Sökning: "synchrotron radiation"

Visar resultat 6 - 10 av 187 avhandlingar innehållade orden synchrotron radiation.

1. 6. Photoelectron Spectroscopy on HCl and DCl : Synchrotron Radiation Based Studies of Dissociation Dynamics

   Författare :Florian Burmeister; Eckart Rühl; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Photoelectron spectroscopy; HCl; DCl; Dissociation dynamics; Born-Oppenheimer approximation; Synchrotron radiation; Fysik; Physics; Fysik; fysik; Physics;

   Sammanfattning : Dissociation dynamics of the ionized molecules HCl and the deuterated system DCl has been studied in gas-phase using synchrotron based photoelectron spectroscopy (PES).The inner-valence "(4σ)-1" photoionization band for DCl and HCl was recorded using maximum resolution in order to probe an interference pattern between a dissociative and a bound electronic state. LÄS MER

3. 7. Synchrotron Radiation Studies of Free and Adsorbed Molecules

   Författare :Zhuo Bao; Maria Novella Piancastelli; Svante Svensson; Denis Ceolin; Edwin Kukk; Uppsala universitet; []
   Nyckelord :Physics; Synchrotron radiation; Auger electron spectroscopy; one-step model; Post Collision Interaction PCI ; theoretical modeling; molecules; adsorbates; UPS; XPS; XAS; NEXAFS; Fysik;

   Sammanfattning : This thesis contains two parts. The first part concerns the research work on free molecules using synchrotron-radiation-related techniques. Auger electron spectra of two free open-shell molecules, O2 and NO, were studied experimentally and theoretically. 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. Synchrotron radiation study of free and adsorbed organic molecules

   Författare :Teng Zhang; Carla Puglia; Nils Mårtensson; Svante Svensson; Mats Götelid; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Synchrotron radiation; Phthalocyanine; Cobalt phthalocyanine; Biphenylene; Functional materials; CoPc; Photoemission spectroscopy; Absorption spectroscopy; PES; XAS; Electronic structure; Gas phase; film; Organic molecule;

   Sammanfattning : In this licentiate thesis, organic molecules, namely Cobalt Phthalocyanine (CoPc) and Biphenylene, have been studied by means of synchrotron radiation-based spectroscopic methods (Photoemission Spectroscopy (PES) and X-ray Absorption Spectroscopy (XAS) in combination with Density Functional Theory (DFT) calculations.Paper I is a combined experimental and theoretical investigation of electronic structure of CoPc. LÄS MER

7. 10. Synchrotron radiation induced fluorescence spectroscopy of gas phase molecules

   Författare :Jesús Álvarez Ruiz; Elisabeth Rachlew; J. E. Rubensson; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; molecular spectroscopy; photon induced fluorescence; synchrotron radiation; superexcited states; Fysik; Physics; Fysik;

   Sammanfattning : A new experimental set-up for gas phase fluorescence studies using synchrotron radiation has been designed and constructed to perform simultaneously total and dispersed fluorescence measurements. Neutral photodissociation of CO has been investigated after excitation with 19-26 eV photons. LÄS MER