PMID- 26257084
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20160113
LR  - 20180303
IS  - 1872-9800 (Electronic)
IS  - 0969-8043 (Linking)
VI  - 105
DP  - 2015 Nov
TI  - Thermoluminescence signal in K-feldspar grains: Revisited.
PG  - 80-87
LID - S0969-8043(15)30137-8 [pii]
LID - 10.1016/j.apradiso.2015.07.057 [doi]
AB  - Recent work has shown that infrared stimulated luminescence (IRSL) signals in 
      sedimentary coarse-grain K-feldspars are derived mainly from high temperature 
      thermoluminescence (TL) peaks around 400 degrees C, and the fading components of the IRSL 
      signal can be preferentially removed by prior IR stimulation at relatively low 
      temperature. Considering the complexity of TL signal for very old samples, we may 
      choose non-fading components from K-feldspar TL signals using the combination of 
      optical and thermal activation methods. This paper examines a protocol of post-IR 
      isothermal TL (i.e. pIRITL) signal for sedimentary coarse-grain K-feldspars, 
      which results from isothermal TL measurements following elevated temperature IR 
      bleaching. We show that a sum of two exponential decay functions can fit well to 
      the pIRITL decay curves, and both the holding temperature for isothermal TL 
      measurements and the prior elevated temperature IR bleaching can affect greatly 
      the fast components of pIRITL signal. The dose response ranges of pIRITL signal 
      are wider than those of post-IR IRSL signals, but the relative high residual 
      pIRITL signal means that it is not appropriate for dating young samples. It is 
      expected that one isothermal TL signal for K-feldspar measured at ~400 degrees C 
      following IR bleaching at 290 degrees C (i.e. pIRITL400) is useful for dating very old 
      samples.
CI  - Copyright (c) 2015 Elsevier Ltd. All rights reserved.
FAU - Gong, Gelian
AU  - Gong G
AD  - State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of 
      Geochemistry, Chinese Academy of Sciences, 510640 Guangzhou, China; Nordic 
      Laboratory for Luminescence Dating, Department of Earth Sciences, Aarhus 
      University, Riso-DTU, DK-4000 Roskilde, Denmark.
FAU - Sun, Weidong
AU  - Sun W
AD  - Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of 
      Geochemistry, Chinese Academy of Sciences, 510640 Guangzhou, China.
FAU - Xu, Hongyun
AU  - Xu H
AD  - School of Computer Science and Engnieering, South China University of Technology, 
      510006 Guangzhou, China.
LA  - eng
PT  - Journal Article
DEP - 20150731
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
OTO - NOTNLM
OT  - IRSL
OT  - Isothermal TL
OT  - K-feldspar
OT  - Non-fading
EDAT- 2015/08/11 06:00
MHDA- 2015/08/11 06:01
CRDT- 2015/08/11 06:00
PHST- 2015/01/16 00:00 [received]
PHST- 2015/07/21 00:00 [revised]
PHST- 2015/07/30 00:00 [accepted]
PHST- 2015/08/11 06:00 [entrez]
PHST- 2015/08/11 06:00 [pubmed]
PHST- 2015/08/11 06:01 [medline]
AID - S0969-8043(15)30137-8 [pii]
AID - 10.1016/j.apradiso.2015.07.057 [doi]
PST - ppublish
SO  - Appl Radiat Isot. 2015 Nov;105:80-87. doi: 10.1016/j.apradiso.2015.07.057. Epub 
      2015 Jul 31.