Thermoluminescent Dosimeters for High-dose Applications

Sg, Gorbics; Fh, Attix; Kerris, K. G.

doi:10.1097/00004032-197311000-00005

Cited by 21 publications

(6 citation statements)

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“…A final comment needs to be added in order to emphasize that the use of the PMOS transistor with all elements grounded provides a simple dosimeter that can operate in the difficult to reach megarad range. By way of comparison, note that the response curves for the more commonly used TLDs (12) become double valued at doses greater than 50 to 100 krad. While the PMOS dosimeter results discussed are aimed at employment in space, a megarad dosimeter has many applications in other areas.…”

Section: Discussionmentioning

confidence: 99%

Design Criteria for a High-Dose MOS Dosimeter for Use in Space

August

1984

IEEE Trans. Nucl. Sci.

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In a previous paper a small, lightweight , low-power integrating dosimeter is described that is designed for use aboard satellites where the expected total dose is below 30 krad. The radiation-detecting sensors employed are radiation-soft, PMOS transistors. The dosimetric parameter utilized is the shift in threshold voltage, A VT. This voltage shift is related to the radiation dose absorbed, D, in the SiO2 gate oxide of the transistor. The relationship between A VT and D is determined with a calibrated Co-60 gamma-ray source. The present paper gives experimental results from which design criteria are derived that will extend the use of the dosimeter into the megarad range. The data show that the existing PMOS transistors can be operated in either of two ways. With a high positive gate bias during irradiation, and with some circuit modification, the PMOS transistors are useful up to about 50 krad. When the source, drain, and gate are grounded during irradiation, and subsequently read out normally, the devices are usable up to approximately 2.5 Mrad. The underlying device physics for these two modes of operation is discussed.

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Section: Discussionmentioning

confidence: 99%

Design Criteria for a High-Dose MOS Dosimeter for Use in Space

August

1984

IEEE Trans. Nucl. Sci.

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“…The tolerance of this material against high dose rates is experimentally verified for dose rates up to 10 9 Gy=s ¼ 1 mGy=ps [9].…”

Section: Methodsmentioning

confidence: 97%

A TLD-based ten channel system for the spectrometry of bremsstrahlung generated by laser-matter interaction

Horst

Fehrenbacher

Radon

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

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“…Thermoluminescent y dosimetry methods are based on the fact that irradiated TLD materials, when heated, emit light in proportion to the dose received by the material. Details associated with descriptions, mechanisms, and applications of TLD are readily available (Gorbics et al 1973;Horowitz 1984).…”

Section: Gamma Dosimetersmentioning

confidence: 99%

Nuclear Accident Dosimetry Intercomparison Studies

1989

Health Physics

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Twenty-two nuclear accident dosimetry intercomparison studies utilizing the fast-pulse Health Physics Research Reactor at the Oak Ridge National Laboratory have been conducted since 1965. These studies have provided a total of 62 different organizations a forum for discussion of criticality accident dosimetry, an opportunity to test their neutron and gamma-ray dosimetry systems under a variety of simulated criticality accident conditions, and the experience of comparing results with reference dose values as well as with the measured results obtained by others making measurements under identical conditions. Sixty-nine nuclear accidents (27 with unmoderated neutron energy spectra and 42 with eight different shielded spectra) have been simulated in the studies. Neutron doses were in the 0.2-8.5 Gy range and gamma doses in the 0.1-2.0 Gy range. A total of 2,289 dose measurements (1,311 neutron, 978 gamma) were made during the intercomparisons. The primary methods of neutron dosimetry were activation foils, thermoluminescent dosimeters, and blood sodium activation. The main methods of gamma dose measurement were thermoluminescent dosimeters, radiophotoluminescent glass, and film. About 68% of the neutron measurements met the accuracy guidelines (+/- 25%) and about 52% of the gamma measurements met the accuracy criterion (+/- 20%) for accident dosimetry.

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Thermoluminescent Dosimeters for High-dose Applications

Cited by 21 publications

References 0 publications

Design Criteria for a High-Dose MOS Dosimeter for Use in Space

Design Criteria for a High-Dose MOS Dosimeter for Use in Space

A TLD-based ten channel system for the spectrometry of bremsstrahlung generated by laser-matter interaction

Nuclear Accident Dosimetry Intercomparison Studies

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