PMID- 31525596
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20191113
LR  - 20191113
IS  - 1872-9800 (Electronic)
IS  - 0969-8043 (Linking)
VI  - 154
DP  - 2019 Dec
TI  - Thermoluminescence and infrared light stimulated luminescence of limestone 
      (CaCO(3)) and its dosimetric features.
PG  - 108888
LID - S0969-8043(19)30872-3 [pii]
LID - 10.1016/j.apradiso.2019.108888 [doi]
AB  - Thermoluminescence (TL) and infrared light stimulated luminescence (IRSL) of 
      limestone (CaCO(3)) collected from the Mawsmai Cave, India is reported. 
      Structural and compositional analyses show that the sample has a rhombohedral 
      crystal structure and contains 33.45% of CaO. TL measured at 1  degrees C/s from a sample 
      irradiated to 600 Gy produces three composite glow peaks P1, P2 and P3 at 92, 165 
      and 239  degrees C respectively. The nature of the glow peaks is suggestive of the 
      presence of a continuum trap distribution with activation energy between 0.40 eV 
      and 1.12 eV. As regards to dose response, the TL intensity of P1 increases at a 
      uniform rate with dose between 10 and 1000 Gy. Interestingly, the intensity of P3 
      increases with dose through two uniform regions, one within 10-100 Gy and the 
      other between 100 and 1000 Gy. The IRSL measurement produces ill-shaped decay 
      curves. The IRSL intensity also increases with dose at two different uniform 
      rates within 10-100 Gy and 100-1000 Gy. Residual TL recorded after each IRSL 
      measurement shows similar dose response as that under the conventional TL. 
      Regarding fading, P1 fades by 88% and P3 by 14% within 12 h of irradiation.
CI  - Copyright (c) 2019 Elsevier Ltd. All rights reserved.
FAU - Kalita, J M
AU  - Kalita JM
AD  - Department of Physics and Electronics, Rhodes University, P O Box 94, 
      Grahamstown, 6140, South Africa; Department of Physics, Assam Down Town 
      University, Guwahati, 781026, India. Electronic address: jitukalita09@gmail.com.
FAU - Chithambo, M L
AU  - Chithambo ML
AD  - Department of Physics and Electronics, Rhodes University, P O Box 94, 
      Grahamstown, 6140, South Africa.
LA  - eng
PT  - Journal Article
DEP - 20190906
PL  - England
TA  - Appl Radiat Isot
JT  - Applied radiation and isotopes : including data, instrumentation and methods for 
      use in agriculture, industry and medicine
JID - 9306253
SB  - IM
OTO - NOTNLM
OT  - Infrared light stimulated luminescence (IRSL)
OT  - Limestone (CaCO(3))
OT  - Radiation dosimetry
OT  - Thermoluminescence (TL)
EDAT- 2019/09/17 06:00
MHDA- 2019/09/17 06:01
CRDT- 2019/09/17 06:00
PHST- 2019/08/08 00:00 [received]
PHST- 2019/09/06 00:00 [revised]
PHST- 2019/09/06 00:00 [accepted]
PHST- 2019/09/17 06:00 [pubmed]
PHST- 2019/09/17 06:01 [medline]
PHST- 2019/09/17 06:00 [entrez]
AID - S0969-8043(19)30872-3 [pii]
AID - 10.1016/j.apradiso.2019.108888 [doi]
PST - ppublish
SO  - Appl Radiat Isot. 2019 Dec;154:108888. doi: 10.1016/j.apradiso.2019.108888. Epub 
      2019 Sep 6.