RECOMBINATION EMISSION IN TUNGSTEN AND NIOBIUM SINGLE CRYSTALS.

被引：0
|
作者：
Mashtakova, V.A. [1 ]
Shishkin, B.B. [1 ]
机构：
[1] Moscow State Univ, Dep of, Electronics, Moscow, USSR, Moscow State Univ, Dep of Electronics, Moscow, USSR
来源：
Moscow University Physics Bulletin (English Translation of Vestnik Moskovskogo Universiteta, Fizik | 1984年 / 39卷 / 02期
关键词：
CATHODES - ELECTRON TUBES; DIODE - NIOBIUM AND ALLOYS - Surfaces;
D O I：
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学科分类号：
摘要：
Anomalies are observed in the current-voltage characteristics of plane-symmetric diodes with thermocathodes from transition-metal monocrystals at temperatures T greater than THETA //t//e, where THETA //t//e is the characteristic temperature of thermal emission. The authors study the temperature dependences of the emission currents in the range DELTA T which includes THETA //t//e, for the (100) surfaces of tungsten, and the (110) surfaces of niobium. For T equals THETA //t//e, the Richardson line for the (100) surface of tungsten has a discontinuity, and the Richardson emission parameters increase discontinuously. The effective work function increases. For the (110) surface of a niobium single crystal, the Richardson parameters remain constant.
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页码：88 / 90
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