Dynamic Characteristics of the Plasma in Discharges through Rare Gases

Emission Characteristics and Sensitivity in a High-Voltage Spark Discharge.

“…The conclusion, in agreement with Olsen and Huxford for sparks in rare gases (29), is that free-bound electron transitions play a minor role in producing background.…”

Plasma Production by Kinetic Impact

“…In csertain situations the Holtsmark theory has proven to be quite adequate In the descrlptidn of the influence of ionic fields on spectral lines (Edels and Craggs, 1951;Olsen and Huxford, 1952;Lochte-Hoitgreven, 1958). Recent investigations have shown that a relian-e on the Hoitsnmark theory is possible for low charged particle densities, of the order of 1016 cm"3 or less; however for higher densities electron effects should be included into a more comprehensive theory.…”