Abstract
Angular distributions for the ground state neutrons have been measured at 8.3, 9.0, 9.6, 10.0, 10.5, 15.0, 16.55 and 18.0 MeV using a time-of-flight spectrometer. The excitation and width of the first excitated state of 6Be has been measured to be 1.67±0.05 MeV and 1.18±0.07 MeV, respectively. The angular distributions of the neutrons from the 1.67 MeV state has also been measured. Below 11 MeV, the angular distributions are simple and indicate a compound nucleus process. Above 11 MeV, the results cannot easily be interpreted in terms of the compound nucleus, but on the other hand a direct-reaction theory has also failed to give agreement with experiment. Evidence has been found for a possible second excited state in 6Be at about 3.0 MeV.
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