DOSIMETRY WITH SALT IN MIXED RADIATION FIELDS OF PHOTONS AND NEUTRONS
| Autor: | Ondřej Huml, Helena Malá, Peter Rubovič, Daniela Ekendahl, Pavel Žlebčík |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Luminescence
Materials science Optically stimulated luminescence Pilot Projects Sodium Chloride Radiation Radiation Dosage 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Dosimetry Radiology Nuclear Medicine and imaging Neutron Irradiation Radiometry Czech Republic Neutrons Photons Radiological and Ultrasound Technology business.industry Radiochemistry technology industry and agriculture Public Health Environmental and Occupational Health Gamma ray General Medicine Gamma Rays 030220 oncology & carcinogenesis Thermoluminescent Dosimetry lipids (amino acids peptides and proteins) Nuclear medicine business Neutron activation |
| Zdroj: | Radiation Protection Dosimetry. :1-4 |
| ISSN: | 1742-3406 0144-8420 |
| DOI: | 10.1093/rpd/ncx114 |
| Popis: | Salt (NaCl) represents a radiation sensitive material with a considerable potential for dosimetry in mixed radiation fields of photons and neutrons. In consequence of a gamma radiation exposure, it exhibits a strong luminescence signal following stimulation with blue light. Optically stimulated luminescence (OSL) technique can be used for measurement. Photon dose reconstruction can be done using so-called Single-Aliquot Regenerative-dose protocol. However, a part of OSL signal is caused by NaCl self-irradiation resulting from neutron reactions. This NaCl neutron sensitivity is comparable with neutron sensitivity of TLD-700. Neutron dose can be determined based on neutron activation of NaCl via reaction 23Na(n,γ)24Na. A relation between neutron dose and activity of 24Na can be derived. The total dose is thus determined based on the combination of results of OSL measurements and gamma activity measurements. Practical feasibility of this approach was experimentally verified for salt samples irradiated in a channel of a training reactor. |
| Databáze: | OpenAIRE |
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