Title :
Design and operation of high energy liner implosions at 16 MA for studies of converging shocks
Author :
Turchi, Peter J. ; Anderson, Brian ; Anderson, H.D. ; Anderson, Willie ; Atchison, Walter L. ; Bartos, Jiri ; Bowers, R.L. ; Guzik, J. ; Kanzleiter, R. ; Lebeda, C. ; Olson, R.T. ; Oro, D. ; Randolph, R.B. ; Reinovsky, Robert E. ; Roberts, John ; Rodrigue
Author_Institution :
Los Alamos Nat. Lab., NM, USA
Abstract :
Summary form only given. Electromagnetically-driven implosion of solid-density, cylindrical liners can launch shocks with excellent precision at impact speeds exceeding 5 km/s. We discuss the design and operation of liner implosions driven at peak currents of 16 MA, using the Shiva Star capacitor bank at AFRL. Liners of 1100 aluminum, with initial length, radius and thickness of 4 cm, 5 cm and 1 mm, respectively, implode under the action of an axial current, rising in 9 microsec. Fields on the conductor surfaces exceed 0.6 MG. The inner surface of the liner achieves a speed of 6.25 km/s when it impacts a concentric target cylinder of tin at a radius of 2 cm. Magnetic probes and radially-aligned X-radiography follow the motion of the liner and its impact on the tin cylinder. This cylinder holds a solid cylinder of acrylic of 1.5 cm radius in which the motion of a converging shock is followed by optical shadowgraphy and axially-aligned X-radiography.
Keywords :
explosions; fusion reactor ignition; fusion reactor materials; plasma diagnostics; plasma probes; plasma shock waves; radiography; 0.6 MG; 1 mm; 1.5 cm; 1100 Al; 16 MA; 2 cm; 4 cm; 5 cm; 5 km/s; 6.25 km/s; 9 mus; AFRL; Air Force Research Laboratory; AlFe; Shiva Star capacitor bank; Sn; X-radiography; acrylic; axial current; axially-aligned X-radiography; bank insulation; cassette insulator; concentric target cylinder; conductor surfaces; converging shock; converging shocks; current contact; current direction; design; dynamic solutions; electrical breakdown; electromagnetically-driven implosion; glide-plane/electrode; high energy liner implosions; impact speeds; impacts; inner surface; liner cassette insulator; liner impact; liner implosions; liner physics; magnetic probes; mechanical pre-stress; motion liner; nonlinear magnetic diffusion; operation; optical shadowgraphy; outer conductor; peak currents; pulsed power; radially-aligned X-radiography; shocks; solid cylinder; solid-density cylindrical liners; surface temperature enhancements; Aluminum; Capacitors; Conductive films; Conductors; Dielectrics and electrical insulation; Electric shock; Electrodes; Probes; Solids; Tin;
Conference_Titel :
Pulsed Power Plasma Science, 2001. IEEE Conference Record - Abstracts
Conference_Location :
Las Vegas, NV, USA
Print_ISBN :
0-7803-7141-0
DOI :
10.1109/PPPS.2001.961074
