DocumentCode
563599
Title
Gas puff implosion measurements and modeling
Author
Moosman, B. ; Boller, J.R. ; Commisso, R.L. ; Hinshelwood, D.D. ; Mosher, D. ; Stephanakis, S.L. ; Weber, B.V. ; Qi, N. ; Schein, J. ; McFarland, M. ; Prasad, R.R. ; Krishnan, M.
Author_Institution
Plasma Physics Division, Naval Research Laboratory, Washington, DC, 20375 USA
fYear
2000
fDate
20-25 June 2000
Firstpage
685
Lastpage
688
Abstract
Two-dimensional interferometric images obtained in gas-puff z-pinch experiments on the Hawk generator are compared with snowplow calculations using the measured gas distribution for various times during the 250-ns implosion. To match the calculated implosion time with the observed implosion time, 88% to 101% of the measured cathode current, adjusted for each shot, is required to implode the snowplow. The snowplow model reproduces the (r,z) shape of the measured 2-D plasma shell at different times during the implosion. The inferred current loss between the measurement location (17-cm upstream of the nozzle) and the z-pinch may be due to vacuum flow resulting from the plasma-opening switch.
Keywords
Anodes; Generators; interferometer; snowplow; z-pinch;
fLanguage
English
Publisher
ieee
Conference_Titel
High-Power Particle Beams, 2000 13th International Conference on
Conference_Location
Nagaoka, Japan
Type
conf
Filename
6219963
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