Essays about: "Scintillation"

Showing result 6 - 10 of 36 essays containing the word Scintillation.

  1. 6. Environmental radiation measurements at Barsebäck nuclear power plant during the decommissioning phase

    University essay from Lunds universitet/Sjukhusfysikerutbildningen

    Author : Patrik Dahlström; [2022]
    Keywords : Medicine and Health Sciences;

    Abstract : Background and aim: The Barsebäck nuclear power plant (NPP) units ceased operations in 1999 and 2005. Now the NPP is in the phase of decommissioning, which is a complicated process that will take many years to complete. Radiological characterization of the surrounding area is a part of the decommissioning process. READ MORE

  3. 7. Spatial Variability in the Ionosphere and GNSS Signal Delays in the L-band: A Direct Comparison of In-Situ Satellite- and Swepos-Data

    University essay from Uppsala universitet/Institutionen för fysik och astronomi; Uppsala universitet/Institutet för rymdfysik, Uppsalaavdelningen

    Author : Oscar Suneson; [2021]
    Keywords : fysik; jonosfären; GNSS; GPS; astrofysik; navigationssystem; mätteknik;

    Abstract : It has been shown that ionospheric irregularities can disturb our GNSS (Global Navigation Satellite System) communication. This disturbance is caused by scintillation of the radio signals when they pass through the ionosphere, leading to lock-on difficulties or in worst case, a loss of position for the GNSS-receiver. READ MORE

  4. 8. Measuring the vertical muon intensity with the ALTO prototype at Linnaeus University

    University essay from Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

    Author : Magnus Norén; [2021]
    Keywords : Muon Intensity; ALTO; CoMET; Cosmic Rays; VHE Gamma Rays; Extensive Air Shower; Water Cherenkov Detector; Scintillation Detector; Monte Carlo Simulation; GEANT4;

    Abstract : ALTO is a project, currently in the research and development phase, with the goal of constructing a Very High Energy (VHE) gamma-ray observatory in the southern hemisphere. It will detect the particle content reaching the ground from the interactions of either VHE gamma rays or cosmic rays in the atmosphere known as extensive air showers. READ MORE

  5. 9. Calculating Minimum Detectable Activity for a moving scintillator detector using real-time speed measurement : Implementing a monitoring system to improve accuracy of surface contamination measurement systems

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Artur Amcoff; Oscar Persson; [2021]
    Keywords : Minimum Detectable Activity MDA ; Surface contamination; ISO 11929; Alpha α radiation; Beta β radiation; Detection limit; Counting efficiency; Minsta detekterbara aktivitet; Ytkontaminering; ISO 11929; Alfa α strålning; Beta β strålning; Detektionsgräns; Radioaktiv mäteffektivitet;

    Abstract : Surface contamination occurs in nuclear facilities, something that is important to detect easily and efficiently. Using today’s methods to detect nuclear surface contamination may cause certain inconsistencies as the human operator is solely trusted to keep the detector at the correct distance and move it at the correct speed. READ MORE

  6. 10. Noise Reduction of Scintillation Camera Images Using UNET: A Monte Carlo Simulation Approach

    University essay from Lunds universitet/Sjukhusfysikerutbildningen

    Author : Johanna Korpijärvi; [2021]
    Keywords : Medicine and Health Sciences;

    Abstract : Background The project aims to reduce the noise in planar 111-In projections with a machine learning model. Method Sixteen base phantoms were used to create 696 phantoms in XCAT. An anterior planar projection was simulated with 111-In and ten uptake curves for each phantom in SIMIND. READ MORE