Optical absorption and thermoluminescence of barytes single crystals irradiated with ?-rays

Autor:	K.V.K. Rao, A. V. Krishna Rao, R. K. Chaudhury
Rok vydání:	1984
Předmět:	chemistry.chemical_classification Materials science Mechanical Engineering Radiochemistry Analytical chemistry Thermoluminescence Wavelength chemistry Mechanics of Materials General Materials Science Irradiation Absorption (electromagnetic radiation) Single crystal Inorganic compound
Zdroj:	Journal of Materials Science. 19:1666-1671
ISSN:	1573-4803 0022-2461
DOI:	10.1007/bf00563064
Popis:	The optical absorption in the wavelength region 200 to 800 nm of barytes single crystals before and after γ-ray irradiation for different times has been measured. The thermoluminescence (TL) of the irradiated crystals has also been studied. γ-ray irradiation produces absorption bands at 590 and 370 nm possibly due to Ba+ and (SO4)− centres, respectively. Partial thermal bleaching experiments carried out on these absorption bands show that the absorption in both bands gradually decreases up to 200° C beyond which it falls rapidly. The γ-ray irradiated barytes exhibits TL peaks at 90, 180 and 208° C. An attempt is made to understand the results.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e5115989617769b758392bdc36b45f4b https://doi.org/10.1007/bf00563064 Zobrazit plný text záznamu Full text from SpringerLink