Potential of Autoradiography to Detect Spatially Resolved Radiation Patterns in the Context of Trapped Charge Dating

Open access

Potential of Autoradiography to Detect Spatially Resolved Radiation Patterns in the Context of Trapped Charge Dating

Recent developments in optically stimulated luminescence (OSL) dating allow the determination of signals in increasingly smaller sample amounts. This has led to microdosimetry having a larger impact on equivalent dose (DE) distributions and therefore, detection and assessment of spatial distribution of radionuclides has become more important. This study demonstrates the application of autoradiography using imaging plates to determine spatially resolved radiation inhomogeneities in different types of samples. Qualitative evaluations of radiation inhomogeneity are carried out on unconsolidated sediments as well as on hard rock samples. While indicating some limitations of applicability, the results demonstrate that the method is an efficient tool to detect and document spatial variations in a sample's radiation field. It therefore provides a possibility to rapidly screen samples to check whether microdosimetry might affect the DE data.

Furthermore, an approach to calibrate autoradiographic images for quantitative use is suggested. Using pressed powder pellets of reference materials, a series of calibration images were exposed, from which a functional relation between specific sample activity and greyscale value in the autoradiographic image has been deduced. Testing the calibration on a set of 16 geological samples, of which their radionuclide content is known, shows a good correlation between specific activities calculated from the nuclide content and specific activities deduced from the autoradiographic images. These findings illustrate the potential of autoradiography with imaging plates to detect spatial distributions of radionuclides and to tackle certain aspects of the problem of microdosimetry in modern trapped charge dating.

If the inline PDF is not rendering correctly, you can download the PDF file here.

  • Amemiya Y and Miyahara J 1988. Imaging Plate illuminates many fields. Nature 336(6194): 89-90.

  • Bateman MD Frederick CD Jaiswal MK and Singhvi AK 2003. Investigations into the potential effects of pedoturbation on luminescence dating. Quaternary Science Reviews 22(10-13): 1169-1176.

  • Brennan BJ 2006. Variation of the alpha dose rate to grains in heterogeneous sediments. Radiation Measurements 41(7-8): 1026-1031.

  • Chen H Back NL Bartal T Beg FN Eder DC Link AJ MacPhee AG Ping Y Song PM Throop A and Van Woerkom L 2008. Absolute calibration of image plates for electrons at energy between 100 keV and 4 MeV. Review of Scientific Instruments 79(3).

  • Cole JM Nienstedt J Spataro G Rasbury ET Lanzirotti A Celestian AJ Nilsson M and Hanson GN 2003. Phosphor imaging as a tool for in situ mapping of ppm levels of uranium and thorium in rocks and minerals. Chemical Geology 193(1-2): 127-136.

  • Duller GAT Botter-Jensen L and Murray AS 2000. Optical dating of single sand-sized grains of quartz: sources of variability. Radiation Measurements 32(5-6): 453-457.

  • Gonzalez AL Li H Mitch M Tolk N and Duggan DM 2002. Energy response of an imaging plate exposed to standard beta sources. Applied Radiation and Isotopes 57(6): 875-882

  • Greilich S Glasmacher UA and Wagner GA 2002. Spatially resolved detection of luminescence: a unique tool for archaeochronometry. Naturwissenschaften 89(8): 371-375.

  • Greilich S Glasmacher UA and Wagner GA 2005. Optical dating of granitic stone surfaces. Archaeometry 47: 645-665.

  • Hareyama M Tsuchiya N and Takebe M 1998. Two-dimensional measurement of natural radioactivity of rocks by photostimulated luminescence. Water-Rock Interaction Rotterdam.

  • Hareyama M Tsuchiya N Takebe M and Chida T 2000. Twodimensional measurement of natural radioactivity of granitic rocks by photostimulated luminescence technique. Geochemical Journal 34(1): 1-9.

  • IAEA Report RL 148 1987. Preparation of Gamma-ray Spectrometry Reference Materials RGU-1 RGTh-1 and RGK-1. Report - IAEA/RL/148 Vienna

  • Lomax J Hilgers A Wopfner H Grün R Twidale CR and Radtke U 2003. The onset of dune formation in the Strzelecki Desert South Australia. Quaternary Science Reviews 22(10-13): 1067-1076

  • Lomax J Hilgers A Twidale CR Bourne JA and Radtke U 2007. Treatment of broad palaeodose distributions in OSL dating of dune sands from the western Murray Basin South Australia. Quaternary Geochronology 2(1-4): 51-56.

