Direct determination of the outcomes of interaction of X-rays/gamma-rays with nanoparticles

Darukesha, BHM and Radhakrishna, V and Rajanna, K (2023) Direct determination of the outcomes of interaction of X-rays/gamma-rays with nanoparticles. In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1048 .

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Abstract

An experimental technique to determine the outcome of the interaction of gamma-rays with the given nanoparticles is contributed. The interactions involve gamma-rays of energies used in practical applications. The technique determines the outcomes directly. The variations in the number of counts and shape of pulse height spectra obtained before and after loading the nanoparticles into a liquid scintillator for given gamma-ray irradiation under identical conditions reveal the outcome of the interactions. Results reveal that the interaction of low-energy gamma-rays such as those from 241Am, 133Ba with the nanoparticles tested resulted in the emission of electrons from the nanoparticles. Among the nanoparticles tested, Gd2O3 emitted the greatest number of electrons. Photons with energy lying between 14 keV and 81 keV undergo greater interaction with the nanoparticles than those with other energies. High-energy gamma-rays transmit through the nanoparticles without interaction. The technique distinguishes the abundance and energy profile of electrons emitted from different nanoparticles upon irradiation with gamma-rays. Results enable test-selection of nanoparticles for applications such as the development of fast-efficient-large-affordable gamma-detectors, nanoparticle radiosensitization for cancer treatment, and the development of Pb-free efficient radiation shields for healthcare workers. © 2022

Item Type:	Journal Article
Publication:	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Publisher:	Elsevier B.V.
Additional Information:	The copyright for this article belongs to Elsevier B.V.
Keywords:	Gadolinium compounds; Gamma rays; Irradiation; Radiation shielding; Scintillation counters, Fast and efficient gamma-detector; Gamma detectors; Gamma-rays; Interaction of radiation with nanoparticle; Nanoparticle loaded plastic scintillator; Nanoparticle radiosensitization; Pb-free; Pb-free radiation shield; Plastic scintillator; Radio-sensitization, Nanoparticles
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	27 Jan 2023 07:13
Last Modified:	27 Jan 2023 07:13
URI:	https://eprints.iisc.ac.in/id/eprint/79529

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