Title :
Uniform fill improves K-shell power relative to annular fill for argon gas puffs on Saturn
Author :
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. ;
Author_Institution :
Sandia Nat. Labs., USA
Abstract :
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.
Keywords :
particle accelerators; 1300 to 2900 torr; 200 eV to 6 keV; Ar gas puffs; B-dot monitors; K-shell power; K-shell radiation yield; MITLs; Saturn accelerator; X-ray pinhole cameras; annular fill; annular nozzle; bolometer; crystal spectrometers; gas profile; radial density profile; radiation spatial structure; radiation spectral structure; radiation temporal characteristics; two-color interferometer; Argon; Cameras; Current measurement; Energy measurement; Geometry; Hydrodynamics; Laboratories; Physics; Radiation monitoring; Saturn;
Conference_Titel :
Plasma Science, 1996. IEEE Conference Record - Abstracts., 1996 IEEE International Conference on
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-3322-5
DOI :
10.1109/PLASMA.1996.551486
