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Visual Observations of Low-Energy Electron Beams

 

作者: D. Haneman,  

 

期刊: American Journal of Physics  （AIP Available online 1966）
卷期: Volume 34, issue 4  

页码: 289-290

 

ISSN:0002-9505

 

年代: 1966

 

DOI:10.1119/1.1972929

 

出版商: American Association of Physics Teachers

 

数据来源: AIP

 

摘要:

Electron beams of low energy (100–200 eV) and low current (<25 μA) are rendered visible by introducing appropriate quantities of mercury vapor, for example, by temporarily lowering a cooling trap. Paths of beams in the presence of objects are photographed.

 

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