Studies of Argon-Hydrogen Arc Cutting

Nonequilibrium Hydrogen/nitrogen Plasmas Studies Using a Cascade Arc

A cascade arc facility has been constructed at The University of Tennessee Space Institute (UTSI) to study the effect of nonequilibrium transport properties in hydrogen-nitrogen arcjet propellant plasmas. These studies are being used to guide development of the physical models required for further development of arcjet computational codes. The cascade arc has been operated on hydrogen with a cu...

Numerical Modelling of a Cutting Arc Torch

Hydrogen Gas Cutting System

Recently, the introduction of advanced “Hydrogen Gas Cutting” was investigated but finally abandoned due to the problems of several accidents occurred, cost merit and safety. The facility is called “Hydrogen-Oxygen Mixture Gas Generation System” and stores the hydrogen detonating gas (when hydrogen and oxygen are mixed to 2:1 in volume ratio, the mixture gas violently explodes if ignited), so t...

Concentration Behavior of Non-Metallic Impurities in Cu Rods Refined by Argon and Hydrogen Plasma-Arc Zone Melting

Manufacturing Engineering Centre, Cardiff University, Queen’s Building, The Parade, Newport Road, Cardiff CF24 3AA, Wales, UK Minerals & Materials Processing Division, Korea Institute of Geoscience & Mineral Resources, 92 Gwahangno, Yuseong-gu, Daejeon 305-350, Korea Ultrapure Materials Division, Centre for Materials for Electronics Technology (C-MET), IDA, Phase-III, Cherlapally, HCL-Post, Hyd...

Inelastic neutron scattering of hydrogen trapped in solid argon

2014 Molecular hydrogen was isolated in an argon matrix. Its inelastic neutron scattering functions at momentum transfers of 1 to 7 Å-1 were compared with those of solid hydrogen. Both samples show free rotation without line shift. At high momentum transfer (7 Å-1), the spectrum of pure hydrogen is affected by recoil, whereas no recoil effects could be seen in matrix isolated H,. Revue Phys. Ap...