Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2005, Vol. 16 ›› Issue (6): 325

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Re-estimation of absolute gamma ray intensities of 56Mn using k0-standardization

M. AHMAD, W. AHMAD, M. U. RAJPUT, A. QAYYUM   

  1. Physics Research Division, Pakistan Institute of Nuclear Science &Technology, P.O. Nilore, Islamabad, Pakistan
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M. AHMAD, W. AHMAD, M. U. RAJPUT, A. QAYYUM. Re-estimation of absolute gamma ray intensities of 56Mn using k0-standardization.Nuclear Science and Techniques, 2005, 16(6): 325

Abstract: The thermal neutron capture gamma ray facility at Pakistan Research Reactor (PARR-1) is being used for the 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 in good agreement specifically below 2 MeV. So there is a need to re-estimate its intensities with better accuracy. Analytical grade MnCl2 powder and high purity Mn metal pieces were used in this study. Standard 152Eu and 60Co radioactive sources as well as thermal neutron capture γ-rays in chlorine were chosen for efficiency calibration. The k0 standardization technique was applied for these measurements to eliminate systematic errors in efficiencies. Chlorine also acted as a comparator in k0- factor calculations. The results have been tabulated for the main gamma rays from 56Mn in the low as well as in the medium energy regions. The absolute intensities are in good agreement with most of the reported values.

Key words: Absolute intensities, Prompt gamma rays, k0-standardization, Manganese-56