Laser-induced discharge characteristics in low vacuum with residual helium gas and air

Ōkubo, H.; Ota, K.; Yuasa, S.; Hayakawa, Naoki; Hikita, Masayuki

doi:10.1109/deiv.1996.545451

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…Therefore, the establishment of the electrical insulation is needed with taking the charging on the dielectric surface into consideration in space. But, in vacuum, charging phenomena on the dielectrics are very complicated and the charging mechanism have been much investigated [7, 81. From above points of view, we have been investigating the charging and discharging mechanisms on a dielectric surface in vacuum [9]. In this paper, we make electrostatic charge on a dielectric surface at pressure range of Pa. As a charging process, we apply two different methods; electron irradiation by electron beam and field emission by triple junction under negative dc high voltage application.…”

Section: Introductionmentioning

confidence: 99%

Charging characteristics on dielectric surface by different charging process in vacuum

Yamano

Ohashi

Katō

et al.

Proceedings ISDEIV. 18th International Symposium on Discharges and Electrical Insulation in Vacuum (Cat. No.98CH36073)

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This paper describes the charging characteristics on a dielectric surface in vacuum by different types of charging process; electron irradiation by electron beam and field emission by triple junction under negative dc high voltage ap pl i c a t i on. We measured 2-d i men s ional distribution of electrostatic charging on the dielectric surface in-situ. Experimental results revealed that the negative charge distribution by the electron beam had a conical shape all over the surface. On the other hand, for triple junction, it was an acute distribution around the triple junction. Moreover, we quantitatively investigated the difference of the 2-dimensional charging distribution using some shape parameters between above mentioned two charging processes. In addition, we examined the time decay characteristics of the surface potential on the dielectrics in vacuum.

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Section: Introductionmentioning

confidence: 99%

Charging characteristics on dielectric surface by different charging process in vacuum

Yamano

Ohashi

Katō

et al.

Proceedings ISDEIV. 18th International Symposium on Discharges and Electrical Insulation in Vacuum (Cat. No.98CH36073)

Self Cite

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Laser-induced plasma and laser-triggered discharge characteristics in low vacuum

Ōkubo

Ohashi²,

Yamano³

et al.

Proceedings ISDEIV. 18th International Symposium on Discharges and Electrical Insulation in Vacuum (Cat. No.98CH36073)

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This paper describes the characteristics of laser-induced plasma and laser-triggered discharge in low vacuum. Experimental results revealed that laser-induced plasma characteristics, such as plasma light intensity, probability of plasma production and plasma profile highly depended on residual gas pressure. Furthermore, the laser-induced plasma gives rise to discharge generation under lower voltage than the static breakdown. These experimental results will be fundamental data to clarify the relation among outgassing, charging and discharging in vacuum.

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Laser-induced discharge characteristics in low vacuum with residual helium gas and air

Cited by 2 publications

References 5 publications

Charging characteristics on dielectric surface by different charging process in vacuum

Charging characteristics on dielectric surface by different charging process in vacuum

Laser-induced plasma and laser-triggered discharge characteristics in low vacuum

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