Uniform fill improves K-shell power relative to annular fill for argon gas puffs on Saturn

• Main Authors: Sanford, T.W.L., Marder, B.M., Spielman, R.B., Nash, T.J., Douglas, M., Deeney, C., Struve, K., Mock, R.C., Seamen, J.F., McGurn, J.S., Jobe, D., Gilliland, T.L., Vargas, M., Apruzese, J.P., Thornhill, J.W., Pulsifer, P.E., Whitney, K.G., Davis, J., Cochran, S.L., Velikovich, K.G., Weber, B.V., Peterson, G., Mosher, D., De Groot, J.S., Hammer, J.H.
• Format: Conference Proceeding
• Language: English
• Subjects: 07 ISOTOPE AND RADIATION SOURCE TECHNOLOGY; ACCELERATORS; Argon; Cameras; COMPARATIVE EVALUATIONS; Current measurement; Energy measurement; Geometry; Hydrodynamics; IMPLOSIONS; Laboratories; LONGITUDINAL PINCH; Physics; PRESSURE DEPENDENCE; Radiation monitoring; Saturn; X RADIATION; X-RAY SOURCES
• ISSN: 0730-9244; 2576-7208
• DOI: 10.1109/PLASMA.1996.551486

Summary form only given. The radiation from uniform-fill argon gas puffs on the Saturn accelerator with a 4.5-cm diameter nozzle are compared with that generated from a previously optimized 2.5-cm diameter annular nozzle. The pressure range of the uniform fill spanned 1300 to 2900 Torr and that of the annular nozzle was set to 1650 Torr-the pressure that previously maximized the K-shell radiation yield. B-dot monitors measured current in the MITLs and 4.5 cm upstream of the load. A bolometer and duplicate sets of filtered XRDs and PCDs, spanning the energy range of 200 eV to 6 keV, monitored the temporal characteristics of the radiation. A suite of time-integrated and time-resolved, filtered, fast-framing, X-ray pinhole cameras, and crystal spectrometers monitored the spatial and spectral structure of the radiation. The radial density profile of the initial gas profile was measured on a test stand at NRL using a two-color interferometer.