Essays about: "Radioactive source"

Showing result 21 - 25 of 40 essays containing the words Radioactive source.

1. 21. Development and Characterization of Parallel-Plate Avalanche Counters for Nuclear Physics Experiments

   University essay from Uppsala universitet/Tillämpad kärnfysik

   Author : Matthias Carlsson; [2018]
   Keywords : PPAC; Parallel-Plate Avalanche Counters; Gas Ionizing Detector; Gas Amplification; Characterization; NFS; Radioactive source; Am-241; Cf-252; Fission Fragments; Alpha Particles; Time Resolution; Angular Dependence; Gas Pressure Dependence; Townsend Coefficient; PPAC Design; Manufacture; Manufacturing; Mylar foil; Aluminium Evaporation;

   Abstract : Parallel-plate avalanche counters, PPACs, are commonly used to detect fission fragments. The PPAC detects them and mark (very accurately) the time of detection. Such measurements can be used to measure the neutron energy (via time-of-flight) to study neutron-induced fission. READ MORE

3. 22. Two-Dimensional Radiation Field Map of a Be-based Source

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

   Author : Henrik Söderhielm; [2017]
   Keywords : Nuclear Physics Particle Detectors Neutrons Gamma Rays European Spallation Source Lund University; Physics and Astronomy;

   Abstract : The aim of this project was to measure the profile of the radiation exiting an aperture of the Aquarium at the Source Testing Facility at the Division of Nuclear Physics at Lund University. So far, the outgoing beam of radiation at the aperture of the Aquarium has been assumed to be uniform. READ MORE

4. 23. Development and simulation of an active target detector with GEM foil readout

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

   Author : Elisabeth Rickert; [2017]
   Keywords : Physics and Astronomy;

   Abstract : At CERN, radioactive ion beams with energies of up to 10 MeV/u can be pro- duced by a newly commissioned post-accelerator, HIE-ISOLDE, which expands the possibilities for nuclear reaction studies. To investigate the collision properties of the ion beam with a target, an active gas–target detector is under development by the Reactions Group at the Nuclear Physics Division in Lund. READ MORE

5. 24. Is supernova iPTF15dtg powered by a magnetar?

   University essay from Stockholms universitet/Institutionen för astronomi

   Author : Stuart West; [2017]
   Keywords : supernova; magnetar; neutron star;

   Abstract : iPTF15dtg is a supernova (SN) Type Ic (lacking hydrogen and helium in its spectrum) with a light curve indicating that it is the result of a massive star explosion. Taddia et al. (2016) suggested that the progenitor star was a Wolf-Rayet (WR) star that previously suffered strong mass loss. READ MORE

6. 25. Analysis of ICRH of H and He-3 minorities in D and D-T plasmas in JET

   University essay from KTH/Skolan för elektro- och systemteknik (EES)

   Author : Kirill Amelin; [2016]
   Keywords : ;

   Abstract : Kärnfusion är en i praktiken outtömlig energikälla och en av kandidaterna till att ersätta fossila bränslen. Det är en ren energikälla som kan hjälpa oss att minska CO2 utsläpp utan att skapa långlivat radioaktivt avfall. READ MORE