Investigation of Tl(p,3n)81203Pb82201 nuclear reaction in a cyclotron accelerator as a neutron source

With the same method, the neutron intensity produced from the copper sub-layer i.e. from63Cu + p → 63Zn + n nuclear reaction was calculated to be 9.19 × 1012 n/s. As a result, the total neutron intensity from thallium target and its copper sublayer was determined to be 2.179 × 1013 n/s, which is comparable with some conventional neutron sources such as Am-Be neutron source, and is high enough to be applied for different purposes. Our calculations also showed that the neutron energy spectrum from thallium target and its copper sub-layer has a peak around 1 MeV region. The angular distribution of produced neutrons, has its maximum value at angle 0-2.5° and decreases slowly as the angle of neutron emission increases, and its minimum value occurs at backward direction, i.e. 177.5-180°. It means that the produced neutrons, are mostly emitted in the forward direction.