Small Commercial Dosimeters for Cosmic Ray Measurements Onboard Aircraft
نویسندگان
چکیده
منابع مشابه
Methods for estimating radiation doses received by commercial aircrew.
INTRODUCTION Radiation doses received onboard aircraft are monitored in Europe to protect aircrew in accordance with a European Union directive. The French Aviation Authorities have developed a system called SIEVERT, using calculation codes to monitor effective radiation doses. METHODS For the galactic cosmic ray component, a 3-D world map of effective dose rates is computed using available o...
متن کاملEstimation of Cosmic Ray Dose in Airplanes with Pocket Dosimeters
INTRODUCTION For the purpose of dose control of aircrew, many dose measurements have been conducted in airplanes. In IRPA-9, we had reported data mainly obtained with a NaI(Tl) scintillation spectrometer(1). In the present study, however, analyses were done on data of pocket dosimeters (Silicon detectors: Aloka PDM-101 for ionizing components and PDM-303 for neutrons). As the pocket dosimeters ...
متن کاملProtection of Instrument Control Computers against Soft and Hard Errors and Cosmic Ray Effects
Off-the shelf commercial microprocessors, if properly selected and used, provide costeffective, low weight and low power engineering solutions for space applications. Noninterruptable and 100 % error free operation is not a mandatory requirement for scientific instrument control. Thus, hardware overhead in terms of weight, power consumption and component cost may be significantly reduced. This ...
متن کاملDosimetric Evaluation of Linac Photon Small Fields using MAGIC Polymer Gels
Introduction: In radiotherapy, methods of treatment planning are becoming increasingly more complicated. This requires verification of the doses delivered to increasingly smaller and more precise regions. Radiotherapy techniques are continuously employing smaller and smaller field sizes to deliver tighter radiation doses with higher therapeutic ratios, generating interest among researchers to p...
متن کاملThermoluminescent Detectors for Neutron Dosimetry at High Altitudes
At high altitudes in the Earth’s atmosphere cosmic-ray induced neutrons become the dominant contributors to the biologically relevant dose equivalent. Depending on the geomagnetic latitude and the solar activity cycle, neutron dose onboard aircraft amounts to about 50 to 70 % of the overall dose equivalent. Neutron detection in complexly mixed radiation environments by means of active, i.e. pow...
متن کامل