Pulsed Optically Stimulated Luminescence Dosimetry Using Alpha-Al2O3:C

McKeever, S.W.S.; Akselrod, M.S.; Markey, B.G.

doi:10.1093/oxfordjournals.rpd.a031639

Cited by 150 publications

(73 citation statements)

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“…The OSL beta dose response for this material has been shown to be linear up to about 10 Gy (McKeever et al, 1996) and no measurable fading of the OSL signal from Al 2 O 3 :C at room temperature has been detected over 100 days (Bøtter-Jensen et al, 1997) In addition, the regenerated OSL signal varies <1.7%…”

Section: Transfer Standardmentioning

confidence: 99%

Dose Rate Calibration of a Commercial Beta-Particle Irradiator Used in Archeological and Geological Dating

Bernal¹

2004

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Section: Transfer Standardmentioning

confidence: 99%

Dose Rate Calibration of a Commercial Beta-Particle Irradiator Used in Archeological and Geological Dating

Bernal¹

2004

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“…Although developed for use as a thermoluminescent dosimeter (TLD) 1 and an exoelectron dosimeter, 2 its greatest commercial success has come from the exploitation of its Optically Stimulated Luminescence (OSL) properties. 3,4 The subsurface monitor is based on an aluminum oxide fiber, a chemically inert and physically stable material that is sometimes referenced as sapphire. 5 It is expected that the sensor will not raise any environmental or regulatory concerns because of the inertness of the material and its small volume.…”

Section: Description Of the Technologymentioning

confidence: 99%

“…In order to compare these numbers to a soil release level in pCi/g, it is necessary to multiply the release level by the soil density. Therefore, measuring a soil release level of 50 pCi/g in a solid with a density of 0.5 g/cm 3 …”

Section: Figure 6 Data Used To Determine the Minimum Detectable Dosementioning

confidence: 99%

In-Situ, Long-Term Monitoring System for Radioactive Contaminants

Durham¹,

McKeever²,

Akselrod³

2002

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This report presents the results of the first phase of the project entitled "In-situ, Long-term Monitoring System for Radioactive Contaminants." Phase one of this effort included four objectives, each with specific success criteria.The first objective was to produce dosimetry grade fibers and rods of aluminum oxide. The success criterion for this milestone was the production of aluminum oxide rods and fibers that have a minimum measurable dose (MMD) of 100 mrem or less. This milestone was completed and the MMD for the rods was measured to be 1.53 mrem. Based on the MMD, the ability of the sensor to measure 137 The second objective was to construct a prototype sensor (dosimeter and fiber optic channel). There were three success criteria for this milestone: 1) Perform measurements with the sensor for both gamma and beta radiation with a standard deviation of 10% or less; 2) Demonstrate the ability of the sensor to discriminate between gamma and beta radiation; and 3) Obtain similar or relatable results for differing lengths of fiber optic cable. These milestones were met. The sensor was able to measure gamma radiation repeatedly with a standard deviation of 3.15% and beta radiation with a standard deviation of 2.85%. Data is presented that demonstrates that an end cap can be used to discriminate between beta plus gamma radiation using beta radiation from a 90 Sr/ 90 Y source) and gamma radiation alone. It is shown that some amount of attenuation occurs in longer fiber optic cables, but it is unclear if the attenuation is due to poor alignment of the dosimeter and the cable. This issue will be investigated further when more dosimeters are available so that the dosimeters can be permanently attached to the longer cables.The third objective was to identify a demonstration site. The success criterion for this milestone was to obtain a written agreement from a DOE site to host the demonstration of the monitor during the third phase. Because of uncertainties in funding of the second and third phases of this effort, a written agreement was not obtained. Instead, verbal agreements were reached with both Hanford and the Nevada Test Site. It is believed that the verbal agreements meet the intent of the objective.The final objective was to prepare the Draft Phase I Topical Report. The success criterion for this milestone was to have the report accepted by NETL. It is anticipated that this objective will be met.

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“…Taking part in different space research programs, the SCK·CEN enforced the laboratory to enlarge the number of detector types to optimize the measurement of absorbed and equivalent doses in the radiation environment found in the International Space Station [1].…”

Section: Introductionmentioning

confidence: 99%

External and Environmental Radiation Dosimetry with Optically Stimulated Luminescent Detection Device Developed at the SCK.CEN

Boons¹,

Iersel²,

Genicot³

2012

WJNST

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The laboratory of Radiation Dosimetry and Calibration of the Belgian Nuclear Research Centre (SCK·CEN) is using thermoluminescence dosimetry for more than thirty years for routine measurements and for R & D investigations. In 2002, it has developed an experimental device based on the optically stimulated luminescence (OSL) technique. This device is working with AL 2 O 3 :C crystals stimulated by the green line (488 nm) emitted by a 150 mW argon laser. This paper describes this device, its characteristics, some applications in space dosimetry and the R & D works initiated in this field during the next few years.

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Pulsed Optically Stimulated Luminescence Dosimetry Using Alpha-Al2O3:C

Cited by 150 publications

References 0 publications

Dose Rate Calibration of a Commercial Beta-Particle Irradiator Used in Archeological and Geological Dating

Dose Rate Calibration of a Commercial Beta-Particle Irradiator Used in Archeological and Geological Dating

In-Situ, Long-Term Monitoring System for Radioactive Contaminants

External and Environmental Radiation Dosimetry with Optically Stimulated Luminescent Detection Device Developed at the SCK.CEN

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