Essays about: "gamma-ray"

Showing result 16 - 20 of 81 essays containing the word gamma-ray.

1. 16. Detections of nuclear explosions by triple coincidence

   University essay from Uppsala universitet/Tillämpad kärnfysik

   Author : Marielle Akser; [2021]
   Keywords : Nuclear explosion; Radioxenon; Comprehensive Nuclear-Test-Ban Treaty; Triple coincidence; SAUNA;

   Abstract : When a nuclear explosion occurs certain radionuclides are emitted, notably xenon. Due to the fact that xenon is a noble gas, it is hard to contain and can therefore be detected far from the explosion site. There are four isotopes of xenon that are of interest in the detection of a nuclear explosion: 131mXe, 133mXe, 133Xe and 135Xe. READ MORE

3. 17. A gamma-ray study of a highly variable blazar : The Fermi-LAT analysis and the modeling of the FSRQ PKS 1510–089

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

   Author : Nadja Bollström; [2021]
   Keywords : active galactic nuclei; AGN; astrophysics; jet; PKS 1510-089; Fermi; external Compton model; gamma-rays;

   Abstract : The subject of this thesis is the analysis and modeling of the active galactic nucleus PKS 1510-089. The aim is to present a thorough background of active galactic nuclei combined with the analysis and modeling of a specific active galactic nucleus. The results will then be  linked to previous research and theories about active galactic nuclei. READ MORE

4. 18. Feasibility of Enhanced Geothermal Systems in the Precambrian crystalline basement in SW Scania, Sweden

   University essay from Lunds universitet/Geologiska institutionen

   Author : Hanna Kervall; [2021]
   Keywords : EGS; deep drilling; geothermal; petrology; petrophysical properties; Sveconorwegian; Earth and Environmental Sciences;

   Abstract : The ability to evaluate the geothermal potential at a depth of five to six kilometres in the crystalline bedrock is crucial for the EGS-technology to be utilized in the future. This work focuses primarily on presenting expected geological conditions at great depths in southwestern Scania. The study is based on information from E. READ MORE

5. 19. Development of a Neutron Activation Analysis station at the Lund Ion Beam Analysis Facility

   University essay from Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

   Author : Josephine Lindsey-Clark; [2021]
   Keywords : Neutron Activation Analysis; NAA; European Spallation Source; ESS; Lund Ion Beam Analysis Facility; LIBAF; Gamma-Ray Spectra; Physics and Astronomy;

   Abstract : This report outlines the first stages of the development of the Neutron Activation Analysis station at the Lund Ion Beam Analysis Facility in the Division of Nuclear Physics, Lund University. The motivation for this project is to use the Neutron Activation Analysis detection technique for environmental monitoring around the European Spallation Source, soon to come into operation. READ MORE

6. 20. Gamma-ray tracking using graph neural networks

   University essay from KTH/Fysik

   Author : Mikael Andersson; [2021]
   Keywords : Physics; Nuclear Physics; Detectors; Tracking; Neural Networks; GNN; Gamma-ray; Fysik; Kärnfysik; Detektorer; Tracking; Neurala Nät; GNN; Gammastrålning;

   Abstract : While there are existing methods of gamma ray-track reconstruction in specialized detectors such as AGATA, including backtracking and clustering, it is naturally of interest to diversify the portfolio of available tools to provide us viable alternatives. In this study some possibilities found in the field of machine learning were investigated, more specifically within the field of graph neural networks. READ MORE