Results of the Self Magnetic Pinch X-ray Source Experiments On The RITS-6 High Impedance MITL

Summary form only given. As part of a collaborative effort into investigating pulsed power driven high brightness X-ray sources Sandia National Laboratories has conducted a series of experimental runs with the Self Magnetic Pinched (SMP) diode on the RITS-6 accelerator. The annular electron beam of the SPM X-ray source is capable of pinching tightly to pencil size spot size with a large forward directed radiation dose. Coupling of power flow as well as interactions of the electron beam with plasmas from ionized gases of the anode can greatly influence the radiation dose and spot size. Cathode diameter, geometry, and AK gap are key factors in optimizing the operation of the SMP diode. Time integrated spot sizes under 3 mm and forward directed dose in excess of 200 rads at 1 meter were observed. Voltage calculations from radiographers equations are also given which are consistent with PIC simulations. PSF derived from the Barnea square aperture method. Measurements of the time varying behavior of the spot size as well as movement from center will also be presented.