Pub Date : 2006-09-01DOI: 10.1109/DEIV.2006.357319
M. Shinjyo, Y. Taira, T. Uehara, E. Kaneko
When a small direct current, a few tens of amperes, is interrupted by a vacuum circuit breaker, small vibrations in the current sometimes appear. The authors call these vibrations as arc unstable phenomena. Present investigations show that the phenomena occur earlier by the smaller value of the interrupted current and larger value of parallel capacitance
{"title":"Small Direct Current Interruption Phenomena in a Vacuum Circuit Breaker","authors":"M. Shinjyo, Y. Taira, T. Uehara, E. Kaneko","doi":"10.1109/DEIV.2006.357319","DOIUrl":"https://doi.org/10.1109/DEIV.2006.357319","url":null,"abstract":"When a small direct current, a few tens of amperes, is interrupted by a vacuum circuit breaker, small vibrations in the current sometimes appear. The authors call these vibrations as arc unstable phenomena. Present investigations show that the phenomena occur earlier by the smaller value of the interrupted current and larger value of parallel capacitance","PeriodicalId":369861,"journal":{"name":"2006 International Symposium on Discharges and Electrical Insulation in Vacuum","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131371363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The two-dimensional pressure distribution and pump-down performance between two parallel planes having a short-distance were simulated by a Monte-Carlo method, assuming the cosine-law for desorbing molecules. The distribution results were compared with those calculated by a diffusion model. The surface hitting number per molecule was also counted, and the delay time of the pumping process was evaluated by multiplying the hitting number and the surface sojourn time. The experimental observation for the delay time was compared with the calculated ones
{"title":"Pressure Distribution and Pumping Delay Time in Short-Spacing Parallel Planes","authors":"Y. Saito, Y. Sato, N. Matuda","doi":"10.3131/jvsj.50.366","DOIUrl":"https://doi.org/10.3131/jvsj.50.366","url":null,"abstract":"The two-dimensional pressure distribution and pump-down performance between two parallel planes having a short-distance were simulated by a Monte-Carlo method, assuming the cosine-law for desorbing molecules. The distribution results were compared with those calculated by a diffusion model. The surface hitting number per molecule was also counted, and the delay time of the pumping process was evaluated by multiplying the hitting number and the surface sojourn time. The experimental observation for the delay time was compared with the calculated ones","PeriodicalId":369861,"journal":{"name":"2006 International Symposium on Discharges and Electrical Insulation in Vacuum","volume":"175 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121660245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-09-01DOI: 10.1109/DEIV.2006.357278
O. Egorov
Quit new approach for high currents equal 100kA and more is offered to consideration in this paper. The vacuum interrupter (VI) and the vacuum switch (TVG) differ considerably in velocity of electrical strength recovery, value of electrodes erosion, etc. It depends on difference in discharge types. To level these values it is offer in the paper to close the current I0 through TVG before the VI electrodes motion under it it's this value exceeds initial current on DeltaI (DeltaI-current, DeltaI/I0 ~5divide10middot10-2). Surplus DeltaI-current flows through VI but in opposite direction. In the process of electrodes moving apart, DeltaI-current in VI falls down to zero, with time constant tau = L/R, where L, R-inductance of circuit (VI-TVG) and resistance of TVG gap, correspondingly. It makes possible to fast recovery electrical strength of gap between contacts, to reduce considerably erosion of electrodes and voltage of DeltaI-current. On the final stage of the discharge of counter current battery recovery the vacuum strength of TVG gap. Such way of current breaking makes it possible to break direct currents effectively with high power. It is consequence of the combined opening switch technology based on vacuum interrupter and plasma erosion switch
