Gentle, Kenneth W.2013-11-272017-05-112017-05-112013-05May 2013http://hdl.handle.net/2152/22483textProfiles for electron density and temperature were determined in a self-consistent way using line emission spectroscopy and collisional radiative models for neutral and singly ionized Argon (Ar I and Ar II) in the Texas Helimak. Neutral Argon density profiles were calculated using a kinetic gas model. Electron-impact excitation and Ionization rates were corrected to account for the electron velocity distribution deviating slightly from a true Maxwellian distribution due to inelastic electron-neutral collisions. Results show an electron temperature which roughly agrees with probe diagnostics. This method gives an electron density that is about twice as high, which may be possible from a power balance perspective.application/pdfen-USHelimakSpectroscopyArgonDensityTemperatureElectronNeutralIon2013-11-27