  • Matsuda T Arakawa S Koda K Torii S and Nakajima N 1993. New technical developments in the FCR9000. Fuji Computed Radiography Technical Review No 2 (Fuji Photo Film)

  • Mayya YS Morthekai P Murari MK and Singhvi AK 2006. Towards quantifying beta microdosimetric effects in single-grain quartz dose distribution. Radiation Measurements 41(7-8): 1032-1039.

  • Miyahara J 1989. The Imaging Plate: A new radiation image sensor. Chemistry Today No. 223: 29-36

  • Mori K and Hamaoka T 1994. IP Autoradiography System (BAS). Protein Nucleic Acid and Enzyme 39(11): 11.

  • Murray AS and Wintle AG 2000. Luminescence dating of quartz using an improved single-aliquot regenerative-dose protocol. Radiation Measurements 32(1): 57-73.

  • Nathan RP Thomas PJ Jain M Murray AS and Rhodes EJ 2003. Environmental dose rate heterogeneity of beta radiation and its implications for luminescence dating: Monte Carlo modelling and experimental validation. Radiation Measurements 37(4-5): 305-313

  • Olley JM Caitcheon GG and Roberts RG 1999. The origin of dose distributions in fluvial sediments and the prospect of dating single grains from fluvial deposits using optically stimulated luminescence. Radiation Measurements 30(2): 207-217.

  • Pickering R Kramers JD Partridge T Kodolanyi J and Pettke T 2009. Uranium-lead dating of calcite-aragonite layers in low-uranium speleothems from South Africa by MC-ICP-MS. Quaternary Geochronology accepted manuscript

  • Preusser F Blei A Graf H and Schlüchter C 2007. Luminescence dating of Wurmian (Weichselian) proglacial sediments from Switzerland: methodological aspects and stratigraphical conclusions. Boreas 36(2): 130-142.

  • Rowlands JA 2002. The physics of computed radiography. Physics in Medicine and Biology 47(23): R123-R166.

  • Salis M 2003. On the photo-stimulated luminescence of BaFBr: Eu+2 phosphors. Journal of Luminescence 104(1-2): 17-25

  • Schweizer S 2001. Physics and current understanding of X-ray storage phosphors. Physica Status Solidi a - Applied Research 187(2): 335-393.

  • Seibert JA 1997. Computed radiography: technology and quality assurance. In: Frey GD and Sprawls P eds The Expanding Role of Medical Physics in Diagnostic Imaging for AAPM. Madison: Advanced Medical Publishing. 37-83

  • Spaeth JM 2001. Recent developments in X-ray storage phosphor materials. Radiation Measurements 33(5): 527-532.

  • Takahashi K 2002. Progress in science and technology on photostimulable BaFX: Eu2+ (X = Cl Br I) and imaging plates. Journal of Luminescence 100(1-4): 307-315.

  • Tanaka KA Yabuuchi T Sato T Kodama R Kitagawa Y Takahashi T Ikeda T Honda Y and Okuda S 2005. Calibration of imaging plate for high energy electron spectrometer. Review of Scientific Instruments 76(1).

  • Thoms M 1996. The quantum efficiency of radiographic imaging with image plates. Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment 378(3): 598-611.

  • Tsuchiya N and Hareyama M 2001. Two-dimensional measurement of natural radioactivity of some Archean and Proterozoic rocks from South Africa. Memoirs. National Institute of Polar Research (Special Issue 55): 167-177.

  • Vandenberghe D Hossain SM De Corte F and Van den Haute P 2003. Investigations on the origin of the equivalent dose distribution in a Dutch coversand. Radiation Measurements 37(4-5): 433-439.

Journal information
Impact Factor

IMPACT FACTOR 2018: 0.865
5-year IMPACT FACTOR: 1.623

CiteScore 2018: 1.12

SCImago Journal Rank (SJR) 2018: 0.584
Source Normalized Impact per Paper (SNIP) 2018: 0.514

Cited By
All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 264 89 8
PDF Downloads 82 37 1