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The fission fragment total excitation energy, TXE(A), was calculated for neutron-induced fission of 227 - 233 Th using three methods. The first method is the conventional method of calculating TXE by subtracting Q value from total kinetic energy value. The second method is usually used to calculate the number of neutrons emitted and the third method is a systematic method by applying the intrinsic energy within the statistical scission point model. Third method has been modified based on the results of the other two methods and the required parameters have been obtained from neutron-induced fission of 232 Th to calculate TXE distribution for other thorium isotopes. This indicates that for all thorium isotopes, TXE values increase with increasing mass numbers of fission fragments, except for the fission fragments with mass number about 95–100. [ABSTRACT FROM AUTHOR]

A combination of germanium detectors was installed at the PF1B neutron guide of the ILL to perform prompt spectroscopy of neutron-rich nuclei produced in the neutron-capture induced-fission of U and Pu. In addition, LaBr detectors from the FATIMA Collaboration were installed to complement with the EXOGAM clovers to measure lifetimes of low-lying excited states. The measured characteristics and online spectra indicate very good performances of the overall set-up. [ABSTRACT FROM AUTHOR]

Heavy ion reaction studies around Coulomb barrier energies have been generally used to investigate the effect of the structure of projectile/target on reaction dynamics. Other than providing an understanding of basic physics of the reaction dynamics, some of these reactions have been used as tools to serve as surrogates of neutron-induced compound nuclear fission cross-sections involving unstable targets. In this paper, we report some of the recent results on the determination of neutron-induced fission cross-sections of unstable actinides present in Th-U and U-Pu fuel cycles by surrogate reaction method by employing transfer-induced fission studies with Li beams. [ABSTRACT FROM AUTHOR]

Fission fragments and other charged particles leave tracks of permanent damage in most of the insulating solids. Damage track detectors are useful for personal dosimeters and for flux/dose determination of high-energy particles from accelerators or cosmic rays. A detector that has its principal response at nucleon energy above 50 MeV is provided by the fission of Bi-209. Neutrons produce the largest percentage of hadron dose in most high-energy radiation fields. In these fields, the neutron spectrum is typically formed by low-energy neutrons (evaporation spectrum) and high-energy neutrons (knock-on spectrum). We used Bi-fission detectors to measure neutron peak fluence and compared the result with the calculated value of neutron peak fluence. For the exposure to 100 MeV we have used the iThemba Facility in South Africa. [ABSTRACT FROM AUTHOR]