particle approximation the 16O many body wave function can be written as ψ = Sα u where Sa is the alpha spectroscopic factor and u is the α+12C bound state wavefunction generated from some single particle potential
The relation C2 = Sb2 arrived at can be used to determine the Asymptotic Normalization Constant (ANC) of the 6.92 MeV state if the alpha spectroscopic factor is determined from comparison of the measured transfer angular distributions with respect to an appropriate theoretical calculations [9]
Summary
[5,6] at various incident energies have been used to determine the reduced alpha width of 16O states. This can be investigated in the framework of the Continuum Discretized Coupled. The analysis of the 12C(6Li,d) reaction indicated the effect of very strong breakup coupling for the population of the 16O ground state [4]. In this respect the analysis of the 12C(7Li,t) reaction is interesting because 7Li has a higher breakup threshold (2.47 MeV) in comparison to 6Li. In this respect the analysis of the 12C(7Li,t) reaction is interesting because 7Li has a higher breakup threshold (2.47 MeV) in comparison to 6Li As such whether breakup influences the angular distributions as for 6Li is one of the motivation of this paper.
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