Absolute Neutron Yields from Alpha-Particle Interaction with Thick Targets of Natural Carbon

Recent measurements of the neutron yield resulting from the alpha-particle bombardment of carbon have disclosed an error in the data reported in the literature. New values of the thick-target yield of neutrons are ≈20% of the previously reported values for alpha-particle energies between 2 and 5.3 MeV and ≈10% between 5.3 and 9.0 MeV.