Vacuum Ultra-violet Spectra of Multiply Ionized Inert Gases

Abstract

The high temperature plasma (kTe similar, equals 20 eV) produced in ZETA is a copious source of spectral lines emitted by highly ionized atoms in the vacuum ultra-violet. Spectroscopic investigations in the wavelength range 400-1000 Å have revealed several new lines due to the multiply ionized inert gases Ne, A, Kr and Xe. The method of identification is based on the successive appearance of the ionization states of each element, supplemented by isoelectronic calculations which also allowed transitions to be assigned to most lines.