5.1 Motivation

For a neutral particles instrument of the NICE type the neutral particles must be first ionized to be accelerated and measured by the TOF section of the instrument. For a high overall performance a high ionization efficiency of the surface is necessary. The ionization efficiency should be uniform over a wide energy range and exhibit good long term stability.

March 2001 - Martin Wieser, Physikalisches Institut, University of Berne, Switzerland