Thermoluminescence dosimetry in mixed neutron/gamma radiation beam
| Autor: | J. B. Farr, S. Hunter, Mark Yudelev |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Materials science
Astrophysics::High Energy Astrophysical Phenomena Physics::Medical Physics Transducers Boron Neutron Capture Therapy Risk Assessment Sensitivity and Specificity Standard deviation Optics Radiation Protection Linear regression Relative biological effectiveness Dosimetry Humans Radiology Nuclear Medicine and imaging Neutron Neutrons Radiation Miniaturization Radiological and Ultrasound Technology business.industry Radiotherapy Planning Computer-Assisted Detector Public Health Environmental and Occupational Health Reproducibility of Results Radiotherapy Dosage General Medicine Equipment Design Neutron radiation Equipment Failure Analysis Gamma Rays Body Burden Thermoluminescent Dosimetry Nuclear medicine business Beam (structure) Relative Biological Effectiveness |
| Zdroj: | Radiation protection dosimetry. 110(1-4) |
| ISSN: | 0144-8420 |
| Popis: | Miniature CaF2:Tm (TLD-300) were adopted for dosimetry in a mixed neutron/gamma beam produced by the Detroit superconducting cyclotron. A method utilizing the linear relationship between the ratios of the areas under the low and high temperature peaks of the glow curve and the ratios of gamma dose to total dose (Dgamma/DT) in d(48.5)+Be fast-neutron beam was applied for both the gamma component and the total dose measurements. The detectors were grouped based on their response to uniform 60Co dose. Within each group the ratio of the peak areas of the glow curve demonstrated uniformity and stability better than 1.5% (one standard deviation). The parameters of the linear regression between the fractional gamma component in the neutron beam and the ratio of peak areas were derived from measurements at locations with predetermined Dgamma/DT. The method was applied to measure the transmission through the existing multi-rod and newly designed multi-leaf collimators. |
| Databáze: | OpenAIRE |
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