Abstract
The angular distributions of neutrons leading to the ground state of 18Ne in the reaction 16O( 3He,n) 18Ne have been measured at bombarding energies of 5.6 and 6.09 MeV; using a pulsed beam time-of-flight neutron spectrometer. The angular distributions were found to be strongly peaked in the forward direction. The results have been compared with a double-stripping theory, and good agreement has been obtained with the theoretical prediction for l = 0 stripping. It is, however, impossible from the angular distributions alone to exclude the possibility that the reaction proceeds by a knock-out mechanism. If the mechanism is that of double-stripping, the results lead to the assignment of spin zero and even parity to the ground state of 18Ne, in accordance with expectation.
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