{"title":"Countercurrent Breaking by Vacuum Interrupter Combined in Parallel with Vacuum Switch","authors":"O. Egorov","doi":"10.1109/DEIV.2006.357278","DOIUrl":"https://doi.org/10.1109/DEIV.2006.357278","url":null,"abstract":"Quit new approach for high currents equal 100kA and more is offered to consideration in this paper. The vacuum interrupter (VI) and the vacuum switch (TVG) differ considerably in velocity of electrical strength recovery, value of electrodes erosion, etc. It depends on difference in discharge types. To level these values it is offer in the paper to close the current I0 through TVG before the VI electrodes motion under it it's this value exceeds initial current on DeltaI (DeltaI-current, DeltaI/I0 ~5divide10middot10-2). Surplus DeltaI-current flows through VI but in opposite direction. In the process of electrodes moving apart, DeltaI-current in VI falls down to zero, with time constant tau = L/R, where L, R-inductance of circuit (VI-TVG) and resistance of TVG gap, correspondingly. It makes possible to fast recovery electrical strength of gap between contacts, to reduce considerably erosion of electrodes and voltage of DeltaI-current. On the final stage of the discharge of counter current battery recovery the vacuum strength of TVG gap. Such way of current breaking makes it possible to break direct currents effectively with high power. It is consequence of the combined opening switch technology based on vacuum interrupter and plasma erosion switch","PeriodicalId":369861,"journal":{"name":"2006 International Symposium on Discharges and Electrical Insulation in Vacuum","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114793776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-09-01DOI: 10.1109/DEIV.2006.357376
A. Kondo, A. N. Dagang, H. Motomura, M. Jinno
Emission characteristics of low-pressure, i.e. less than 6.65 kPa, xenon inductively coupled plasma (ICP) was investigated. The discharge tube was made of Pyrex glass with outer diameter of 30 mm. A 4-turns coil was wound on the tube and RF power up to 100 W with frequency of 13.56 MHz was input to initiate a discharge. The luminance of the xenon discharge drastically changed depending on the pressure. When decreasing the pressure from 6.65 kPa to 26.6 Pa, the luminance basically had a tendency to decrease except of the case when the pressure was around 39.9 Pa; the luminance was suddenly increased up to 28,000 cd/m2 at 39.9 Pa, whereas it was about 2500 cd/m2 at 133 Pa. The emission spectrum at 39.9 Pa showed a continuum ranged over the visible region, on the other hand, atomic and ionic line spectra were dominant at 133 Pa. At 39.9 Pa, the discharge color was white and general color rendering index was 90, which is enough for the general lighting. It is thought that the wide range visible continuum is attributed to the ion-electron recombination radiation and results in the increase in the luminance. The detailed investigation of the mode change mentioned above through the measurements of the plasma parameters such as electron density etc. is now under progress
{"title":"Characteristics of Low-pressure Xenon ICP discharge","authors":"A. Kondo, A. N. Dagang, H. Motomura, M. Jinno","doi":"10.1109/DEIV.2006.357376","DOIUrl":"https://doi.org/10.1109/DEIV.2006.357376","url":null,"abstract":"Emission characteristics of low-pressure, i.e. less than 6.65 kPa, xenon inductively coupled plasma (ICP) was investigated. The discharge tube was made of Pyrex glass with outer diameter of 30 mm. A 4-turns coil was wound on the tube and RF power up to 100 W with frequency of 13.56 MHz was input to initiate a discharge. The luminance of the xenon discharge drastically changed depending on the pressure. When decreasing the pressure from 6.65 kPa to 26.6 Pa, the luminance basically had a tendency to decrease except of the case when the pressure was around 39.9 Pa; the luminance was suddenly increased up to 28,000 cd/m2 at 39.9 Pa, whereas it was about 2500 cd/m2 at 133 Pa. The emission spectrum at 39.9 Pa showed a continuum ranged over the visible region, on the other hand, atomic and ionic line spectra were dominant at 133 Pa. At 39.9 Pa, the discharge color was white and general color rendering index was 90, which is enough for the general lighting. It is thought that the wide range visible continuum is attributed to the ion-electron recombination radiation and results in the increase in the luminance. The detailed investigation of the mode change mentioned above through the measurements of the plasma parameters such as electron density etc. is now under progress","PeriodicalId":369861,"journal":{"name":"2006 International Symposium on Discharges and Electrical Insulation in Vacuum","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123877152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-09-01DOI: 10.1109/DEIV.2006.357377
H. Motomura, Y. Muguruma, T. Matsuda, S. Takubo, M. Jinno
