研究目的
Investigation of the optical characteristics of a high-current nanosecond discharge in atmospheric pressure air between chalcopyrite electrodes (CuInSe2 and CuSbSe2 compounds) in conditions of overstressed discharge gap.
研究成果
The investigation revealed that a spatially uniform plasma formation is formed in the interelectrode gap, with the emission spectra dominated by the radiation of copper, indium, and antimony atoms. The discharge current amplitude reached 100 A, and the maximum energy input was 1 MW in the initial period of discharge. The formation of excited states of the products of sputtering of the electrodes occurs as a result of recombination processes.
研究不足
The study was limited by the conditions of overstressed discharge gap and the specific materials used for the electrodes (CuInSe2 and CuSbSe2 compounds). The effective cross sections for the interaction of electrons with chalcopyrite molecules and the products of its decay are not well investigated.
1：Experimental Design and Method Selection:
The study involved the use of electrodes with a relatively large radius of curvature of the working part (3 mm) and a special system for isolating a part of the surface of the electrodes to obtain a relatively uniform nanosecond discharge in millimeter intervals.
2：Sample Selection and Data Sources:
Two sets of electrodes were used, made from CuInSe2 and CuSbSe2 compounds.
3：List of Experimental Equipment and Materials:
The setup included a high-voltage modulator, a pulsed cable transformer, a wide-band capacitor divider, Rogowski coil, and a wide-wave oscilloscope 6-LOR-
4：Experimental Procedures and Operational Workflow:
Nanosecond pulses of positive polarity voltage were applied to the electrodes to ignite the discharge. The voltage pulses and discharge current were measured, and the spatial characteristics of the discharge were studied using a digital camera.
5：Data Analysis Methods:
The emission spectra of the plasma were recorded using an MDR-2 monochromator, a photomultiplier FEU-106, a direct current amplifier, and an electronic potentiometer.
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