The thermal neutron capture gamma ray facility at Pakistan Research Reactor (PARR-1) is being used forthe re-estimation of various properties like capture cross-sections, resonance integral, absolute gamma intensities...The thermal neutron capture gamma ray facility at Pakistan Research Reactor (PARR-1) is being used forthe re-estimation of various properties like capture cross-sections, resonance integral, absolute gamma intensities, etc.of different isotopes. The data for gamma ray transitions from the capture of thermal neutrons by 55Mn are not ingood agreement specifically below 2 MeV. So there is a need to re-estimate its intensities with better accuracy. Analyticalgrade MnCl2 powder and high purity Mn metal pieces were used in this study. Standard 152Eu and 60Co radioactivesources as well as thermal neutron capture γ-rays in chlorine were chosen for efficiency calibration. The k0standardization technique was applied for these measurements to eliminate systematic errors in efficiencies. Chlorinealso acted as a comparator in k0- factor calculations. The results have been tabulated for the main gamma rays from56Mn in the low as well as in the medium energy regions. The absolute intensities are in good agreement with most ofthe reported values.展开更多
文摘The thermal neutron capture gamma ray facility at Pakistan Research Reactor (PARR-1) is being used forthe re-estimation of various properties like capture cross-sections, resonance integral, absolute gamma intensities, etc.of different isotopes. The data for gamma ray transitions from the capture of thermal neutrons by 55Mn are not ingood agreement specifically below 2 MeV. So there is a need to re-estimate its intensities with better accuracy. Analyticalgrade MnCl2 powder and high purity Mn metal pieces were used in this study. Standard 152Eu and 60Co radioactivesources as well as thermal neutron capture γ-rays in chlorine were chosen for efficiency calibration. The k0standardization technique was applied for these measurements to eliminate systematic errors in efficiencies. Chlorinealso acted as a comparator in k0- factor calculations. The results have been tabulated for the main gamma rays from56Mn in the low as well as in the medium energy regions. The absolute intensities are in good agreement with most ofthe reported values.
