Sökning: "x-ray flux"

Visar resultat 16 - 20 av 54 avhandlingar innehållade orden x-ray flux.

1. 16. The zinc group tungstate scintillators : growth, structures and properties

   Författare :Magnus Åsberg Dahlborg; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; scintillators; CdWO4; single crystals; HgWO4; flux growth; X-ray diffraction; AnWO4; neutron diffraction; tungstates;

   Sammanfattning : .... LÄS MER

3. 17. Tungstate Scintillators Growth, Structures and Properties

   Författare :Magnus Åsberg Dahlborg; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; scintillators; single crystals; ZnWO4; HgWO4; neutron powder diffraction; X-ray diffraction; CdWO4; flux growth; tungstates;

   Sammanfattning : Tungstate crystals are well-known scintillators, which can be used as detector material for high-energy radiation and are often chosen as references in measurements on new luminescent materials. For measurements of excitation and relaxation properties, single crystals are desirable. LÄS MER

4. 18. Interpretation of gamma-ray burst X-ray and optical afterglow emission : From the central engine to the circumburst interaction

   Författare :Liang Li; Felix Ryde; Fawad Hassan; Kim Page; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; gamma-ray bursts; central engine; afterglow; teoretisk fysik; Theoretical Physics;

   Sammanfattning : Gamma-ray bursts are the largest electromagnetic explosions known to happen in the Universe and are associated with the collapse of stellar progenitors into blackholes. After an energetic prompt emission phase, lasting typically less than a minute and emitted in the gamma-rays, a long-lived afterglow phase starts. LÄS MER

5. 19. Optical Studies For Synchrotron Radiation Beamlines

   Författare :Walan Grizolli; Lunds universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Synchrotron Radiation; Optics; X-ray Optics; Beamline; Polarimetry; Coherence; Storage Rings; Diffraction Limited Storage Rings;

   Sammanfattning : Synchrotron radiation sources have greatly contributed to the progress in many fields of science. The development of the storage ring technologies has made possible to obtain very low emittance electron beams, which together with the use of undulators allow guiding a very high photon flux into a very small spot required by the experiments. LÄS MER

7. 20. Time-Resolved and High-Energy Synchrotron Radiation Crystallography using X-ray Area Detectors: Calibration and Applications

   Författare :Olof Svensson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : This thesis relates to characterisation and calibration techniques for X-ray area detectors with applications in time-resolved and high-energy X-ray crystallography. X-ray crystallography is an interdisciplinary science with important applications in many fields, e.g. chemistry, physics, biology, geology and materials science. LÄS MER