EPR dosimetry in a mixed neutron and gamma radiation field.
Suitability of Electron Paramagnetic Resonance (EPR) spectroscopy for criticality dosimetry was evaluated for tooth enamel, mannose and alanine pellets during the 'international intercomparison of criticality dosimetry techniques' at the SILENE reactor held in Valduc in June 2002, France. These three materials were irradiated in neutron and gamma-ray fields of various relative intensities and spectral distributions in order to evaluate their neutron sensitivity. The neutron response was found to be around 10% for tooth enamel, 45% for mannose and between 40 and 90% for alanine pellets according their type. According to the IAEA recommendations on the early estimate of criticality accident absorbed dose, analyzed results show the EPR potentiality and complementarity with regular criticality techniques.
Trompier
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F
Institute for Radiological Protection and Nuclear Safety, F-92262 Fontenay aux Roses, France. francois.trompier@irsn.fr
Fattibene
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P
Tikunov
D
D
Bartolotta
A
A
Carosi
A
A
Doca
M C
MC
D001822:Body Burden; D004578:Electron Spin Resonance Spectroscopy / Q000379:methods* / Q000592:standards; D005602:France; D005720:Gamma Rays; D006801:Humans; D009502:Neutrons; D009688:Nuclear Reactors; D015588:Observer Variation; D011785:Quality Assurance, Health Care / Q000379:methods; D011829:Radiation Dosage; D011835:Radiation Protection / Q000379:methods* / Q000592:standards; D018788:Radioactive Hazard Release; D011874:Radiometry / Q000379:methods* / Q000592:standards; D012015:Reference Standards; D012062:Relative Biological Effectiveness; D015203:Reproducibility of Results; D018570:Risk Assessment / Q000379:methods* / Q000592:standards; D012307:Risk Factors; D017751:Safety Management / Q000379:methods; D012680:Sensitivity and Specificity