1. (1) A. Kojima, M. Hanada, T. Inoue, NB Heating Technology Group, Y. Yamano, and S. Kobayashi : “Voltage Holding Capability of Large-Size Acceleration Grid with Multiple-Apertures and Multiple-Stage for Negative Ion Source”, J. Vac. Soc. Jpn., Vol. 56, No. 12, pp. 502-506 (2013) (in Japanese)
2. (2) R. Latham : High Voltage Vacuum Insulation, pp. 115-164, Academic Press, London (1995)
3. (4) S. Kobayashi, M. Kawata, Y. Yamano, and Y. Saito : “Investigation of Pulse Current Occurrence for Spark Conditioning Process of Ultra High Vacuum Gap”, Proc. 23rd Int. Symp. on Discharges and Electrical Insulation in Vacuum, pp. 39-42, Bucharest, Romania (2008)