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IJEMS Vol.16(3) [June 2009] >

Title: POSL studies on indigenously developed -Al2O3:C
Authors: Kulkarni, M S
Mishra, D R
Muthe, K P
Gupta, S K
Sharma, D N
Keywords: Optically stimulated luminescence
Issue Date: Jun-2009
Publisher: CSIR
Abstract: The pulsed optically stimulated luminescence (POSL) technique is known for its good signal to noise ratio, fast, and multiple readout features in radiation dosimetry in general and personnel monitoring in particular. Apart from this the POSL method also provides the estimation of the luminescence lifetime t which cannot be measured in CW-, LM OSL techniques. The POSL signal is recorded on the indigenously developed -Al2O3:C using 532 nm diode pumped solid state laser and high intensity blue (470 nm) light emitting diode cluster for different pulse widths (5–20 μs) and different repetition rates. The results are also compared with commercially available single crystal -Al2O3: C. The luminescence life time is estimated to be ≈ 35 ms is observed in both the samples. The POSL studies show the developed sample do not have long decay tail in time profile of POSL curve indicating suitability of the developed material for POSL routine dosimetry and qualitative difference of defect formation in developed sample as compared to those formed in the commercially available sample .
Page(s): 151-153
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Source:IJEMS Vol.16(3) [June 2009]

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