A portable multi-purpose OSL reader for UV dosimetry at workplaces

Smetana, Florian; Hajek, Michael; Bergmann, Robert; Brusl, Helmut; Fugger, M.; Gratzl, Wolfgang; Kitz, Emmerich; Vana, N.

doi:10.1016/j.radmeas.2008.01.006

Cited by 16 publications

(7 citation statements)

References 6 publications

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“…From the 1960s, several instruments for TL dating have been developed and from 1985 for OSL dating [a review of such instruments is given by Botter‐Jensen (1997)]. Recently, portable OSL readers have been developed (Poolton et al ., 1994; Smetana et al ., 2008; Sanderson and Murphy, 2010). These instruments are designed for recording luminescence signalsthat are related to the equivalent dose.…”

Section: Introductionmentioning

confidence: 99%

Interpreting luminescence data from a portable OSL reader: three case studies in fluvial settings

Muñoz‐Salinas

Bishop

Sanderson

et al. 2010

Earth Surf Processes Landf

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Optically stimulated luminescence (OSL) is a technique that has been applied from the mid-1980s, mainly for sediment dating. The OSL technique is based on sample stimulation by light to determine the luminescence signal that is stored in the crystal lattices of sediment grains after deposition, burial by later sediment and subsequent exposure to ionizing radiation from radioactive elements in the surrounding sediment. In such sediment dating, two parameters are required: the equivalent dose (i.e. the luminescence signal stored in the grains), and the dose rate (i.e. the ionizing energy from a, b and g radiation emitted by naturally occurring radioisotopes in the deposit, plus the effects of cosmic radiation). In this research, the OSL technique is not used for dating. The study goal is to analyse only the luminescence signals (the total photon counts) in polymineral samples obtained after light stimulation in the blue (BLSL) and infrared (IRSL) wavelengths using a portable OSL reader designed and built at the Scottish Universities Environmental Research Centre (SUERC). Three fluvial case studies -from Cambodia, Australia and Mexico -are used to illustrate the geomorphological interpretations possible with the portable OSL reader data from sediments resulting from a range of different depositional processes. The case studies show that aspects of sediment's transport and depositional processes can be inferred from the portable OSL reader data, providing valuable insights into geomorphological history.

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Section: Introductionmentioning

confidence: 99%

Interpreting luminescence data from a portable OSL reader: three case studies in fluvial settings

Muñoz‐Salinas

Bishop

Sanderson

et al. 2010

Earth Surf Processes Landf

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“…Each of these instruments is discussed briefly below. A portable OSL reader developed by Smetana et al (2008) is largely intended for assessing exposure to UV radiation in work settings. Although the instrument could theoretically be adapted for assessing ionizing radiation for geological applications, it will not be examined in this paper.…”

Section: Basic Layout Of the Portable Luminescence Readermentioning

confidence: 99%

The potential of portable luminescence readers in geomorphological investigations: a review

Munyikwa

Kinnaird

Sanderson

2020

Earth Surf Processes Landf

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The development of functional portable optically stimulated luminescence (OSL) readers over the last decade has provided practitioners with the capability to acquire luminescence signals from geological materials relatively rapidly, which allows for expedient preliminary chronostratigraphic insight when working with complex depositional systems of late Quaternary age. Typically, when using the portable OSL reader, infrared (IR) or blue post‐IR OSL signals are acquired from bulk unprocessed materials, in contrast to regular luminescence dating, which is usually based on measurements on pure quartz or feldspar mineral separates, or on select silt‐sized polymineralic portions. To demonstrate the utility of portable OSL measurements, this paper outlines the basic features of portable OSL readers and their constraints. Subsequently, case studies in which the instrument has been used to elucidate cryptostratigraphic variations in sedimentary sequences for geomorphological applications are reviewed. The studies can generally be grouped into three main categories. The first includes studies where the variation of portable OSL reader luminescence signal intensities with depth are plotted to generate profiles that contextualize sediment stratigraphy. In the second group, portable OSL reader luminescence signal intensities are used to interpret sediment processes that shed light on depositional histories. In the last category, luminescence signals from the portable OSL reader are calibrated to approximate numerical burial ages of depositional units. The paper concludes with a discussion of possible future directions. © 2020 John Wiley & Sons, Ltd.

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“…The negative effects of UV radiation on humans, in particular on the skin and eyes [ 1 , 2 ], were the driving force for research on systems for monitoring the amount of absorbed UV doses. Many sensors and dosimeters for UV monitoring have been elaborated, such as photodiodes and actinometers [ 3 ], liquid crystal mixtures, solutions of photoluminescent dyes [ 4 , 5 ] and inorganic materials [ 6 , 7 , 8 , 9 , 10 ]. These systems are most often placed at an appropriate distance from the source of UV radiation and then, after the agreed time, the changes to the dosimeters are read.…”

Section: Introductionmentioning

confidence: 99%

NBT-Pluronic F-127 Hydrogels Printed on Flat Textiles as UV Radiation Sensors

et al. 2021

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This work reports on the surface-modified woven fabrics for use as UV radiation sensors. The cotton and polyamide fabrics were printed with radiochromic hydrogels using a screen-printing method. The hydrogels used as a printing paste were composed of water, poly(ethylene oxide)-block-poly(propylene oxide)-block-poly(ethylene oxide) (Pluronic F-127) as a gel matrix and nitro blue tetrazolium chloride as a radiation-sensitive compound. The development of the hydrogels’ colour occurs after exposure to UV radiation and its intensity increases with increasing absorbed dose. The features of the NBT-Pluronic F-127 radiochromic hydrogels and the fabrics printed with the hydrogels were examined using UV-Vis and reflectance spectrophotometry as well as scanning electron microscopy (SEM). The effects of NBT concentration and UV radiation type (UVA, UVB, UVC) on dose responses of the hydrogels and printed fabrics were also examined. The results obtained reveal that the fabrics printed with NBT-Pluronic F-127 hydrogels can be potentially useful as UV radiation sensors.

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A portable multi-purpose OSL reader for UV dosimetry at workplaces

Cited by 16 publications

References 6 publications

Interpreting luminescence data from a portable OSL reader: three case studies in fluvial settings

Interpreting luminescence data from a portable OSL reader: three case studies in fluvial settings

The potential of portable luminescence readers in geomorphological investigations: a review

NBT-Pluronic F-127 Hydrogels Printed on Flat Textiles as UV Radiation Sensors

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