Sökning: "radiation mechanism"

Visar resultat 6 - 10 av 162 avhandlingar innehållade orden radiation mechanism.

1. 6. Mechanism behind the development of radiation-induced cardiovascular effects

   Författare :Venkata Ramesh Yentrapalli; Siamak Haghdoost; Andrzej Wojcik; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; molekylärgenetik; Molecular Genetics;

   Sammanfattning : Epidemiological studies on acutely and chronically exposed individuals indicate that ionising radiation could be a risk factor for cardiovascular diseases. Experimental data regarding radiation-induced cardiovascular late effects are limited and biological mechanisms behind these late effects are still unclear. LÄS MER

3. 7. Simulation and analysis of radiation from runaway electrons

   Författare :Mathias Hoppe; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; tokamak; runaway electrons; synthetic diagnostics; fusion; synchrotron radiation; plasma physics; bremsstrahlung;

   Sammanfattning : Electron runaway constitutes one of the primary threats to future tokamak fusion reactors such as ITER. Successful prevention and mitigation of runaways relies on the development of theoretical models which accurately describe the dynamics of runaway electrons, and these models must in turn be validated in experiments. LÄS MER

4. 8. Photon induced fluorescence studies of molecules using synchrotron radiation

   Författare :Jesús Álvarez Ruiz; KTH; []
   Nyckelord :Fluorescence; synchrotron radiation; superexcited states; UV.;

   Sammanfattning : This Licentiate thesis presents research accomplished at theSection of Atomic and Molecular Physics at the Royal Instituteof Technology in Stockholm using photon induced fluorescencespectroscopy (PIFS) during the last two years.The main results presented are summarized:- Neutral photodissociation in CO was observed aftersynchrotron photon excitation in the range 19-26 eV bycollecting dispersed fluorescence from excited neutral C atoms. LÄS MER

5. 9. Performance and Radiation Hardness of the ATLAS/SCT Detector Module

   Författare :Lars Eklund; Richard Brenner; Sijbrand de Jong; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; High Energy Physics; Tracking; Silicon Microstrip Dectector; Radiation Hardness; Electrical Performance; Fysik; Physics; Fysik; högenergifysik; High Energy Physics;

   Sammanfattning : The ATLAS experiment is a general purpose experiment being constructed at the Large Hadron Collider (LHC) at CERN, Geneva. ATLAS is designed to exploit the full physics potential of LHC, in particular to study topics con- cerning the Higgs mechanism, Super-symmetry and CP violation. LÄS MER

7. 10. Photospheric emission in gamma ray bursts : Analysis and interpretation of observations made by the Fermi gamma ray space telescope

   Författare :Shabnam Iyyani; Felix Ryde; David Burrows; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; gamma ray bursts; photosphere; radiation mechanism; Theoretical Physics; teoretisk fysik;

   Sammanfattning : The large flashes of radiation that are observed in GRBs are generally believed to arise in a relativistic jetted outflow. This thesis addresses the question of how and where in the jet this radiation is produced. LÄS MER