M. Grieser et al., TIME INTEGRATED MEASUREMENTS OF THE SPECTRAL-LINE EMISSION OF A NEON PINCH PLASMA RADIATION SOURCE IN THE 0.9-1.4 NM WAVELENGTH RANGE, Contributions to Plasma Physics, 36(5), 1996, pp. 613-618
Time integrated measurements of the line emission of hydrogen-like and
helium-like neon from a dense plasma focus device were performed. Rel
ative intensities of Lyman-series emission from Ne X were measured end
-on and side-on showing strong deviation from thermal equilibrium and
indicating substantial population inversion between levels n = 5 and n
= 2.