Sökning: "Moa Kristiansson"

Hittade 2 avhandlingar innehållade orden Moa Kristiansson.

  1. 1. Negative ion experiments at DESIREE : Photodetatchment studies of transitions and lifetimes of excited states of Ir-

    Författare :Moa Kristiansson; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fysik; Physics;

    Sammanfattning : In this thesis I present measurements using laser photodetachment to investigate negative ions of iridium produced in a cesium sputter ion source and stored in the cryogenic storage ring, DESIREE. The ions are photodetached by either a tunable OPO laser system or a tunable narrow bandwidth Titanium Sapphire laser. LÄS MER

  3. 2. Precision measurements on negative ions

    Författare :Moa Kristiansson; Henning T. Schmidt; Dag Hanstorp; Henning Zettergren; Christophe Blondel; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Negative ions; Atomic physics; Precision measurement; Electron affinity; Photodetachment; Physics; fysik;

    Sammanfattning : In this thesis, experiments with negative ions performed at the DESIREE facility are presented. DESIREE consists of two electrostatic storage rings operated at 13 K. The low temperature in combination with a low pressure allows for storage times of the negative ion beams to be up to several hours. LÄS MER