The inverse-square gamma-irradiation anomaly of the nuclear enterprise 2575 large-volume ionisation chamber
| Autor: | Frédéric Tessier, Alex F. Bielajew, Islam El Gamal |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Physics
Photons Range (particle radiation) Radiation Photon Radiological and Ultrasound Technology Monte Carlo method Public Health Environmental and Occupational Health General Medicine Models Theoretical Electromagnetic radiation Particle detector Computational physics Gamma Rays Ionization Calibration Measuring instrument Humans Computer Simulation Radiology Nuclear Medicine and imaging Anomaly (physics) Radiometry Monte Carlo Method |
| DOI: | 10.1093/rpd/ncu306 |
| Popis: | The Nuclear Enterprises (Model 2575) 600 cc ionisation chamber is examined to discover the cause of its anomalous behaviour in inverse-square stability measurements. Measurements and Monte Carlo calculations are employed to isolate the cause of the discrepancy. It is found that most of the effect is due to the long photon attenuation pathlengths in the long side wall of the instrument. A phenomenological procedure, based on measurements, is proposed to correct for the anomaly. The procedure results in inverse-square stability to within 0.5% over a range of 1-7 meters. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|