FIELD-EMISSION FROM AN ELLIPTIC BOSS - EXACT VERSUS APPROXIMATE TREATMENTS

被引：11

作者：

JENSEN, KL

ZAIDMAN, EG

机构：

[1] Naval Research Laboratory, Washington

来源：

APPLIED PHYSICS LETTERS | 1993年 / 63卷 / 05期

关键词：

D O I：

10.1063/1.109934

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Field emission from tips, in comparison to planar surfaces, is complicated by current enhancement effects and changes in the image charge. We show that the approximations typically used for the calculation of the transmission coefficient are inappropriate for small spherical surfaces but adequate for elliptical surfaces. A simple analytical formula for the average emitting area may be derived based on the Fowler-Nordheim equation under conditions of field emission. By use of the elliptical approximation, a simple scale factor is sufficient to deal with spherical and pointed tips.

引用

收藏

页码：702 / 704

页数：3

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