Differential cross sections \(^4\)He({\(\gamma\),p})\(^3\)H and \(^4\)He({\(\gamma\),n})\(^3\)He reactions in the range of the photon energies up to the threshold of the meson production

Differential cross sections two-body (\(\gamma,p\)) and (\(\gamma,n\)) reactions of the \(^4\)He nucleus disintegration were measured using the bremsstrahlung beam of photons at the KIPT linac LEA-300 at the maximum energy \({\rm E}_{\gamma}^{max}\) = 150 MeV. The reaction products were detected in a diffusion chamber placed in the magnetic field. The differential cross sections were measured with a 1 MeV step up to a photon energy of 45 MeV, and with a greater step at higher energies. The step in the measurements of the polar angle of nucleon emission was \({10}^{\circ}\) in the c.m.s.