Energy Levels of⁶Li and⁶He from a Study of the⁷Li(³He,  )⁶Li and⁷Li(t,  )⁶He Reactions

Abstract

An experimental technique is described for accelerating tritium and 3He ions in a 1 MeV h.t. set and recovering the gas used by the ion source. Energy levels in 6He at 1.71 and 3.4 MeV and in 6Li at 2.19, 3.56, 4.3, 5.35, 5.6, 6.63, 7.4, 837 and 9 3 MeV were observed in a study of the reactions 7Li(t, α)6He and 7Li (3He, α)6 Li at bombarding energies in the range 600 to 900 kev. A classification of the levels has been attempted assuming charge independence of nuclear forces and good agreement is obtained with the intermediate coupling model suggested by Inglis in 1953 for a coupling parameter near the (LS) extreme.