Swarm Analysis by Using Transport Equations. II. Theoretical Estimation of Average Energy Loss Factor of Electrons

As a correlated subject of electron swarm behavior analyzed by usitag transport equations, a general theory of the average energy loss factor of electrons is presented. From the energy balance equation, how the energy gain of electrons gained from the electric field is divided into several energy losses is first elucidated. Subsequently a theory of energy loss factor of electrons is established, on the basis of which characteristics of loss factors for He, Ne and Ar are drawn and their properties are discussed. Finally those calculated results are compared with some published data. Conception of the loss factor will be available for clarification of the energy loss mechanism of electrons in gas discharges.