Title :
Ion coupling efficiency for an extraction applied-B ion diode on the HELIA linear-induction adder in positive polarity
Author :
Hanson, David L. ; Cuneo, Michael E. ; McKay, Paul F. ; Coats, Rebecca S. ; Rosenthal, Stephen E.
Author_Institution :
Sandia Nat. Labs., Albuquerque, NM, USA
fDate :
10/1/1991 12:00:00 AM
Abstract :
Initial experiments to investigate coupling of the four-stage HELIA linear-induction accelerator to a uniformly insulated applied-B ion diode in planar extraction geometry are reported. Results describing the efficient operation of an applied-B extraction ion diode coupled to the HELIA linear induction accelerator operated in positive polarity are reported. Operation of a close-coupled, undermatched, applied-B diode on HELIA was consistent with magnetically insulated transmission line (MITL) electron flow intermediate between locally emitted flow and generalized flow, rather than with full-gap flow. Peak ion coupling efficiencies of 60-70% and peak ion power levels of 0.3-0.4 TW have been achieved
Keywords :
beam handling equipment; collective accelerators; diodes; ion accelerators; HELIA linear-induction adder; close coupled undermatched diode; electron flow; extraction applied-B ion diode; four-stage; ion coupling efficiencies; linear-induction accelerator; magnetically insulated transmission line; planar extraction geometry; positive polarity; Anodes; Diodes; Electrons; Geometrical optics; Geometry; Impedance; Insulation; Ion accelerators; Ion beams; Laboratories;
Journal_Title :
Plasma Science, IEEE Transactions on
