Sökning: "Henning Zettergren"

Visar resultat 6 - 10 av 16 avhandlingar innehållade orden Henning Zettergren.

  1. 6. Precise measurements of electron affinities using Laser Photodetachment Threshold Spectroscopy

    Författare :Jose Eduardo Navarro Navarrete; Henning Zettergren; Henning T. Schmidt; Jan-Erik Rubensson; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; fysik;

    Sammanfattning :  In this work we have performed Laser Photodetachment Threshold Spectroscopy (LPTS) to determine the electron affinities of the atomic species $^{133}$Cs and $^{16}$O with high precision. The negative ion of Cesium has been produced and investigated at the Gothenburg University Negative Ion and Laser LAboratory (GUNILLA) while the Oxygen anion have been studied in the Double ElectroStatic Ion Ring ExpEriment (DESIREE) at Stockholm University. LÄS MER

  3. 7. Carbon backbone stability of Polycyclic Aromatic Hydrocarbons

    Författare :Michael Wolf; Henning Zettergren; Henrik Cederquist; Henning Schmidt; Stefano Bonetti; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; fysik;

    Sammanfattning : In this thesis I present results from Collision-Induced Dissociation (CID) experiments of Polycyclic Aromatic Hydrocarbons (PAHs) colliding with a stationary target gas at center-of-mass collision energies in the 20–200 eV range. In this energy region nuclear stopping processes dominate, i.e. LÄS MER

  4. 8. Energetic processing of complex molecules in the gas phase

    Författare :Michael Wolf; Henning Zettergren; Henrik Cederquist; T. Henning Schmidt; Christine Joblin; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fysik; Physics;

    Sammanfattning : Collisions between molecules and gas phase targets often lead to various intriguing processes. Such collisions may induce fragmentation of molecules that can be divided into different subsets depending on the projectile, target, and collision energy. LÄS MER

  5. 9. Electron transfer and fragmentation in fullerene collisions

    Författare :Henning Zettergren; Henrik Cederquist; Paul-Antoine Hervieux; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fullerene; Physics; Fysik;

    Sammanfattning : In this thesis, we present results from detailed gas phase studies of intrinsic properties of fullerenes (C60) and clusters of fullerenes as probed by slow multiply charged (atomic or cluster) ions in combination with coincidence time-of-flight mass spectrometry. We have investigated the structures, stabilities, and the electron mobilities of multiply charged clusters of fullerenes, (C60)nr+ (r=2-5). LÄS MER

  7. 10. Statistical and Non-statistical frag-mentation of large molecules in col-lisions with atoms : Polycyclic Aromatic Hydrocarbons and Fullerenes

    Författare :Tao Chen; Henrik Cederquist; Henning Zettergren; Jens Jensen; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fysik; Physics;

    Sammanfattning : .... LÄS MER