AlAA 98-3923 Microfabricated Ion Accelerator Grid Design Issues: Electric Breakdown Characteristics of Silicon Dioxide Insulator Material Juergen Mueller, David Pyle, Indrani Chakraborty, Ronald Ruiz, William Tang, and Russell Lawton Jet Propulsion Laboratory California Institute of Technology Pasadena CA 91109 34th AIANASMEiSAEiASEE Joint Propulsion Conference & Exhibit July 13-15, 1998 / Cleveland, OH For permission to copy or republish, contact the American Institute of Aeronautics and Astronautics 1801 Alexander Bell Drive, Suite 500, Reston, VA 22091