Xenon dielectric barrier discharges are expected to be useful as environmentally friendly light sources instead of that containing mercury. The authors have demonstrated new type of dielectric barrier discharge using double helical external electrodes (DHEL) method with xenon. The filling gas pressure ratio of Xe:Ne was 7:3, total pressure was 1.33 kPa and external electrode pitch was 10 mm. This DHEL was operated by sinusoidal waveform voltage, which is preferable to pulsed operation for preventing EMI, with enough phosphor luminance, i.e. 10 000 cd/m2. As a result of the observation of temporal behavior of the discharge by an ICCD camera, two discharges were observed in a half cycle of the sinusoidal input voltage. Moreover, it is found that the emission from the first discharge is intense on the electrode wire, whereas the intense emission position separates and repulsively moves to both sides of the electrode wire. This is explained from the repulsive force between the wall charge and the electrode polarity
{"title":"A New Type of Dielectric Barrier Discharge Using Double Helical External Electrodes","authors":"H. Motomura, Y. Muguruma, T. Matsuda, S. Takubo, M. Jinno","doi":"10.1109/DEIV.2006.357377","DOIUrl":"https://doi.org/10.1109/DEIV.2006.357377","url":null,"abstract":"Xenon dielectric barrier discharges are expected to be useful as environmentally friendly light sources instead of that containing mercury. The authors have demonstrated new type of dielectric barrier discharge using double helical external electrodes (DHEL) method with xenon. The filling gas pressure ratio of Xe:Ne was 7:3, total pressure was 1.33 kPa and external electrode pitch was 10 mm. This DHEL was operated by sinusoidal waveform voltage, which is preferable to pulsed operation for preventing EMI, with enough phosphor luminance, i.e. 10 000 cd/m2. As a result of the observation of temporal behavior of the discharge by an ICCD camera, two discharges were observed in a half cycle of the sinusoidal input voltage. Moreover, it is found that the emission from the first discharge is intense on the electrode wire, whereas the intense emission position separates and repulsively moves to both sides of the electrode wire. This is explained from the repulsive force between the wall charge and the electrode polarity","PeriodicalId":369861,"journal":{"name":"2006 International Symposium on Discharges and Electrical Insulation in Vacuum","volume":"258 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124235299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-09-01DOI: 10.1109/DEIV.2006.357397
J. Park, Heung-Jin Ju, K. Ko
This paper presents experimental and simulation results of discharge in spherically convergent beam fusion device. The deuterium-deuterium (D-D) fusion reaction in that device will generate neutron. The experimental device consists of a vacuum chamber made of stainless steel, spherical mesh type anode and concentric grid cathode of 5cm diameter. The pressure of chamber maintained constant by injecting gas. A star mode discharge which has possibility of effective neutron generation was observed, when deuterium gas was injected in the chamber and pulsed voltage applied to grid cathode
{"title":"A Portable Neutron Source using by Spherically Convergent Beam Fusion Device","authors":"J. Park, Heung-Jin Ju, K. Ko","doi":"10.1109/DEIV.2006.357397","DOIUrl":"https://doi.org/10.1109/DEIV.2006.357397","url":null,"abstract":"This paper presents experimental and simulation results of discharge in spherically convergent beam fusion device. The deuterium-deuterium (D-D) fusion reaction in that device will generate neutron. The experimental device consists of a vacuum chamber made of stainless steel, spherical mesh type anode and concentric grid cathode of 5cm diameter. The pressure of chamber maintained constant by injecting gas. A star mode discharge which has possibility of effective neutron generation was observed, when deuterium gas was injected in the chamber and pulsed voltage applied to grid cathode","PeriodicalId":369861,"journal":{"name":"2006 International Symposium on Discharges and Electrical Insulation in Vacuum","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115532870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-09-01DOI: 10.1109/DEIV.2006.357264
Z. Zhizhong, Z. Jiyan, Wen Huabin, Sun Hui
