オメガトロンによるTiイオンポンプの不活性ガスに対する排気能

概要

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The ion pump having titanium plane cathodes and operating with Pennings cold discharge principle was constructed. The magnetic flux was 1, 200 gauss and the high voltage between electrodes was about 4 KV. It is characteristics in reference to adsorption and re-desorption were measured especially for noble gases such as argon and helium. The instability for argon was also found in the same way as other papers had described. The omegatron type mass spectrometer, which had been developed at our laboratory, was used for analysis of desorption, and re-desorption of argon and helium from an ion pump after pumping operation had been stopped. The variations of speed of exhaust for such noble gases are described and our consideration for pumping mechanism is discussed.
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