Physics – Condensed Matter – Superconductivity
Scientific paper
May 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aps..may.f1303s&link_type=abstract
American Physical Society, APS/AAPT Joint Meeting, May 2-5, 1996, abstract #F13.03
Physics
Condensed Matter
Superconductivity
Scientific paper
The scientific regime accessed by pulsed power is most succinctly described as the extreme states of matter. These include: high pressure, (2) high temperature, and (3) high magnetic fields. The opportunities for new and exciting basic research range through the disciplines of; (1) astrophysics, (2) planetary physics, (3) geophysics, (4) materials science, (5) plasma physics, (6) atomic physics, and (7) condensed-matter physics. Scientists of the High-Energy-Density Physics Program at Los Alamos currently utilize both explosive-driven generators and capacitor-driven systems to achieve space-time compression of energy. Explosive magnetocumulative generators of Russian design are being used to obtain isentropic compression at pressures near 700 Gpa and magnetic fields in excess of 1000 T. A 4-MJ versatile capacitor bank called Pegasus is now reliably delivering 12 MA to experimental targets with risetime of 6μs. Special z-pinch liners can convert this energy into shock pressures of several TPa and special designs may offer quasi-isentropic compressions at several 10s of GPa. A design to use a liner to compress a magnetic seed field may reach 500 T. A 36-MJ capacitor bank called Atlas is tentatively designed to deliver 20-25 MA in 2-3μs. This device may be capable of isentropic compressions in the 100s of Gpa, magnetic fields in the 1000-T range, and x-ray yield over 1MJ at temperatures over 100 eV. This lecture will review current collaborations to observe of (1) quantum-limit phenomena, (2) magnetic field induced superconductivity, (3) Zeeman-driven bond breaking, (4) exciton spectra, (5) unusual Faraday rotation, and (6) high-compression metalization of simple gases. Speculations on future basic research activities at extreme field, compression, and temperature will also be discussed.
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