Sökning: "Autoionization"

Visar resultat 1 - 5 av 12 avhandlingar innehållade ordet Autoionization.

  1. 1. Autoionization studies of adsorbates

    Författare :Anders Sandell; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  3. 2. Autoionizing states and their relevance in electron-ion recombination

    Författare :Dragan Nikolić; Eva Lindroth; Gleb Gribakin; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Electron-ion recombination; Autoionization; Electron correlation calculations; Doubly excited states; Relativistic many-body perturbation theory; Coupled-cluster methodology; Intruder state problem; Physics; Fysik;

    Sammanfattning : Atomic physics plays an important role in determining the evolution stages in a wide range of laboratory and cosmic plasmas. Therefore, the main contribution to our ability to model, infer and control plasma sources is the knowledge of underlying atomic processes. LÄS MER

  4. 3. Single-photon multiple ionization processes studied by electron coincidence spectroscopy

    Författare :Per Linusson; Mats Larsson; Raimund Feifel; Stephen Price; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; photoionization; multiple ionization; autoionization; synchrotron radiation; electron coincidence spectroscopy; fysik; Physics;

    Sammanfattning : This thesis is based on studies of multiple ionization of atoms and molecules induced by the absorption of a single photon. For the experimental investigations a time-of-flight magnetic bottle spectrometer has been used to detect the emitted electrons in coincidence. LÄS MER

  5. 4. Dissociation dynamics of highly excited molecules: Theory and Experiment

    Författare :Shabnam Oghbaie; Synkrotronljusfysik; []
    Nyckelord :Molecular dissociation; core-electron excitation; double ionization; femtoseconds molecular dynamics; Isomerization; symmetry breaking; momentum imaging; site-selective dissociation; butadiene; cyclopropane; nuclear dynamics; Auger decay;

    Sammanfattning : This thesis presents studies on dissociation of two model molecules: Butadiene and Cyclopropane. Tunable synchrotron radiation was used to ionize or excite the molecules in the gas phase, and the momentum correlation of the resulting fragment ions were measured using a 3D momenta coincident ion spectroscopy. LÄS MER

  7. 5. Theoretical studies of collisions involving the H2 reaction complex

    Författare :Johan Hörnquist; Åsa Larson; Eva Lindroth; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; fysik;

    Sammanfattning : In this thesis, collisions involving the H2 reaction complex are studied theoretically and the processes considered are mutual neutralization, double charge transfer, associative ionization, dissociative recombination and resonant ion-pair formation. These processes are examples of reactions that involve several excited states and where the Born-Oppenheimer approximation is not applicable. LÄS MER