Electric fields optimization is a main task of designing high voltage vacuum interrupters. A new method of electric fields design of high voltage vacuum interrupters is proposed. Firstly clearance between open contacts was given by calculation and experience. Then according to the multi-gap insulation effect and the vulnerable breakdown spots theory, utilizing the symmetrical voltage shields were proved to be helpful. With finite element methods and optimization theory, a mathematical model of electrical fields intensity in interrupters was given. By solved this optimized model with finite element software, a more symmetrical electric fields in vacuum interrupters was obtained and its peak value appeared in the second auxiliary gaps (the two gaps between the center floating shield and the symmetrical voltage shields). So with this optimized configuration the vacuum interrupters can endure higher static breakdown voltage and higher transient recovery voltage
{"title":"A Utility Method of a High Voltage Vacuum Interrupter Design","authors":"Z. Zhizhong, Z. Jiyan, Wen Huabin, Sun Hui","doi":"10.1109/DEIV.2006.357264","DOIUrl":"https://doi.org/10.1109/DEIV.2006.357264","url":null,"abstract":"Electric fields optimization is a main task of designing high voltage vacuum interrupters. A new method of electric fields design of high voltage vacuum interrupters is proposed. Firstly clearance between open contacts was given by calculation and experience. Then according to the multi-gap insulation effect and the vulnerable breakdown spots theory, utilizing the symmetrical voltage shields were proved to be helpful. With finite element methods and optimization theory, a mathematical model of electrical fields intensity in interrupters was given. By solved this optimized model with finite element software, a more symmetrical electric fields in vacuum interrupters was obtained and its peak value appeared in the second auxiliary gaps (the two gaps between the center floating shield and the symmetrical voltage shields). So with this optimized configuration the vacuum interrupters can endure higher static breakdown voltage and higher transient recovery voltage","PeriodicalId":369861,"journal":{"name":"2006 International Symposium on Discharges and Electrical Insulation in Vacuum","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123504260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-09-01DOI: 10.1109/DEIV.2006.357269
E. Taylor, P. Slade
High voltage breakdown experiments determined the ability of vacuum interrupters to provide adequate circuit isolation in the open position. The vacuum interrupters were rated for a 38kV system voltage, and contained either Cu-W (10 wt.%) or Cu-Cr contacts. Sample interrupters were voltage conditioned with a peak AC voltage of 160kV. The statistical distribution of the BIL breakdown voltage for 3 and 5 mm contact gaps were determined using the up-down method for newly conditioned contacts. A three-parameter Weibull distribution fit the breakdown data, implying the existence of a threshold value below which no breakdowns occurs. These results are discussed in terms of the high voltage capabilities of Cu-W contacts and with respect of the peak open-circuit voltages for typical 38 kV applications. The vacuum breakdown behavior is also compared to the breakdown in SF6
{"title":"High Voltage Breakdown Performance and Circuit Isolation Capability of Vacuum Interrupters","authors":"E. Taylor, P. Slade","doi":"10.1109/DEIV.2006.357269","DOIUrl":"https://doi.org/10.1109/DEIV.2006.357269","url":null,"abstract":"High voltage breakdown experiments determined the ability of vacuum interrupters to provide adequate circuit isolation in the open position. The vacuum interrupters were rated for a 38kV system voltage, and contained either Cu-W (10 wt.%) or Cu-Cr contacts. Sample interrupters were voltage conditioned with a peak AC voltage of 160kV. The statistical distribution of the BIL breakdown voltage for 3 and 5 mm contact gaps were determined using the up-down method for newly conditioned contacts. A three-parameter Weibull distribution fit the breakdown data, implying the existence of a threshold value below which no breakdowns occurs. These results are discussed in terms of the high voltage capabilities of Cu-W contacts and with respect of the peak open-circuit voltages for typical 38 kV applications. The vacuum breakdown behavior is also compared to the breakdown in SF6","PeriodicalId":369861,"journal":{"name":"2006 International Symposium on Discharges and Electrical Insulation in Vacuum","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123122817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-09-01DOI: 10.1109/DEIV.2006.357339
K. Kato, Y. Matsumoto, K. Matsuo, M. Homma
