Li 6 photodisintegration

The excitation function of reactions with a neutron yield up to energies E_γ=60 MeV is determined. Besides the known maximum in the region from 7 to 17 MeV, two broad maxima in the energy region E_γ > 19 MeV are noted on the curve of dependence of the total cross section of these reactions on E_γ. Real reactions with the emission of charged particles are established and the energy spectra of these particles are determined. Relative yields of the reactions are evaluated. A substantial contribution (≈ 30 mb · MeV) of the Li ⁶(γ, t)He ³ reaction to the total cross section for the absorption of γ quanta by the Li ⁶ nucleus is registered. The energy region of the most intense absorption of γ quanta by the Li ⁶ nucleus is established ( E_{γ = 20 to MeV, σ0, 45 mb · MeV} ). The experimental value of the integral cross section for the photodisintegration of the Li ⁶ nucleus in the energy region E_thr ≦ E_γ ≦ 60 MeV does not exceed the minimum cross section calculated by the dipole sum rule (at X = 0 σ₀ = 90 mb · Mev).