Evaluation of thermoluminescent dosimeters (TLDs) of two different designs for beta particle and low energy photon dosimetry

Technical Report · Sun Nov 01 00:00:00 EST 1992

DOI:https://doi.org/10.2172/6567527· OSTI ID:6567527

Nugent, K. J.; Ahmed, A. B. ^[1]; Groer, P. G. ^[2]

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1. Oak Ridge National Lab., TN (United States)
2. Tennessee Univ., Knoxville, TN (United States). Dept. of Nuclear Engineering

The purpose of this research was to compare the response of the thermoluminescent dosimeters (TLDs) currently used at Martin Marietta Energy Systems with that of a newly designed TLD which is now under consideration. The new TLD consists of a thicker chip in element No. 3 and a thinner, more opaque mylar filter over this same element. The goals were to determine if the new (proposed) TLD would perform significantly different from the old (current) TLD when measuring dose equivalents from beta particles and low energy photons (x-rays) and to find out if changing from the old to the new design would require that modifications be made to the calibration factors currently used in the dose calculation algorithm. To accomplish these objectives, tests were performed using both types of dosimeters placed under identical conditions. Their responses were then compared and analyzed. It was concluded that the new TLDs would allow for the detection of lower levels of radiation and give more precise readouts at very low (i.e., background) levels in addition to the obvious advantages of the new design, such as, a thicker, more durable chip and a more opaque mylar. It was also determined that no adjustments to the calibration factors would be necessary in switching to the new design.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6567527
• Report Number(s): ORNL-6737; ON: DE93012506
• Country of Publication: United States
• Language: English

Related Subjects

61 RADIATION PROTECTION AND DOSIMETRY
BETA PARTICLES
THERMOLUMINESCENT DOSIMETRY
THERMOLUMINESCENT DOSEMETERS
COMPARATIVE EVALUATIONS
DESIGN
X RADIATION
ALGORITHMS
BACKGROUND RADIATION
CALIBRATION
CESIUM 137
COMPUTER CODES
DEPLETED URANIUM
DOSE EQUIVALENTS
MYLAR
ORNL
STATISTICAL DATA
THALLIUM 204
ACTINIDES
ALKALI METAL ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CESIUM ISOTOPES
CHARGED PARTICLES
DATA
DOSEMETERS
DOSIMETRY
ELECTROMAGNETIC RADIATION
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
ESTERS
EVALUATION
HEAVY NUCLEI
INFORMATION
INTERMEDIATE MASS NUCLEI
IONIZING RADIATIONS
ISOTOPES
LUMINESCENT DOSEMETERS
MATERIALS
MATHEMATICAL LOGIC
MEASURING INSTRUMENTS
METALS
NATIONAL ORGANIZATIONS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYESTERS
POLYMERS
RADIATIONS
RADIOISOTOPES
SYNTHETIC MATERIALS
THALLIUM ISOTOPES
URANIUM
US AEC
US DOE
US ERDA
US ORGANIZATIONS
YEARS LIVING RADIOISOTOPES
560101* - Biomedical Sciences
Applied Studies- Radiation Effects- Dosimetry & Monitoring- (1992-)