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UID:UW-Physics-Event-2590
DTSTART:20120206T180500Z
DURATION:PT1H0M0S
DTSTAMP:20260420T062339Z
LAST-MODIFIED:20120202T150225Z
LOCATION:2241 Chamberlin
SUMMARY:High energy density plasmas generated by radial foils on COBRA
 \, Plasma Physics (Physics/ECE/NE 922) Seminar\, Dr. Pierre-Alexandre 
 Gourdain\, Cornell University
DESCRIPTION:High energy density plasmas turn out to be a wonderful pla
 tform to study warm dense matter\, high yield fusion energy or astroph
 ysical phenomena. The key ingredient to reach megabars of pressures: g
 eometrical focusing. For instance\, a flat metallic foil driven by rad
 ial currents\, which converge onto a central pin\, achieves local dens
 ities on the order of 1022 electrons/cm-3 and temperatures in the keV 
 range. More precisely\, this foil goes through an ablation phase\, cha
 racterized by an axial collimated plasma jet\, a compression phase\, f
 orming a central Z-pinch\, and finally an expansion phase\, where supe
 r-Alfvenic flows carry plasma away. Due to large Reynolds (107 to 109)
  and magnetic Reynolds numbers (101 to 103)\, radial foil plasmas repr
 oduce more or less astrophysical jets and outflows. Using these labora
 tory experiments as intuitive guides\, it is possible to highlight the
  physical mechanisms that might cause such astrophysical formations.
URL:https://www.physics.wisc.edu/events/?id=2590
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