Search for dissertations about: "x ray absorption spectroscopy"

Showing result 1 - 5 of 218 swedish dissertations containing the words x ray absorption spectroscopy.

2. 1. Photon Counting X-ray Detector Systems

   Author : Börje Norlin; Christer Fröjdh; Hans-Erik Nilsson; Kenway Smith; Mittuniversitetet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Monte Carlo simulation; Three-dimensional; Energy weighting; X-ray; Pixel detector; Charge sharing; Imaging; Medipix; Spectroscopy; Dental diagnosis; Image quality; Electronics; Elektronik;

   Abstract : This licentiate thesis concerns the development and characterisation of X-ray imaging detector systems. “Colour” X-ray imaging opens up new perspectives within the fields of medical X-ray diagnosis and also in industrial X-ray quality control. READ MORE

4. 2. Characterisation and application of photon counting X-ray detector systems

   Author : Börje Norlin; Christer Fröjdh; Hans-Erik Nilsson; Sherwood Parker; Mittuniversitetet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Monte Carlo simulation; Three-dimensional; X-ray flouriscence; Charge transport; Semiconductor materials; Image sensors; CdTe; Photon counting; Synchrotron radiation; Material recognition; X-ray; Pixel Detector; Silicon; Charge sharing; Imaging; Medipix; Spectroscopy; Dental diagnosis; Image quality; Energy weighting; Electronics; Elektronik;

   Abstract : This thesis concerns the development and characterisation of X-ray imaging systems based on single photon processing. “Colour” X-ray imaging opens up new perspectives within the fields of medical X-ray diagnosis and also in industrial X-ray quality control. READ MORE

5. 3. Dynamics of multiphoton processes in nonlinear optics and x-ray spectroscopy

   Author : Ji-Cai Liu; Faris Gel'mukhanov; Richard Taieb; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; nonlinear optics; x-ray spectroscopy; multiphoton processes; pulse propagation; Atomic and molecular physics; Atom- och molekylfysik; Spectroscopy; Spektroskopi;

   Abstract : New generations of ultrashort and intense laser pulses as well ashigh power synchrotron radiation sources and x-ray free electronlasers have promoted fast developments in nonlinear optics andx-ray spectroscopy.The new experimental achievements and the appearance of varieties of novelnonlinear phenomena call for further development of theories. READ MORE

6. 4. Core Level Spectroscopy of Water and Ice

   Author : Dennis Nordlund; Anders Nilsson; Martin Wolf; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; x-ray adsorption spectroscopy; photoemission spectroscopy; x-ray photoelectron spectroscopy; platinum; x-ray emission spectroscopy; density functional theory; hydrogen-bonded; H-bond; water; ice; electronic structure; excited state dynamics; proton dynamics; water adsorption; liquid water; Physics; Fysik;

   Abstract : A core level spectroscopy study of ice and water is presented in this thesis. Combining a number of experiments and spectrum calculations based on density functional theory, changes in the local valence electronic structure are shown to be sensitive to the local H-bonding configurations. READ MORE

7. 5. Non-linear Spectroscopy of Conical Intersections with XUV and X-ray Photons

   Author : Deependra Jadoun; Markus Kowalewski; Faris Gelmukhanov; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Conical Intersections; Non-linear Spectroscopy; Quantum Dynamics; Perturbation Theory; Ultrafast Spectroscopy; X-ray; XUV; Theoretical Physics; teoretisk fysik;

   Abstract : Conical intersections (CIs) appear in a molecule due to the breakdown of the Born-Oppenheimer approximation when the energy difference between two or more electronic states decreases. CIs are known to play a crucial role in processes such as photosynthesis and vision in the human eye, and therefore it is important to probe the existence of such entities in molecules. READ MORE