The vacuum circuit breaker (VCB) is a key component to protect electric devices in power receiving and distribution systems. In recent years, the need for a reduction in running costs such as maintenance of VCB as well as the initial cost has arisen. Against this background, we developed BMA (balanced magnetic actuator)-applied VCB which can reduce the number of parts and the sliding elements in the operating mechanism by reducing the maintenance as the operation mechanism of VCB. This report provides a summary
{"title":"The Development of Low-surge-type VCB with a Balanced-type Magnetic Actuator.","authors":"K. Kato, Y. Matsumoto, K. Matsuo, M. Homma","doi":"10.1109/DEIV.2006.357339","DOIUrl":"https://doi.org/10.1109/DEIV.2006.357339","url":null,"abstract":"The vacuum circuit breaker (VCB) is a key component to protect electric devices in power receiving and distribution systems. In recent years, the need for a reduction in running costs such as maintenance of VCB as well as the initial cost has arisen. Against this background, we developed BMA (balanced magnetic actuator)-applied VCB which can reduce the number of parts and the sliding elements in the operating mechanism by reducing the maintenance as the operation mechanism of VCB. This report provides a summary","PeriodicalId":369861,"journal":{"name":"2006 International Symposium on Discharges and Electrical Insulation in Vacuum","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123351456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-09-01DOI: 10.1109/DEIV.2006.357372
K. Kadowaki, T. Sone, H. Nishiyama, I. Kitani
This paper describes experimental results of decomposition of an organic material in water using repetitive surface discharges produced by reciprocal traveling wave voltage pulse. A point electrode with a CR high-pass-filter at one end of a long coaxial cable was faced on a surface of 3 mm thick water layer on the grounded-plate in a low-pressure chamber. When the cable and a coupling condenser in the filter were charged and then directly grounded at the other end of the cable, repetitive discharges propagated from the point electrode along the water surface with a very high frequency. In the test of an optical study, transient discharge light was observed using a gated image intensifier under gas pressures of 0.1 MPa and 0.02 MPa in air. Several discharge channels with branches propagated from the point electrode in 0.1 MPa, whereas glow-like discharges rapidly spread along the water surface in 0.02 MPa with a very high propagation speed. However, reaction speed of indigo carmine molecules in water in 0.1 MPa became higher than that in 0.02 MPa in a decolorization test. We concluded that active species produced by the surface discharge under atmospheric pressure had an important role for the decomposition of the indigo carmine molecules in water
{"title":"Effect of Gas Pressure on Decomposition of Indigo Carmine in Water Subjected to Reciprocal Traveling Wave Voltage Pulse","authors":"K. Kadowaki, T. Sone, H. Nishiyama, I. Kitani","doi":"10.1109/DEIV.2006.357372","DOIUrl":"https://doi.org/10.1109/DEIV.2006.357372","url":null,"abstract":"This paper describes experimental results of decomposition of an organic material in water using repetitive surface discharges produced by reciprocal traveling wave voltage pulse. A point electrode with a CR high-pass-filter at one end of a long coaxial cable was faced on a surface of 3 mm thick water layer on the grounded-plate in a low-pressure chamber. When the cable and a coupling condenser in the filter were charged and then directly grounded at the other end of the cable, repetitive discharges propagated from the point electrode along the water surface with a very high frequency. In the test of an optical study, transient discharge light was observed using a gated image intensifier under gas pressures of 0.1 MPa and 0.02 MPa in air. Several discharge channels with branches propagated from the point electrode in 0.1 MPa, whereas glow-like discharges rapidly spread along the water surface in 0.02 MPa with a very high propagation speed. However, reaction speed of indigo carmine molecules in water in 0.1 MPa became higher than that in 0.02 MPa in a decolorization test. We concluded that active species produced by the surface discharge under atmospheric pressure had an important role for the decomposition of the indigo carmine molecules in water","PeriodicalId":369861,"journal":{"name":"2006 International Symposium on Discharges and Electrical Insulation in Vacuum","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123361940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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