Abstract
Using dual-fission chambers each loaded with a thick actinide target of or and two thin reference foils of the same actinide, the cumulative yields of fission products ranging from to have been measured at . The reaction provided the quasimonoenergetic neutron beam. The experimental setup and methods used to determine the fission product yield (FPY) are described, and results for typically eight high-yield fission products are presented. Our FPYs for , and at 8.9 MeV are compared with the existing data below 8 MeV from Glendenin et al. [Phys. Rev. C 24, 2600 (1981)], Nagy et al. [Phys. Rev. C 17, 163 (1978)], Gindler et al. [Phys. Rev. C 27, 2058 (1983)], and those of Mac Innes et al. [Nucl. Data Sheets 112, 3135 (2011)] and Laurec et al. [Nucl. Data Sheets 111, 2965 (2010)] at 14.5 and 14.7 MeV, respectively. This comparison indicates a negative slope for the energy dependence of most fission product yields obtained from and , whereas for the slope issue remains unsettled.
1 More- Received 5 March 2015
- Revised 18 April 2015
DOI:https://doi.org/10.1103/PhysRevC.91.064604
©2015 American Physical Society