Sökning: "resonant inelastic X-ray scattering"

Visar resultat 16 - 20 av 33 avhandlingar innehållade orden resonant inelastic X-ray scattering.

1. 16. 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

3. 17. Quantum nuclear dynamics in  x-ray scattering and lasing

   Författare :Yasen Velkov; Faris Gel'mukhanov; Reinhold Fink; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Theoretical chemistry; Teoretisk kemi;

   Sammanfattning : This thesis presents a theoretical study of the role of nuclear degrees of freedom in the x-ray absorption, x-ray resonant scattering  and some aspects of the interaction of matter with strong laser fields. Most numerical simulations are performed with a time-dependent wave-packet program that have proved its robustness  in previous investigations. LÄS MER

4. 18. Electronic structure studies using resonant X-ray and photoemission spectroscopy

   Författare :Martin Magnuson; D D Sarma; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik; Physics; Fysik; Fysik; Physics;

   Sammanfattning : This thesis addresses the electronic structure of molecules and solids using resonant X-ray emission and photoemission spectroscopy. The use of monochromatic synchrotron radiation and the improved performance of the instrumentation have opened up the possibility of detailed analyses of the response of the electronic systems under interaction with X-rays. LÄS MER

5. 19. Double Excitations in Helium Atoms and Lithium Compounds

   Författare :Marcus Agåker; Jan-Erik Rubensson; Leif Karlsson; David Ederer; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Atomic and molecular physics; Soft X-ray emission; resonant inelastic X-ray scattering; double excitations; lithium halide; helium; Atom- och molekylfysik;

   Sammanfattning : This thesis addresses the investigation of doubly excited 2l´nl states in helium atoms and double core excitations in solid lithium compounds.Measurements on He are made in field free environments and under the influence of electric and magnetic fields, using synchrotron based inelastic photon scattering. LÄS MER

7. 20. Multidimensional nuclear dynamics studied by resonant X-ray scattering and pump-probe spectroscopy

   Författare :Viktoriia Savchenko; Victor Kimberg; Faris Gel'mukhanov; Sergey Polyutov; Sergey Bokarev; KTH; []
   Nyckelord :Teoretisk kemi och biologi; Theoretical Chemistry and Biology;

   Sammanfattning : This thesis is devoted to the theoretical studies of the multidimensional nuclear dynamics in molecules with the help of X-ray and pump-probe spectroscopy. Using an accurate yet computationally cheap mixed approach multimode X-ray absorption spectra (XAS) and resonant inelastic X-ray scattering (RIXS) spectra of water, methanol, and acetic acid were calculated and compared with the available experimental spectra in the gas and liquid phases. LÄS MER