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Thermal Expansion of Alkali Halides by Gamma-Ray Attenuation

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The temperature dependence of linear attenuation coefficient, density and thermal expansion of KCl, KBr, KF and KI has been studied by γ-ray attenuation technique in the temperature range 300 K–1000 K. The γ-ray attenuation studies have been carried out using a γ-ray densitometer. The linear attenuation coefficients (μl ) of KCl, KBr, KF and KI as a function of temperature have been determined using Cs (0.66 MeV), Am (0.595 MeV), CO (1.173 MeV and 1.332 MeV) different energies of γ-beam. The variation of density and coefficients of temperature dependence of density have been reported. The variation of thermal expansion of these alkali halides studied in the present work has been compared with the results obtained from other methods. The variation in these thermophysical properties have been represented by linear equations. Volume thermal expansion coefficients and mass attenuation coefficients (μ) of these compounds for the different energies have been reported and compared with data calculated by other method.
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Keywords: DENSITY; LINEAR ATTENUATION COEFFICIENT; PROGRAMMABLE TEMPERATURE FURNACE; THERMAL EXPANSION; γ-RAY DENSITOMETER

Document Type: Research Article

Publication date: June 1, 2013

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  • Journal of Advanced Physics is an interdisciplinary peer-reviewed journal consolidating research activities in all experimental and theoretical aspects of advanced physics. The journal aims in publishing articles of novel and frontier physics that merit the attention and interest of the whole physics community. JAP publishes review articles, full research articles, short communications of important new scientific and technological findings in all latest research aspects of physics.
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