Electrical output parameters of efficient cylindrical thermionic energy converters

摘要

Electrical output parameters are presented for four one-element cylindrical TEC operating with cesium plasmas and electrode gaps from 0.3 to 0.8 mm. The cylindrical emitters have been made by vapor-phase epitaxial deposition of tungsten on cylindrical molybdenum substrates having [111] axial orientation under the conditions where the deposit is automatically formed faced with 9110) planes. The average vacuum work function is up to 5.3 eV. The collector is made of a molybdenum-ruthenium alloy.