Sökning: "mobile gamma spectrometry"
Hittade 5 avhandlingar innehållade orden mobile gamma spectrometry.
1. On-line Mobile in situ Gamma Spectrometry
Sammanfattning : Mobile in situ gamma spectrometry is an important instrument in the emergency preparedness for nuclear accidents. This work contributes through the development of strategies and analysis methods for two applications: an on-line search for gamma-emitting orphan sources and on-line estimation of the depth distribution of 137Cs. LÄS MER
2. Assessment of mobile radiometry data in radiological emergencies using Bayesian statistical methods
Sammanfattning : Nuclear technology and the use of radiation sources have been extensively adopted in the modern world. Despite that, a number of radiological accidents, significantly affecting population and the environment, has happened. Few of the most known are accidents in Chernobyl and Fukushima nuclear power plants. LÄS MER
3. Orphan source detection in mobile gamma-ray spectrometry - Improved techniques for background assessment
Sammanfattning : Hazardous radioactive sources out of regulatory control are referred to as orphan sources. Focussing on gamma-emitting orphan sources, this thesis describes methods that can be used in mobile gamma-ray spectrometry to perform real-time discrimination between an actual source signal and the signal due to the natural radiation background. LÄS MER
4. Mobile gamma spectrometry: Development and optimisation of methods for locating and mapping lost radioactive sources
Sammanfattning : .... LÄS MER
5. Methods for localizing and quantifying radionuclide sources and deposition using in situ gamma spectrometry : Critical review of the peak-to-valley method based on experimental studies and applications in Georgia and Japan
Sammanfattning : This thesis describes investigations made on mobile and stationary gammaspectrometry made both under laboratory conditions and in situ. The objective hasbeen to identify and quantify radionuclides in the form of point sources,contamination and widespread deposition in situations where the measurementgeometry is not known beforehand. LÄS MER