New field-emission x-ray radiography system

被引：29
|
作者：
Senda, S
Tanemura, M
Sakai, Y
Ichikawa, Y
Kita, S
Otsuka, T
Haga, A
Okuyama, F
机构：
[1] Nagoya Inst Technol, Project XR, Showa Ku, Nagoya, Aichi 4668555, Japan
[2] Nagoya Inst Technol, Grad Sch Engn, Showa Ku, Nagoya, Aichi 4668555, Japan
[3] Nagoya City Univ, Sch Med, Dept Orthopaed Surg, Mizuho Ku, Nagoya, Aichi 4678601, Japan
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2004年 / 75卷 / 05期
关键词：
D O I：
10.1063/1.1711140
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A new field-emission x-ray radiography system based on our design is described. The key component of the system is a triode-type x-ray source with a built-in nanostructured electron source. The electron source is comprised of palladium-induced carbon nanofibers, which continue to field-emit electrons for more than 10 h at 2 X 10(-7) Torr with a fluctuation of +/-8%. Feedback control of the potential of the electron-extracting electrode, or the gate, reduces the current fluctuation to +/-0.5%, but this current regulation does little to improve the image resolution. Our system provides sharp x-ray images of both biological and nonbiological samples. (C) 2004 American Institute Of Physics.
引用
收藏
页码：1366 / 1368
页数：3
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