SHIKHA PRASAD
Articles written in Pramana – Journal of Physics
Volume 94 All articles Published: 20 July 2020 Article ID 0109 Research Article
Importance of self-shielding in mass measurements using $\gamma$-ray spectroscopy
Due to the exponential attenuation of photons in materials, thick samples will attenuate a large portion of photons. This is a source of error in methods such as neutron activation analysis, which use gamma spectroscopy to characterise a radioactive source. A method is developed to quantify the magnitude of self-shielding with the help of MCNP6. Then the mass of an unknown sample is determined by comparing the known sample mass and the photopeak counts of the unknown and the known samples following activation. The inclusion of self-shielding effects is shown to make this comparative mass analysis measurement technique more accurate. Accounting for the self-shielding effects allows the true source, instead of the shielded source, to be resolved by correcting for the photons that are attenuated as they try to escape the sample and reach the detector. The $\gamma$-ray measurements were made using several samples of varying shapes.
Volume 96 All articles Published: 7 April 2022 Article ID 0071 Research Article
Construction of neutron energy spectrum is of interest in various scientific fields such as nuclear power, nuclear security,
industrial applications of nuclear and fundamental physics. A genetic neutron spectrum unfolding method is proposed to
generate neutron energy spectrum giving light output data from a liquid organic scintillation detector. The method presented
attempts to unfold given minimum a
Volume 97, 2023
All articles
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