Factors affecting the gamma response of TLD-700 chips in mixed-radiation fields

Journal Article · Wed Oct 01 04:00:00 EDT 1986 · Radiation Protection Management; (United States)

OSTI ID:5205158

Swaja, R E ^[1]; Scofield, P A ^[2]

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1. Health and Safety Research Div., Oak Ridge National Lab., Oak Ridge, TN (US)
2. Radiological and Occupational Health Dept., Univ. of Michigan, Ann Arbor, MI (US)

To determine the causes of gamma dose equivalent overestimates observed during mixed-radiation field personnel dosimetry intercomparisons at Oak Ridge National Laboratory, a study was performed to evaluate the effects of phosphor neutron sensitivity, badge materials, and phantoms on the response of TLD-700 chips. The results of the study presented in this paper indicate that even if a phosphor with relatively low neutron sensitivity is used, significant gamma overestimates can occur in mixed fields due to the interaction of the phosphor and badge materials with neutrons. Low energy photons can also contribute to gamma dose equivalent overestimates due to the increased sensitivity of the TLD-700 phosphor to photons with energies below about 100 keV.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5205158
• Journal Information: Radiation Protection Management; (United States), Journal Name: Radiation Protection Management; (United States) Vol. 3:5; ISSN 0740-0640; ISSN RPMAE
• Country of Publication: United States
• Language: English

Related Subjects

440102* -- Radiation Instrumentation-- Radiation Dosemeters
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BARYONS
BOSONS
DESIGN
DOSIMETRY
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY DEPENDENCE
ENERGY RANGE
FERMIONS
FUNCTIONS
GAMMA RADIATION
HADRONS
INTERFERENCE
IONIZING RADIATIONS
KEV RANGE
KEV RANGE 10-100
MASSLESS PARTICLES
NATIONAL ORGANIZATIONS
NEUTRONS
NUCLEONS
ORNL
PHOSPHORS
PHOTONS
RADIATIONS
RESPONSE FUNCTIONS
SENSITIVITY
THERMOLUMINESCENT DOSIMETRY
US AEC
US DOE
US ERDA
US ORGANIZATIONS