Patent ID: 8587227

Claim:
An electrostatic ion accelerator arrangement having an ionization chamber (IK), which has a beam exit opening on one side, in a longitudinal direction, with an anode arrangement (AN) and an electrode arrangement containing a cathode arrangement (KA), which generate an electrostatic field in the ionization chamber that essentially points in the longitudinal direction, whereby the anode arrangement is disposed opposite the exit opening, at a foot point of the chamber, and whereby lost heat occurs in an electrode body (EK) of the anode arrangement (AN), which absorbs electrons from the ionization chamber, wherein the anode arrangement gives off a predominant part of the lost heat that occurs in it to the ionization chamber (IK) as heat radiation (WS), and wherein the ionization chamber is adapted so that when working gas is introduced into the ionization chamber, the gas is ionized in the ionization chamber and gas ions are electrostatically accelerated and ejected through the exit opening of the ionization chamber, wherein a heat radiation reflector device (R 1 , R 2 ) is disposed on the side of the electrode body (EK) that faces away from the ionization chamber (IK) and comprises a reflector surface having an emission capacity that is lower than the emission capacity of the front surface of the anode electrode that faces the ionization chamber.