Photon and neutron dose discrimination using low pressure proportional counters with graphite and A150 walls
| Autor: | J Kyllönen, L Lindborg |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Photon
Monte Carlo method Proportional counter Radiation Radiation Dosage Sensitivity and Specificity Nuclear physics Radiation Protection Nuclear magnetic resonance Radiation Monitoring Materials Testing Pressure Radiology Nuclear Medicine and imaging Neutron Neutrons Sweden Bonner sphere Physics Photons Radiological and Ultrasound Technology Detector Public Health Environmental and Occupational Health Discriminant Analysis Reproducibility of Results Environmental Exposure Equipment Design General Medicine Neutron temperature Equipment Failure Analysis Computer-Aided Design Graphite |
| Zdroj: | Radiation Protection Dosimetry. 125:314-317 |
| ISSN: | 1742-3406 0144-8420 |
| DOI: | 10.1093/rpd/ncm162 |
| Popis: | A graphite-walled proportional counter with low neutron sensitivity was used in combination with a tissue-equivalent proportional counter (TEPC) to separate the photon and neutron components in mixed radiation fields. Monte Carlo (MCNP4C) simulations of the photon and neutron responses of the two detectors were done to obtain correction factors for the sensitivity differences. In an alternative method the radiation components were determined using constant-yD-values for typical photon and neutron energy distributions. The results show no significant difference between the two methods and the measured neutron dose-equivalent agrees within +/-50% with Bonner sphere determined values. The experimental data were obtained in measurement campaigns organised within the EVIDOS-project. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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