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Radiation Effects and Defects in Solids
Incorporating Plasma Science and Plasma Technology
Volume 138, 1996 - Issue 3-4
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Section B: Crystal lattice defects and amorphous materials

On the studies of thermodynamics properties of fast neutron irradiated (LixK1−x)2SO4 crystals

A. M. El-Khatib Physics Department, Faculty of Science, Alexandria University, Egypt
,
M. E. Kassem Physics Department, Faculty of Science, Alexandria University, Egypt
,
N. G. Gomaa Physics Department, Faculty of Science, Alexandria University, Egypt
&
S. A. Mahmoud Physics Department, Faculty of Science, Alexandria University, Egypt
Pages 319-326 | Received 08 Oct 1992, Accepted 20 Nov 1992, Published online: 19 Aug 2006
 
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Abstract

The effect of fast neutron irradiation on the thermodynamic properties of (LixK1−x)2SO4, (x = 0.1, 0.2,˙˙˙˙˙˙˙˙0.5) has been studied. The measurements were carried out in the vicinity of phase transition. The study reveals that as the lithium content decreases the first high temperature phase Tc = 705 K disappears, while the second one is shifted to lower temperature. It is observed also that the specific heat, Cp, decreases sharply with neutron integrated fluence φ and increases once more. Both entropy and enthalpy changes increase with the increase of neutron integrated fluence.

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