Low beta confinement in a Polywell modelled with conventional
point cusp theories
Matthew Carr, David Gummersall, Scott Cornish, and Joe Khachan
Analytical expressions are presented for the magnetic field in
addition to expressions for the point and line cusps as a
function of device parameters.
Phys. Plasmas 18, 112501 (2011)
pop18-111205
Observational studies of reconnection in the solar corona
David E. McKenzie
Some recent findings about the empirical quantities are
reviewed, including recent estimates of the flux transferred in
individual patchy reconnection episodes, the size distribution
of post-reconnection flux tubes, and the energy released by the
flux tubes as they shrink. Part of the SPECIAL TOPIC: ADVANCES
IN MAGNETIC RECONNECTION RESEARCH IN SPACE AND LABORATORY
PLASMAS.
Phys. Plasmas 18, 111205 (2011)
PoP 18, 092703
Experimental demonstration of early time, hohlraum radiation
symmetry tuning for indirect drive ignition experiments
E. L. Dewald, J. Milovich, C. Thomas, J. Kline, C. Sorce, S.
Glenn, and O. L. Landen
Early time radiation symmetry for indirect drive ignition on the
NIF will be tuned using re-emission spheres. The technique was
validated on the Omega laser facility using 0.9 ignition-scale
vacuum hohlraums at radiation temperatures similar to the first
2 ns of the ignition drive. Our simple analytical model is in
good agreement with both measured P2/P0 and P4/P0 and their
dependence on inner beam power fraction for reasonable
assumptions made on the hohlraum albedo and inner vs outer beam
couplings into x-rays.
Phys. Plasmas 18, 092703 (2011)
PoP 18, 092302
Effect of driving frequency on excitation of turbulence in a
kinetic plasma
T. N. Parashar, S. Servidio, M. A. Shay, B. Breech, and W. H.
Matthaeus
The effect of driving frequency on the efficiency of turbulence
generation through magnetic forcing is studied using kinetic
hybrid simulations with fully kinetic ions and fluid electrons.
The efficiency of driving is quantified by examining the energy
input into magnetic field as well as the thermal energy for
various driving frequencies.
Phys. Plasmas 18, 092302 (2011)
PHP083103RH
Group velocity and pulse lengthening of mismatched laser pulses
in plasma channels
C. B. Schroeder, C. Benedetti, E. Esarey, J. van Tilborg, and W.
P. Leemans
Analytic solutions are presented to the non-paraxial wave
equation describing an ultra-short, low-power, laser pulse
propagating in a plasma channel. Implications for plasma channel
diagnostics are discussed.
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