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

NUCLEAR, HEAVY ION AND ATOMIC PHYSICS

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

M. AHMAD，

W. AHMAD，

M. U. RAJPUT，

A. QAYYUM

Nuclear Science and Techniques

Vol.16, No.6

pp.325-329

Published in print 01 Dec 2005

CLC：O571.42+1,O657.4

34200

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.

Absolute intensitiesPrompt gamma raysk0-standardizationManganese-56

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