Search for dissertations about: "Compton scattering"

Showing result 6 - 10 of 14 swedish dissertations containing the words Compton scattering.

  2. 6. Pre-Flight Development of the PoGOLite Pathfinder

    Author : Mózsi Kiss; Mark Pearce; Gottfried Kanbach; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Astroparticle physics; Astropartikelfysik;

    Abstract : The Polarized Gamma-ray Observer (PoGOLite) is a balloon-borne instrument that will measure gamma-ray polarization in the energy range 25-80 keV from astronomical sources such as pulsars, accretion discs and jets from active galacticnuclei. The two additional parameters provided by such observations, polarizationangle and degree, will allow these objects to be studied in a new way, providing information about their emission mechanisms and geometries. READ MORE

  4. 7. Applications of Pulse Shape Analysis Techniques for Segmented Planar Germanium Detectors

    Author : Anton Khaplanov; Bo Cederwall; Bo Jakobsson; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Position sensitive detectors; pulse shape analysis; germanium detectors; DESPEC; ; Nuclear physics; Kärnfysik;

    Abstract : The application of pulse shape analysis (PSA) and γ-ray tracking techniques has attracted a great deal of interest in the recent years in fields ranging from nuclear structure studies to medical imaging. These new data analysis methods add position sensitivity as well as directional information for the detected γ-rays to the excellent energy resolution of germanium detectors. READ MORE

  5. 8. PoGOLite : The Polarised Gamma-ray Observer

    Author : Cecilia Marini Bettolo; Mark Pearce; Christian Bohm; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik;

    Abstract : PoGOLite is a balloon-borne experiment which will study polarised soft gamma-ray emission from astrophysical targets in the 25 keV – 80 keV energy range by applying well-type phoswich detector technology. Polarised gamma-rays are expected from a wide variety of sources including rotation-powered pulsars, accreting black holes and neutron stars, and jet-dominated active galaxies. READ MORE

  6. 9. On Fast-Ion Transport and Burn Control in Tokamaks

    Author : Fredrik Wising; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Fast ions, generated by e.g. neutral beam injection (NBI), radio frequency (RF) heating or nuclear reactions, play an important role in all large tokamaks. Several issues related to fast ions and burning fusion plasmas are addressed in this thesis. READ MORE

  7. 10. Microphysical Conditioning of Gamma-Ray Burst Shocks

    Author : Jacob Trier Frederiksen; Claes Fransson; Åke Nordlund; Mikhail V. Medvedev; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; magnetic fields; particle acceleration; plasma instabilities; gamma-ray bursts; collisionless shocks; relativistic outflows; Astronomy and astrophysics; Astronomi och astrofysik; Astronomy; astronomi;

    Abstract : Gamma-Ray Bursts (GRBs) are believed to be connected with either collapse of massive stars or – in some cases – coalescing neutron stars, both of which cause extreme relativistic explosions observable from the entire Universe. GRBs produce rapid flashes of high energy radiation, extending up to 2MeV in photon energies: as much energy per photon as the rest mass of 4 electrons. READ MORE