Development and utilization of a retarding analyzer for field emission investigation of LaB6/W emitter

被引：0
|
作者：
Al-Tabbakh, Ahmed A. A. [1 ]
More, Mahendra A. [1 ]
Joag, Dilip S. [1 ]
机构：
[1] Univ Pune, Ctr Adv Studies Mat Sci & Condensed Matter Phys, Dept Phys, Pune, Maharashtra, India
来源：
TURKISH JOURNAL OF PHYSICS | 2013年 / 37卷 / 02期
关键词：
Field electron emission; Fowler-Nordheim theory; total energy distribution; retarding field analyzer;
D O I：
10.3906/fiz-1208-8
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A cold field emission from LaB6/W-coated cathodes has been investigated with a high-accuracy and low-cost retarding field analyzer instrument. Guidelines are provided for measurements of Fowler-Nordheim (FN) characteristics and total energy distributions using a single set-up and direct detection technique to address presumed shortages in sophisticated instrumental requirements for integral investigation. Electron emission from LaB6 nanoprotrusions, deposited on a tungsten microtip, was successfully investigated. Results emphasize a metallic behavior of the emitter in accordance with the FN theory. No size effects were observed for protrusions of 300 nm in radii.
引用
收藏
页码：219 / 228
页数：10
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