Estimation of OSL trap parameters by optical “cleaning” — a critical study

• Autorzy: Kijek N. , Chruścińska A.
• Języki publikacji: EN

Abstrakty

EN

The so-called thermal “cleaning” applied in thermoluminescence analysis allows distinguishing TL signal originating from different traps of comparable thermal depths. Here, the detailed study on the suitability of a similar approach — which can be called optical “cleaning” — for the analysis of OSL process has been carried out by means of computer modelling. The optical “cleaning” is realized by short optical stimulation applied directly after irradiation. It turns out that this approach does not help to separate signals related to various traps having similar optical crosssection (OCS) values. For some sets of trap parameters, sufficiently good reconstruction of the trap optical cross-sections can be achieved by the analysis of the conventional OSL curve obtained directly after sample irradiation, while the OSL curve analysis after “cleaning” does not provide any additional data. For other cases the analysis of both curves with and without “cleaning” leads to optical crosssection values different from those assumed in the model, but just in such situations the optical “cleaning” can be helpful. The differences between the OSL components of the conventional curve and the one obtained after “cleaning” can be used as indicators of an incompatibility of the trap parameters obtained from the OSL analysis with their actual values.

Słowa kluczowe

EN

optically stimulated luminescence; optical cross sections; bleaching; simulations

• Wydawca: De Gruyter
• Czasopismo: Geochronometria
• Rocznik: 2014
• Tom: Vol. 41, no. 2
• Strony: 160--167
• Opis fizyczny: Bibliogr. 9 poz., wykr.

Twórcy

autor

Kijek N.

• Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziądzka 5, 87-100 Toruń

autor

Chruścińska A.

• Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziądzka 5, 87-100 Toruń

Bibliografia

• 1.Chruścińska A, 2007. Complex OSL signal and a trap independence assumption. Radiation Measurements 42(4–5): 727–730, DOI 10.1016/j.radmeas.2007.02.026.
• 2.Fasoli M, Vedda A, Moretti F, Chenus AC, Veronese I, Cantone MC, Nikl M, Yoshikawa A and Novoselov A, 2010. Effect of Eu and Pb doping on the dosimetric properties of LiCAF. Radiation Measurements 45(3–6): 556–558, DOI 10.1016/j.radmeas.2010.01.026.
• 3.Hsieh C-W, Tiu C-M and Li J-W, 2012. Nonlinear dose study of commercial Al2O3:C optically stimulated luminescence dosimeter with partial optical bleaching. CIC Express Letters, Part B: Applications 3: 615–620.Isik M, Bulur E and Gasanly NM, 2012. Low-temperature thermoluminescence in layered structured Ga0.75In0.25Se single crystals. Journal of Alloys and Compounds 545: 153–156, DOI 10.1016/j.jallcom.2012.08.015.
• 4.Kitis G and Pagonis V, 2008. Computerized curve deconvolution analysis for LM-OSL. Radiation Measurements 43(2–6): 737–741, DOI 10.1016/j.radmeas.2007.12.055.
• 5.Pagonis V, Mian S, Mellinger R and Chapman K, 2009. Thermoluminescence kinetic study of binary lead-silicate glasses. Journal of Luminescence 129(5): 570–577, DOI 10.1016/j.jlumin.2008.12.016.
• 6.Przegiętka KR and Chruścińska A, 2013. Analysis of optical bleaching of OSL signal in sediment quartz. Radiation Measurements 56: 257–261, DOI 10.1016/j.radmeas.2013.02.009.
• 7.Singarayer JS, Bailey RM and Rhodes EJ, 2000. Potential of the slow component of quartz OSL for age determination of sedimentary samples. Radiation Measurements 32(5–6): 873–880, DOI 10.1016/S1350-4487(00)00074-3.
• 8.Weckwerth P, Przegiętka KR, Chruścińska A, Woronko B and Oczkowski HL, 2011. Age and sedimentological features of fluvial series in the Toruń Basin and the Drwęca Valley (Poland). Geochronometria 38(4): 397–412, DOI 10.2478/s13386-011-0038-1.
• 9.Wintle AG, 2010. Future directions of luminescence dating of quartz. Geochronometria 37: 1–7, DOI 10.2478/v10003-010-0023-3.