Effects of Oxygen on the Electron Current from a Heated Tungsten Field Emission Tip
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概要
- 論文の詳細を見る
The emission current from a tungsten tip was measured as a function of O_2 pressure (9.4×l0^<-11>〜3.9×l0^-9 Torr) and of tip temperature (1170〜l530°K). Following results have been shown: (1) With the elapse of time, a sequence of a minimum and a maximum appears in the emission current. (2) The minimum and the maximum decrease with increase in O_2 pressure. (3) The maximum decreases as the tip temperature is lowered or raised from 1290°K. (4) The time t_0 at which the maximum appears decreases as the O_2 pressure p increases. Linear relations hold between log p and log t_0; the slope of the straight line decreases with increase in the tip temperature. It is shown that a combined consideration of O_2 adsorption and build-up of tungsten oxides may account for the results.
- 社団法人応用物理学会の論文
- 1969-01-05
著者
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Sato Kiko
Electronic Engineering Deaprtment Himeji Institute Of Technology
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Matsuda Tetsuro
Department Of Electronics Himeji Institute Of Technology
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Matsuda Tetsuro
Electronic Engineering Department Himeji Institute Of Technology
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Takai Munezo
Electronic Engineering Department Himeji Institute Of Technology
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Niu Hirohiko
Electronic Engineering Deaprtment, Himeji Institute of Technology
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