Photodisintegration of <sup>7</sup>Li with progeny nuclei in excited states

We study the reaction channels 7Li + γ → n + 6Li(2.19), 7Li + γ → n + 6Li(3.56), and 7Li + γ → d + 5He(1.27) → n + d + 4He by detecting neutrons produced by photodisintegration events. We find absolute cross sections and angular dependence for 7Li + γ → n + 6Li(2.19) at photon energies 13 and 15 MeV and for 7Li + γ → n + 6Li(3.56) at the photon energy 15 MeV. The incident photons are linearly polarized and we report dependence of the cross sections on polarization. For the reaction channel 7Li + γ → d + 5He(1.27) → n + d + 4He we obtain an upper bound on its cross section at photon energies 12, 13, and 15 MeV.

Author(s): 
W. A. Wurtz, R. E. Pywell, B. E. Norum, S. Kucuker, B. D. Sawatzky, H. R. Weller, S. Stave, and M. W. Ahmed
Journal Reference: 
Phys. Rev. C 92, 044603 (2015)