(α, d) and (α, t) Reactions on Be⁹, F¹⁹ and Al²⁷ at 28.6 MeV

Abstract

Momentum spectra were obtained at several angles for deuteron and triton groups from the (α, d) and the (α, t) reactions on Be⁹, F¹⁹ and Al²⁷ at 28.6 MeV with a broad range magnetic analyzer and nuclear emulsions. The particles were identified by the measurement of the track length of the particles in the emulsions. The (α, d) reactions were found to be similar to the (d, p) reactions in the behaviour of the excitation of the residual nuclear states explained by the Nilsson model. For the single particle states, the higher l-value transition is favoured in the (α, d) reaction in contrast to the (d, p) reaction. In the (α, t) reaction the differential cross sections for the ground states of B¹⁰ and Si²⁸ and for the first excited state of Ne²⁰ are preferentialy large and show forward rise.