Direct reactions on 10Be

Abstract

Abstract A 10 Be target has been prepared from neutron-irradiated beryllium by the AREMIS isotope separator. Angular distributions from the (d, p), (d, t), (p, ṕ) and (d, d) reactions on 10 Be were obtained with this target. Protons leading to the ground state and first excited state of 11 Be at 12.0 MeV incident deuteron energy indicate spin and parity assignments of 1 2 + and 1 2 − , respectively. At an incident deuteron energy of 15.0 MeV, tritons could be detected up to an excitation of 5.5 MeV in 9 Be. No evidence was seen for an l = 1 transition to known states at less than 3.0 MeV excitation in 9 Be other than that to the ground state. Spectroscopic factors for observed states in the (d, p) and (d, t) reactions were obtained in DWBA analyses with reasonable parameters. Elastic and inelastic scattering of protons on 10 Be were observed at several incident energies from 12.0 MeV to 16.0 MeV. The elastic scattering was compared with optical-model calculations, and a B ( E 2) value for the 3.37 MeV (2 + → 0 + ) transition was obtained by comparison of measured inelastic angular distributions with DWBA predictions. Spectroscopic information concerning transitions within the 1p shell is in good agreement with the values obtained in the shell-model calculations of Cohen and Kurath.