| Abstract: | The article contains results of a study of electric and optical characteristics of a negative corona discharge in a “needles-grid”
electrode system in the mixtures He/Xe and He/Xe(Kr)/HCl, which are used in periodic pulsed electric-discharge Xe(6p−5d),
XeCl, and KrCl lasers. The corona discharge was ignited in a multielectrode system whose length is commensurable with the
length of the active medium of the lasers. Voltage-current characteristics, radiation spectra of the discharge plasma, and
the dependences of the radiation intensity of atomic spectral lines and the band λ=308 nm of XeCl (B-X) on parameters of the
corona discharge are studied. For the mixture He/Xe the corona discharge exists as a spatially homogeneous discharge that
is intermediate between corona and glow discharges and is transformed into an anode streamer at higher charge voltages. Collisional
purification of the 6p states of the Xe atom by helium was observed. In the mixture He/Xe/HCl the corona discharge is ignited
in the form of individual generation zones and a dark external region and can be used in electric systems for pumping the
active media of XeCl and KrCl lasers.
Uzhgorod State University, 46, Pidgirna St., Uzhgorod, 294000, Ukraine. Translated from Zhurnal Prikladnoi Spektroskopii,
Vol. 65, No. 2, pp. 205–210, March–April, 1998. |
