Modified Miniature Thomson-Type Analyzer For Measurements Of Mass- and Energy-Spectra Of Ions Within Plasma Facilities

The paper describes important improvements in the construction and operation of a miniature mass- and energy-analyzer of the Thomson type, which was developed especially for measurements of ions inside vacuum experimental chambers. The described analyzer constitutes a modified and improved version of the prototype miniature mass-spectrometer, which was designed several years ago. The paper describes experimental tests of the modified analyzer, which were carried out in the RPI-IBIS facility equipped with a multi-rod plasma injector. Results of the detailed measurements of energy distributions of protons and deuterons (from deuterium discharges) within the energy range from about 20 keV to about 300 keV are also presented