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Journal of Physical Studies 7(2), 167–174 (2003)
DOI: https://doi.org/10.30970/jps.07.167 PULSED-PERIODIC VOLUME DISCHARGE OF LOW PRESSURE ON MIXTURES OF ARGON AND KRYPTON WITH ELEGASA. K. Shuaibov, L. L. Shimon, I. V. Shevera, A. Y. Dashchencko
Uzhgorod National Unaversity |
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The results of the investigation of space, electrical and optical characteristics of pulsed-periodic discharge on Ar/SF$_{6}$ and Kr/SF$_{6}$ gas mixttures are presented in this paper. A volume discharge not touched with the quarts window (removed apertura UV-VUV radiation) were ignited in the system of electrodes `spherical anode-plane kathode' under the interelectrode distance of 3 cm and general pressure of mitures $< 2.0$ kPa. Pulsed-periodic mode of combustion of discharge was recieved by means of the instability development in a plasma, which was caused by a violation of the balance between the processes of attachment and detachment of electrodes to the molecules of elegas (and products of its dissociation in plasma). Due to it pulsed-periodic mode of burning of discharge is set up automatically by feeding on anode a constant voltage ($U_{\rm ch}< $ 1.0 kV). The role of commutator in the scheme of feeding discharge is performed by plasma. The volume discharge can be used in the pulsed-periodic excimer lamp of low pressure which is designed for using in microelectronics, polymer chemistry, biotechnology and medicine. It is determined that plasma of volume discharge is a wide band source of radiation in the range of spectrum 150-300 nm. Basis length of waves radiation lamps are 193 nm ArF($B$-$X$) and 249 nm KrF($B$-$X$). The frequency of the following current pulses of discharge changed in the range of 1-120 kHz by increasing the average current from 1 to 50 mA and changing the capacity of exterior condencator (which shunts the discharge gap) within the limits of 200-3500 pF. The results of investigation resources characteristics of radiation molecules ArF($B$-$X$) and KrF($B$-$X$) depending on the value of average current discharge are presented in this paper.
PACS number(s): 52.80.Jm, 52.20.Jm.