James R Echols

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A new high energy density plasma deposition technique has been proposed and tested in order to investigate the formation of metal-vapor plasmas from a single or a mixed form of materials. The concept of electrothermal segmented plasma source (ETSPS) has been used for studies related to surface coatings, hardening, surface modification, ion implantation,(More)
Advanced fusion energy systems require the development of materials able to resist high operating temperatures, high neutron irradiation, and high thermo-mechanical stresses. Additional requirements for fusion materials include low absorption cross-sections, high thermal conductivity, and minimal swelling. Graphite, beryllium, lithium, stainless steel,(More)
Summary form only given. Pulsed electrothermal (ET) plasma sources were originally used as ignition sources for electrothermal chemical weapons and secondary rail gun armature. An ET system consists of a discharge capacitor and accompanying electronics. The capacitor discharges through an electrode, normally comprised of tungsten, which sends current to(More)
Summary form only given. Electrothermal plasma sources operating in the confined controlled arc discharge regime generate plasmas which can be used for a wide variety of applications, including materials deposition, mass acceleration devices, and high heat flux material exposure. Such plasmas are produced by capillary arc discharges-discharging high voltage(More)
PURPOSE Noncontact tonometers are useful when regulations preclude use of contact tonometers by medical students and other nonophthalmologists. Our study compared the measurements by the portable, noncontact tonometer (PT100) with Goldmann applanation tonometry (GAT). METHODS This was a prospective study of 98 eyes from 98 patients. Intraocular pressure(More)
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