Sökning: "electron affinity"

Visar resultat 1 - 5 av 100 avhandlingar innehållade orden electron affinity.

  1. 1. Synthesis and Characterisation of Conjugated Polymers with High Electron Affinity

    Författare :Maria Jonforsen; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; light-emitting diode; solar cell; quinoxaline; conjugated polymer; photodiode; 4-b]pyrazine; pyrido[3; synthesis; photo-oxidation; electron affinity; pyridine;

    Sammanfattning : This thesis describes synthesis and characterisation of conjugated polymers with high electron affinities. Polymers of this type are desired, for example, for use in light-emitting devices or as electron accepting material in photodiodes/solar cells. LÄS MER

  3. 2. Photodetachment spectroscopy : negative ion bound states and resonances Gunnar Haeffler

    Författare :Gunnar Haeffler; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; electron correlation; electron affinity; shape resonance; fine structure; ion optics; photodetachment; resonance ionization spectroscopy RIS ; Wigner law; doubly excited state; Feshback resonance; negative ion; electron spectroscopy;

    Sammanfattning : .... LÄS MER

  4. 3. Spectroscopic studies of the negative state of atoms

    Författare :Jakob Welander; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Atomic Physics; Photodetachment; Negative Ions; Anions; Laser Photodetachment Spectroscopy; Electron Affinity; ISOLDE; CERN; Radioisotopes; Photo Angular Distributions; Graphene; Electron correlation; Neutral Particle Detection; Wannier s Threshold Law;

    Sammanfattning : Negative ions are of fundamental interest in atomic physics due to the enhanced importance of the electron correlation. In this thesis new spectroscopic methods have been developed and then applied to study the nature of atomic negative ions. LÄS MER

  5. 4. Photodetachment of Negative Ions. Experimental Investigations of Threshold and Continuum Structures

    Författare :Joakim Sandström; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; electron correlation; resonance ionization spectroscopy; doubly excited states; electron affinity; accelerator mass spectrometry; photodetachment;

    Sammanfattning : In this thesis photodetachment studies of atomic negative ions where one or several electrons are detached from a negative ion are presented. Negative ions are unique objects since their formation and destruction mechanisms strongly depend on the correlated motion of the valence electrons. LÄS MER

  7. 5. Spectroscopy of Stable and Radioactive Negative Ions

    Författare :Annie Ringvall-Moberg; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Atomic Physics; ISOLDE; CERN; Electron Correlation; Electron Affinity; Photodetachment; Negative Ions; Anions; Radioisotopes; Laser Photodetachment Spectroscopy; Resonance Ionization; Neutral Particle Detection; Wigner Threshold Law; Molecular Dissociation; RFQcb; DESIREE; Radiative Lifetimes;

    Sammanfattning : Negative ions are unique quantum systems which are of fundamental interest within the field of atomic physics due to the importance of the electron correlation in their creation, stability, and existence. Properties of these ions, such as the electron affinity, i.e. LÄS MER