CALCULATIONS OF (,n) REACTION CROSS SECTION AND GAMMA RAY INCINERATION FOR MEDIUM MASS RADIOACTIVE ISOTOPES

Abdul-Hussain    Al-Bayati; Saeed   Kamoon; Muna   Saeed

doi:10.24996/ijs.2008.49.2.%g

Authors

Abdul-Hussain Al-Bayati Department of Physics, College of Science, University of Baghdad. Baghdad – Iraq.
Saeed Kamoon Department of Physics, College of Science, University of Baghdad. Baghdad – Iraq.
Muna Saeed Department of Physics, College of Science, University of Baghdad. Baghdad – Iraq.

DOI:

https://doi.org/10.24996/ijs.2008.49.2.%25g

Keywords:

CROSS, SECTION, REACTION

Abstract

The total -n reaction cross section for radioactive fission products have been
evaluated in the region of energy near the giant dipole resonance, from the threshold
energy up to around 30 MeV. The selected fission products lay in the range of
medium mass number, namely: 87Rb, 90Sr, 93Zr, 106Ru, 123Sn, 127Te, 129I and 137Cs.
These radioactive isotopes were chosen as part of the radioactive waste from 235U
fission. Total cross section results were used to calculate the number of incinerated
nuclei, and this method shows efficiency in reducing the radioactivity of these
isotopes. The obtained results show that the incineration rate of radioactive nuclei
increases with the flux of the incident -rays, whereas the required irradiation time
was found to be shortened and inversely proportional to the incident -ray flux.
These results are consistent with those given by earlier researches.