43 research outputs found

    On the measurement of electron impact ionisation cross-sections for highly charged ions using an electron beam ion trap (EBIT)

    No full text
    Experiments in which the time evolution of the charge distribution of Argon ions in the Tokyo EBIT was measured have been carried out. These measurements involved extracting the ions from the trap after a controlled confinement time and determining the charge distribution of these ions. By repeating the procedure at various confinement times the onsets for ions of particular charge states were determined at a series of electron beam energies. This sort of data should permit electron impact ionisation cross-sections to be determined as well as providing interesting information relating to EBIT physic

    Measurements of temperature dynamics of ions trapped inside an electron beam ion trap and evidence for ionisation heating

    No full text
    A technique is described whereby measurements of ions extracted from an electron beam ion trap can be used to deduce their temperature dynamics. The measured temperature dynamics shows the expected trend as a function of charge and also gives evidence for Landau-Spitzer heating, ionization heating and evaporative cooling
    corecore