A new highly sensitive low-Z LiF-based OSL phosphor for radiation dosimetry.
A new low-Z lithium fluoride-based optical stimulated luminescent (OSL) phosphor is developed. The phosphor shows good OSL properties, and its sensitivity is comparable with that of the commercial Al2O3:C (Landauer, Inc.) phosphor. For the luminescence averaged over initial 3 s, blue stimulated luminescence (BSL) and green stimulated luminescence (GSL) sensitivities were found to be 0.27 and 4 times, respectively, than that of Al2O3:C (Landauer, Inc.). The BSL decay is fast, and the whole signal decays within 3 s; the GSL decay is relatively slow, and the signal decays in 25 s. The fast decay, good sensitivity, good linearity and its near tissue equivalence (Zeff ∼8.14) will make this phosphor suitable for radiation dosimetry particularly in personnel as well as in medical dosimetry.
Institute of Science, R.T. Road Civil Lines, Nagpur, India rvapatil@yahoo.com.
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Patil
Institute of Science, R.T. Road Civil Lines, Nagpur, India.
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Gaikwad
Institute of Science, R.T. Road Civil Lines, Nagpur, India.
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More
Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai, India.
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Kulkarni
RPAD, BARC, Mumbai, India.
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Bhatt
R.T.M. Nagpur University, Nagpur, India.
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Moharil
D000537:Aluminum Oxide / Q000737:chemistry*; D004867:Equipment Design; D005459:Fluorides / Q000737:chemistry*; D008027:Light; D018020:Lithium Compounds / Q000737:chemistry*; D008163:Luminescent Measurements / Q000379:methods*; D008422:Materials Testing; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods*
D018020:Lithium Compounds; C027651:lithium fluoride; D000537:Aluminum Oxide; D005459:Fluorides