Pure LiF nanophosphors for high exposures of gamma-rays

Journal Article · Tue Jun 05 00:00:00 EDT 2012 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4710003· OSTI ID:22004089

Sharma, A K; Kumar, Satinder; Dogra, R; Lochab, S P; Kumar, Ravi ^[1]

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1. Beant College of Engineering and Technology, Gurdaspur (India)

Nanocrystalline lithium fluoride (LiF) phosphors have been prepared by the chemical co-precipitation method at different pH values (7.0, 8.0, 9.0 and 10.00). The formation of nanocrystalline structure has been confirmed by X-ray diffraction and transmission electron microscope. Thermoluminescence (TL) properties of LiF phosphors irradiated with gamma rays at different doses of 10 Gy - 70 kGy have been further studied. The analysis of TL glow curve revealed the existence of three well resolved glow peaks, first low temperature peak at around 82 deg. C, second at 125 deg. C and third one at higher temperature around 303 deg. C. The LiF nano-crystallites synthesized at 8.00 pH with maximum TL sensitivity at studied gamma doses ranging from threshold to high exposures are potential candidate for dosimetry applications.

• OSTI ID: 22004089
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1447; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
61 RADIATION PROTECTION AND DOSIMETRY
77 NANOSCIENCE AND NANOTECHNOLOGY
COPRECIPITATION
CRYSTALS
GAMMA RADIATION
GLOW CURVE
IRRADIATION
LITHIUM FLUORIDES
NANOSTRUCTURES
PH VALUE
PHOSPHORS
PHYSICAL RADIATION EFFECTS
SENSITIVITY
THERMOLUMINESCENCE
THERMOLUMINESCENT DOSIMETRY
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION