title: Optically stimulated luminescence in LiCaAlF6:Eu2+ phosphor.
abstract: Results on optically stimulated luminescence (OSL) in LiCaAlF6:Eu(2+) are reported. Continuous wave OSL signal as recorded using blue (470 nm) stimulation was found to be ~31% that of standard phosphor lithium magnesium phosphate. The rate of OSL depletion for standard phosphor lithium magnesium phosphate is only three times less as compared with that of LiCaAlF6:Eu(2+). Strong photoluminescence (PL) in the near ultraviolet region is observed for LiCaAlF6:Eu(2+) with the characteristic Eu(2+) emission at 369 nm for 254 nm excitation. The thermoluminescence (TL) glow peak for LiCaAlF6:Eu(2+) was observed at around 180°C. The glow peak was about six times more intense compared with the dosimetric peak of the well known thermoluminescence dosimetric (TLD) phosphor LiF-TLD 100. Thus this phosphor deserves much more attention than it has received until now and may be useful as a dosimetric material in radiation dosimetry.
authors.affiliation: Department of Physics, Nagpur University, Nagpur, 440033, India.
authors.forename: Y K
authors.initials: YK
authors.lastname: More
authors.affiliation: Department of Physics, K.D.K. College of Engineering, Nagpur, 440009, India.
authors.forename: S P
authors.initials: SP
authors.lastname: Wankhede
authors.affiliation: Department of Physics, Nagpur University, Nagpur, 440033, India.
authors.forename: S V
authors.initials: SV
authors.lastname: Moharil
authors.affiliation: Radiological Physics and Advisory Division, Bhabha Atomic Research Centre (BARC), Mumbai 85, India.
authors.forename: Munish
authors.initials: M
authors.lastname: Kumar
authors.affiliation: Radiological Physics and Advisory Division, Bhabha Atomic Research Centre (BARC), Mumbai 85, India.
authors.forename: M P
authors.initials: MP
authors.lastname: Chougaonkar
mesh_terms: D001610:Beta Particles; D005063:Europium / Q000737:chemistry*; D008094:Lithium / Q000737:chemistry; D049449:Luminescence; D049408:Luminescent Agents / Q000737:chemistry* / Q000528:radiation effects; D013324:Strontium / Q000737:chemistry; D013819:Thermoluminescent Dosimetry / Q000379:methods; D014961:X-Ray Diffraction
chemical_list: D049408:Luminescent Agents; D005063:Europium; D008094:Lithium; D013324:Strontium
keywords: dosimetry; lithium aluminum fluoride; optically stimulated luminescence (OSL); phosphor synthesis