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Summary form only given. Collisional particle-in-cell simulations predict that solid density matter irradiated with a short pulse high intensity laser can be heated to keV temperatures by applying an external magnetic field. The role of the magnetic field is to restrict the radial diffusion of the hot electrons accelerated by the laser field. The confinement can be effective if the gvro-period is...
Summary form only given. The physics of the interaction between large magnetic field and conducting media is important to wire-array z-pinches, high current fuses, magnetically insulated transmission lines, ultrahigh magnetic field generators, magnetized target fusion, and astrophysics. In an experiment on the 1 MA UNR Zebra Marx generator, megagauss magnetic field was pulsed on the surface of 1.0-mm-diameter...
Summary form only given. A Faraday rotation diagnostic was developed at the Nevada Terawatt Facility (NTF) for investigation of magnetic fields in plasma from 1-MA wire arrays and X-pinches. Optical diagnostics at the NTF includes a four-channel polaro-interferometer and four-frame shadowgraphy. The polaro-interferometer consists of identical shadow and Faraday channels, shearing air-wedge interferometer,...
Summary form only given. Explosive sub-Alfvenic plasma expansions occur in a variety of space and astrophysical events. A laboratory simulation was performed to investigate such interactions. The plasma flow was created by ablation of a solid CH2 target with up to 0.1 PW/cm2 pulses of the "Tomcat" Nd:glass laser. It expanded in vacuum in the azimuthal magnetic fields with strength up to...
This paper reports studies on time-resolved space-integrated laser induced breakdown spectroscopy (LIBS) of plasmas produced by ultrashort laser pulses at atmospheric pressure, on aluminum alloy targets. The temporal behavior of specific ion and neutral emission lines of Al, Mg and Fe has been characterized. The results show a faster decay of continuum and spectral lines, and a shorter plasma lifetime...
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