Electrostatic Probe Diagnostics on the LBL 10Ampere Neutral Beam Ion Source.

摘要

The experimental results of electrostatic probe measurements on the LBL 10ampere ion source are presented. Data are obtained via a pulsed acquisition system which digitally records a probe characteristic and its first and second derivatives. The latter are shown to be proportional to the projected electron energy distribution function,and the isotropic electron energy distribution function,respectively. System performance for distribution function measurement is compared to the established technique of harmonic analysis. A complete analysis of the data acquisition system and its experimental accuracy is presented. (ERA citation 04:021094)