Gamma and neutron irradiation effects on the structural and optical properties of potash alum crystals

Prabhu, A N and Shetty, Pramod K and Vali, Indudhar Panduranga and Kumar, Hemanth and Udupa, Sowmyasree (2017) Gamma and neutron irradiation effects on the structural and optical properties of potash alum crystals. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 413 (1). ISSN 0168-583X

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Abstract

The effects of gamma and neutron irradiation on the structural and optical properties have been presented in this article. The potash alum crystals were grown by the slow evaporation technique. The crystals were then exposed with 60Co gamma rays and Am-Be neutron source. The radiation induced effects were analysed using XRD, UV–visible techniques. The refractive index was determined by the Brewster’s angle method. There has been an increase in the diffraction peak intensity with the increase in irradiation doses, which indicates an increase in crystalline perfection of crystals. There has been a marginal change in dislocation density, micro strain and distortion parameter, which is attributed to deformation of the structure due to irradiation. The UV visible study reveals a shift in transparency cut off wavelength towards lower wavelength up to 70 kGy of gamma dose and this has resulted in an increase in optical band gap energy with increase in gamma dose. There is a considerable increase in the optical band gap after five hour neutron irradiation.

Item Type: Article
Uncontrolled Keywords: Potash alum Gamma irradiation Neutron irradiation X-ray diffraction
Subjects: Engineering > MIT Manipal > Physics
Depositing User: MIT Library
Date Deposited: 13 Dec 2017 08:57
Last Modified: 13 Dec 2017 08:57
URI: http://eprints.manipal.edu/id/eprint/150221

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