| 表面电晕预电离与火花预电离之比较 |
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| 引用本文： | 胡孝勇,曲彦臣,任德明,刘逢梅,赵景山. 表面电晕预电离与火花预电离之比较[J]. 真空科学与技术学报, 2002, 22(5): 382-384 |
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| 作者姓名： | 胡孝勇 曲彦臣 任德明 刘逢梅 赵景山 |
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| 作者单位： | 哈尔滨工业大学可调谐激光技术国家级重点实验室,哈尔滨,150001 |
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| 基金项目： | 国家自然科学基金资助项目 (No .698780 0 5) |
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| 摘 要： | 本文报道了表面电晕预电离与火花预电离的比较结果。针式火花预电离源利用热电弧发出强烈的紫外光 ,其发射光谱范围从可见光连续延伸到紫外。表面电晕预电离源 ,通过介质极化发射电子 ,在预电离电路中产生电晕电流 ,其强度决定了发射光子的数量 ,而发射电子的能量分布确定辐射的光谱分布 ,其发射光谱分布不连续。对两种预电离源的放电电压和电流进行测量 ,得到瞬态信息。计算得到火花预电离源中消耗的能量约是表面电晕预电离源的 4 0 0倍。比较分析可知 ,表面电晕预电离的效率远高于火花预电离
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| 关 键 词： | 表面电晕 发射光谱 预电离 转换效率 |
| 文章编号： | 0253-9748(2002)05-0382-03 |
| 修稿时间： | 2002-01-06 |
Comparison of Surface Corona Pre-ionization and Bare Spark Pre-ionization |
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| Hu Xiaoyong,Qu Yanchen,Ren Deming,Liu Fengmei,Zhao Jingshan. Comparison of Surface Corona Pre-ionization and Bare Spark Pre-ionization[J]. JOurnal of Vacuum Science and Technology, 2002, 22(5): 382-384 |
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| Authors: | Hu Xiaoyong Qu Yanchen Ren Deming Liu Fengmei Zhao Jingshan |
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| Abstract: | Bare spark pre ionization (BSP) and surface corona pre ionization (SCP) were compared.Electric arc discharge of the tips installed in BSP source produces intense ultraviolet ray emission with a spectrum continuously extended to the range of visible light.After polarization of the dielectrics the SCP source emits electrons, which in turn generate corona current in the circuits of the pre ionization electrodes.The intensity and energy distribution of the filed emission determine the number of photons emitted and the discontinuous photon emission spectrum,respectively.The transient discharge voltage and current of the two pre ionization sources were measured also.The calculated results show that the conversion efficiency of SCP source is much higher than that of BSP source,because BSP source dissipates an energy about 400 times more than the SCP source. |
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| Keywords: | Surface corona Emitting spectra Pre ionization Conversion efficiency |
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