Thermoluminescence studies of Si+8 ion irradiated kyanite


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Nagabhushana, H. and Lakshminarasappa, B.N. and Singh, F. and Avasthi, D.K. (2003) Thermoluminescence studies of Si+8 ion irradiated kyanite. Radiation Measurements, 36 (1-6 SP). pp. 653-655. ISSN 13504487

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Thermoluminescence (TL) of natural kyanite single crystals bombarded with 100 MeVSi+8 ions with fluences in the range 1Ã10 11-5Ã1013 ions/cm2 has been studied at room temperature (RT). Two TL glows, a medium one at â¼ 445 K and another intense one at â¼ 550 K are recorded in single crystals of kyanite. However, in the case of pelletized samples, similar TL glows but with peaks at â¼ 475 and 615 K, respectively, are recorded at a warming rate of 20 K/min. It is found that as the fluence of Si+8 ion increases, the TL intensity increases. It is also found that the characteristic TL glow peaks appear at higher temperature side in pelletized kyanite than those in crystalline ones, however, the glow peak temperatures remain steady in a given system irrespective of the ion dose. The enhancement in TL intensity and shifting of TL glow peaks to higher temperature side in pelletized kyanite samples are attributed to the particle nature of the phosphor and/or pressure-induced defects in the phosphor. © 2003 Published by Elsevier Ltd.

Item Type: Article
Additional Information: cited By 5
Uncontrolled Keywords: Heavy ions; Kyanite; Phosphors; Single crystals; Thermoluminescence, Ion dose, Ion bombardment
Subjects: Faculty of Science > Pure Sciences > Physics
Divisions: Jnana Bharathi / Central College Campus > Department of Physics
Depositing User: Mr. Kirana Kumar D
Date Deposited: 24 Feb 2016 06:07
Last Modified: 24 Feb 2016 06:07

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