INCREASE OF FIELDEMISSION OF ELECTRONS FROM W-TIPS BY EVAPORATION OF BERYLLIUM

被引：6

作者：

DECKER, U

MOLLENSTEDT, G

WURSTER, E

机构：

来源：

ZEITSCHRIFT FUR PHYSIK | 1969年 / 229卷 / 3-5期

关键词：

D O I：

10.1007/BF01396256

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The mean work function of tungsten determined from Fowler-Nordheim plots can be reduced from 4.5 to 2.5 eV by depositing a thin layer of evaporated beryllium and subsequent thermal treatment at 800 °C in a vacuum of 10-7 to 10-10 Torr. Electron and ion field emission patterns of tungsten tips with and without beryllium demonstrate the effect of the beryllium deposit. For an application of the tungsten tips with beryllium, the excellent stability and the high emissivity at low voltages are of interest. © 1969 Springer-Verlag.

引用

页码：316 / +

页数：1