Angular Distribution of Neutron Flux around the Tritium Target of 14 MeV Neutron Generator

The angular distribution of the 14 MeV neutrons emitted through D-T reaction was measured around the tritium target of a 14 MeV neutron generator using two different sample holders and also theoretically estimated. The samples were made out of 99.99% pure Aluminium foil and irradiated with the neutrons. In the neutron irradiated aluminum samples, the gamma-ray activity, induced through the nuclear reaction Al-27(n,alpha)Na-24 was measured by a NaI(Tl) detector. Using one of the sample holders the axial distribution of neutron flux was also estimated. The discrepancy from the isotropic pattern was accounted for by reasons related to the in-between matrices and design of the tritium target mounting assembly.