Title :
Uniform-fill nozzles for long-implosion-time prs experiments
Author :
Levine, John ; Coleman, Philip ; Failor, B. ; Fisher, Amnon ; Lam, S. K. ; Riordan, James ; Song, Yuning ; Sze, H. M. ; Apruzese, J. ; Cochran, F. ; Davis, J. ; Moosman, B. ; Thornhill, J. ; Velikovich, Alexander L. ; Weber, Bruce ; Whitney, K. G. ; Cover
Author_Institution :
Maxwell Physics International, San Leandro, CA 94577-0599, USA
Abstract :
We have developed uniform-fill nozzles for long-implosion PRS experiments to produce argon K-shell x-rays (photon energy > 3.1 keV). With a 7 cm diameter nozzle, which is appropriate for a 200 ns driver, we have achieved a stable implosion at 180 ns and 4 MA with peak argon K-shell yields exceeding 15 kJ. As previously seen with short (∼100 ns) implosion times, the K-shell yield scales as the fourth power of peak current, I4. Limited testing with a 10 cm nozzle, which is appropriate for a >250 ns driver, has also achieved a stable implosion.
Keywords :
Artificial neural networks; Delta modulation; Fluids; Plasmas; K-shell radiation; long-implosion-time; nozzles; z-pinch;
Conference_Titel :
High-Power Particle Beams, 2000 13th International Conference on
Conference_Location :
Nagaoka, Japan
