Investigations of the ¹⁴N(γ,2α)⁶Li Reaction

A digital measurement technique of points coordinates along the tracks was developed for the stereo frame photonuclear reaction data bank created in KIPT. The main procedure is the analysis of pixel intensity in the area of tracks. The 14N(γ,2α) 6Li reaction was chosen as a test reaction for measurement. A kinematic scheme for calculating the physical parameters of the reaction was created assuming a two-particle decay mode with the formation of an intermediate excited state. Experimental data and kinematic calculation were compared. Events corresponding to the partial channel of the 14N(γ,6Li)8Be0 reaction with the subsequent two-particle decay 8Be → α +α were identified and the partial cross section of this channel was measured. The energy and angular distributions of particles at each decay stage were analyzed.