Essays about: "Gamma-radiation"

Showing result 1 - 5 of 21 essays containing the word Gamma-radiation.

1. 1. Simulations of stray radiation in the European XFEL undulators with the Geant4 toolkit

   University essay from Stockholms universitet/Fysikum

   Author : Guillermo Lopez Basurco; [2022]
   Keywords : Geant4; Monte Carlo simulations; XFEL undulators; gamma radiation flux;

   Abstract : The European XFEL is an X-ray free electron laser research facility that generates ultrashort, high intensity flashes. Three SASE undulator systems are made of undulator segments and intersection components. READ MORE

3. 2. Modeling The Temperature of a Calorimeter at Clab : Considering a Thermodynamic Model of The Temperature Evolution of The Calorimeter System 251

   University essay from Uppsala universitet/Tillämpad kärnfysik

   Author : Johannes Ekman; [2021]
   Keywords : calorimetry; calorimeter; System 251; temperature evolution; spent nuclear fuel; SNF; MATLAB; SERPENT2; Clab; nuclear decay heat; calibration measurements; thermodynamic model; gamma escape fraction; mass correction; calibration measurements; electric heater; three component system; system of ordinary differential equations; eigenvalues; eigenvalue estimation; temperature increase method; polynomial approximation of mass correction; sensitivity of mass correction; calorimeter heat capacity; mass correction uncertainty; calorimeter calibration curve; monoenergetic gamma spectrum; curve fitting of temperature as function of time;

   Abstract : It is important to know the heat generated due to nuclear decay in the final repository for spent nuclear fuel. In Sweden, the heating powers generated in spent nuclear fuels are currently measured in the calorimeter System 251 at the Clab facility, Oskarshamn. READ MORE

4. 3. Inversion of SkyTEM Data Based on Geophysical Logging Results for Groundwater Exploration in Örebro, Sweden

   University essay from Luleå tekniska universitet/Geovetenskap och miljöteknik

   Author : Andrée Kindlund; [2021]
   Keywords : SkyTEM; hydrogeophysics; geophysical logging; A priori; groundwater exploration;

   Abstract : Declining groundwater tables threatens several municipalities in Sweden which drinking water is collected from. To ensure a sound drinking water supply, the Geological Survey of Sweden has initiated a groundwater exploration plan. READ MORE

5. 4. Oxygen Reduction Catalysts in Alkaline Electrolyte

   University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

   Author : Avital Cherednik; Anders Abrahamsson; Bjarne Falk; [2020]
   Keywords : Alkaline Fuel Cells; Catalyst; Silver; Nano Particles; Radiolysis; Gamma-radiation;

   Abstract : Alkaline fuel cells are a promising technology, with their sturdy design and many applications they are held back mostly by their cost. By introducing a catalyst, the activation energy of the cell can be reduced to an overcomable amount. READ MORE

6. 5. Gamma Radiation-Induced Synthesis of Cerium Oxide Mesocrystals

   University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

   Author : Michel Goy; [2019]
   Keywords : ;

   Abstract : Nanoparticles of cerium dioxide was synthesized by gamma irradiation of aqueous solutions containing CeCl3 and CeBr3. ICP-OES was used to determine the precipitation yield. X-ray powder diffraction and transmission electron microscope were used to characterize the products. READ MORE