| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
Local discharge which is a prebreakdown phenomenon was investigated in relation to clarification of discharge phenomena under wet polluted condition. Emission spectra of the retentional local discharge and the progressive local discharge were observed, and the discharge phase was discussed from the spectrum due to the electrolyte and the temperature of the discharge space. The temperature was estimated from spectral distribution caused by nitrogen molecule. Furthermore, influence of the electrolyte was discussed. As a result, it was found that the local discharge took arc-like discharge phase when the discharge current was relatively large and it took glow-like discharge phase when the current was relatively small in both cases of the local discharges. However, the local discharge when the discharge current was relatively small was estimated that it took arc-like discharge phase temporarily. Influence of electrolyte to the temperature of the discharge space was recognized but small.
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