Thermionic energy conversion plasmas

The author provides a perspective of the nature and scientific characterization of the unique plasmas occurring in the various modes of thermionic converter operation associated with different application requirements. The basic plasma types associated with various modes of converter operation are described, with emphasis on identification and semi-quantitative characterization of the dominant physical processes and utility of each plasma type. Their characteristic advantages are identified with particular applications. The author is concerned primarily with the physics of the various types of plasma employed to conform to the constraints of particular options and applications