| 一种计算热阴极蒸发率的方法 |
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| 引用本文： | 郭文湘.一种计算热阴极蒸发率的方法[J].电子与信息学报,1984,6(2):166-171. |
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| 作者姓名： | 郭文湘 |
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| 作者单位： | 中国科学院电子学研究所 |
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| 摘 要： | 正 (一)引言 用晶体振荡法测量阴极蒸发率,一般是把阴极当作点蒸发源。这可能是为了便于计算蒸发率。在其它报道,例如文献3]中,阴极则被当作是平面元蒸发源,蒸发物接受器被当作是阴极面法向上某处的一个平面元。 本文采取有效措施克服了晶体因温度变化引起的振荡频率漂移(晶体谐振频率漂移)对测量蒸发率的影响。这不仅提高了测量蒸发物引起的振荡频率变化(晶体谐振频率变
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| 收稿时间： | 1981-08-11 |
A METHOD OF CALCULATING EVAPORATION RATE FOR THERMIONIC CATHODES |
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| Guo Wenxiang.A METHOD OF CALCULATING EVAPORATION RATE FOR THERMIONIC CATHODES[J].Journal of Electronics & Information Technology,1984,6(2):166-171. |
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| Authors: | Guo Wenxiang |
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| Affiliation: | Institute of Electronics; Academia Sinica |
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| Abstract: | An improved method using crystal oscillator for measuring the evaporation rate of ca-thodes is proposed, in which the distance between the crystal (substrate) and the cathode (source) is smaller than usually maintained. Thus more evaporation products from the cathode can be received by the crystal, and consequently the method can be used for measuring lower evaporation rate. Formulae for calculating the evaporation rate are derived, and the precision of the these is given. In this paper a method to prevent the resonant frequency change caused by the change of temperature is also given. The experimental result shows that one Hertz resonant frequency shift can be detected while the oscillation frequency is 5 MHz. |
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