Alpha Emitting Reactions on Be9, B10 and B11 Induced by Protons, Deuterons and Alpha-Particles

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Abstract
The angular distributions have been obtained for alpha-particles from the reactions Be 9 ( p , α) Li 6 (ground state), Be 9 ( d , α) Li 7 (ground, first and second excited states), B 10 ( p , α) Be 7 (ground state), B 10 ( d , α) Be 8 (ground state), B 11 ( p , α) Be 8 (ground state) and B 11 ( d , α) Be 9 (ground and second excited states), and from the elastic and inelastic (second excited state) scatterings of alpha-particles by Be 9 . Besides, the angular distribution of deuterons from the reaction Be 9 ( p , d ) Be 8 (ground state) was measured. The energies of incident beams were nearly 7 MeV for protons, 14 MeV for deuterons and 28 MeV for alpha-particles. The results, except for B 10 ( p , α)Be 7 and B 11 ( p , α)Be 8 , show forward and/or backward rises and may be interpreted by direct interactions. The integrated cross sections of the reactions ( p , α) and ( d , α) on Be 9 are larger than those on B 10 and B 11 .

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