We use cookies to ensure that we give you the best experience on our website. By continuing to browse this repository, you give consent for essential cookies to be used. You can read more about our Privacy and Cookie Policy.

Durham e-Theses
You are in:

Radiochemical studies of pine structure in chain yields from neutron-induced fission

Sellars, John (1967) Radiochemical studies of pine structure in chain yields from neutron-induced fission. Doctoral thesis, Durham University.



The cumulative fission yields of several mass chains have been determined radiochemically relative to those of mass-99 and -97 for fission of uranium- 238 and thorlam-232 induced by both 3- and 14.8-MeV neutrons. The yields of mass chains 133 and 135 produced in these fissioning systems were calculated from measurements of xenon-133 and -135. Yields of mass chains 131 to 13k resulting from 14.8-MeV neutron-Induced fission of uranlum-238 were calculated from measurements of the iodine isotopes in the decay chains. An end-window gas-flow (β-proportional counter was used to count the solid sources; gas Geiger-counters were used to count the xenon samples. Computer techniques were employed to analyse the decay data. Fine structure was observed in the mass-yield curves around masses 133-135 for fission of uranlum-238 at both neutron bombarding energies; it was also observed for fission of thorlum-232 at the lower but not at the higher excitation energy. The results are discussed In relation to other relevant experimental data and theoretical models.

Item Type:Thesis (Doctoral)
Award:Doctor of Philosophy
Thesis Date:1967
Copyright:Copyright of this thesis is held by the author
Deposited On:13 Nov 2013 16:07

Social bookmarking: del.icio.usConnoteaBibSonomyCiteULikeFacebookTwitter