Narrow Results

Thorium is the primary candidate fuel in Thorium-based Molten Salt Reactor (TMSR) and Accelerator Driven System (ADS). However, to utilize Thorium in the reactor and accelerator systems, nuclear data in the literature are not sufficient for neutron-induced fission reaction process. Therefore, we estimated neutron fission cross-section $\sigma$ (mb), independent $Y(A)$ and primary fission fragment yield $Y_I(A)$, mass-dependent average neutron multiplicity $\bar{\nu }(A)$, energy-dependent average neutron multiplicity $\bar{\nu }(E)$ and neutron emission multiplicity distribution $\nu$ of ${}^{232}\mathrm{\text{Th}}$ for different neutron incident energy values, 1 MeV, 1.5 MeV, 3 MeV, 5.5 MeV, 7.7 MeV, 10 MeV, 14.8 MeV and 20 MeV, where the energy region is important for the reactor and accelerator systems used in the industry. The obtained results are compared with experimental data obtained from the literature and are discussed for each energy value.

A review is given of present and planned involvement in ADSR research in the UK, and the activities of the ThorEA association.

The cluster radioactivity of ^208–238Th was studied by using a fission-like model taking interacting potential as the sum of coulomb and proximity potentials. The emission of the particle is considered as a quantum tunneling penetration of the potential barrier in the semi-classical WKB approximation. The released energy is deduced from the new table of atomic mass evaluation (AME12) and from the Finite Range Droplet Model. The obtained decay half-lives are compared with the few available experimental values and those of the effective liquid drop model.