16.522, Space Propulsion Prof. Manuel martinez-Sanchez Lecture 13-14: Electrostatic Thrusters Outline No 1 Introduction 2 Principles of Operation..... 3 Ion Extraction and Acceleration 4 Ion production 4.1 Physical Processes in Electron Bombardment ionization chambers 9 4.2 Nature of the losses 4,3 Electron diffusion and confinement 11 4. 4 Particle production rates 13 4.5 Lumped Parameter Performance Model 15 Propellant Selection References 16 16.522, Space P pessan Lecture 13-14 Prof. Manuel martinez Page 1 of 2516.522, Space Propulsion Lecture 13-14 Prof. Manuel Martinez-Sanchez Page 1 of 25 16.522, Space Propulsion Prof. Manuel Martinez-Sanchez Lecture 13-14: Electrostatic Thrusters Outline Page No. 1 Introduction…………………………………………………………………………………… 2 2 Principles of Operation………………………………………………………………….. 2 3 Ion Extraction and Acceleration……………………………………………………. 3 4 Ion Production………………………………………………………………………………. 9 4.1 Physical Processes in Electron Bombardment Ionization Chambers………………………………. 9 4.2 Nature of the Losses……………………………………………………….. 10 4.3 Electron Diffusion and Confinement……………………………….. 11 4.4 Particle Production Rates…………………………………………………. 13 4.5 Lumped Parameter Performance Model…………………………… 15 5 Propellant Selection ………………………………….………………………………….. 15 References………………………. 16