Diagnostics of dense argon plasmas by twohyphen;wavelength optical absorption

摘要

A diagnostic method using optical absorption at two different wavelengths to determine simultaneously the electron density and temperature in an argon plasma is described. One wavelength is chosen to lie in the continuum, while the other (488 nm) is resonant with a plasma transition. Examples of measurements made in a dense plasma produced by a reflected shock wave are discussed together with the main systematic errors.