Sökning: "resonant x-ray scattering"

Visar resultat 16 - 20 av 51 avhandlingar innehållade orden resonant x-ray scattering.

1. 16. Molecular electronic,  vibrational and rotational motion in optical and x-ray fields

   Författare :Sergey Gavrilyuk; Faris Gelmukhanov; Stephane Carniato; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; x-ray; nonlinear optics; photobleaching; recoil; anisotropy; Auger; Chemical physics; Kemisk fysik;

   Sammanfattning : The subject of this theoretical  study is the role ofelectronic structure as well as of rotational and vibrational motionson interactions between molecules and electromagnetic radiation,ranging from optical to x-ray. The thesis concerns both linear and nonlinear regimes of the light-matter interaction. LÄS MER

3. 17. Quantum chemical calculations of multidimensional dynamics probed in resonant inelastic X-ray scattering

   Författare :Emelie Ertan; Michael Odelius; Åsa Larson; Oriol Vendrell; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; quantum chemistry; X-ray spectroscopy; RASSCF; density functional theory; ultrafast nuclear dynamics; kemisk fysik; Chemical Physics;

   Sammanfattning : This thesis is devoted to the theoretical study of the dynamical processes induced by light-matter interactions in molecules and molecular systems. To this end, the multidimensional nuclear dynamics probed in resonant inelastic X-ray scattering (RIXS) of small molecules, exemplified by H2O (g) and H2S (g), as well as more complex molecular systems, exemplified by NH3 (aq) and kaolinite clay, are modelled. LÄS MER

4. 18. Applications of Soft X-Ray Spectroscopy

   Författare :Conny Såthe; Jan-Erik Rubensson; Joseph Nordgren; Marcus Agåker; Raimund Feifel; Marc Simon; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik;

   Sammanfattning : Soft X-ray emission spectroscopy is an old experimental technique that has seen a strong revival since the advent of new high brilliance soft X-ray sources in the shape of synchrotrons.  This thesis covers a range of applications where soft x-ray techniques have been applied. LÄS MER

5. 19. Electronic structure investigations of transition metal complexes through X-ray spectroscopy

   Författare :Meiyuan Guo; Marcus Lundberg; Hélène Bolvin; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; transition metal complexes; x-ray spectroscopy; electronic structures; Kemi; Chemistry;

   Sammanfattning : Catalysts based on the first-row (3d) transition metals are commonly seen in chemical and biological reactions. To understand the role of the transition metal in the catalyst, the element specific technique core level spectroscopy is used to probe the electronic structure and geometric properties centered around the metal site. LÄS MER

7. 20. Dynamics of multiphoton processes in nonlinear optics and x-ray spectroscopy

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

   Sammanfattning : 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. LÄS MER