Title of article
Life test evaluation of 411M cathode for highly reliable satellite TWTs
Author/Authors
Akira Chiba، نويسنده , , Yasuhiro Akiyama، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 1999
Pages
6
From page
120
To page
125
Abstract
We evaluated 218 411M cathodes in a cathode test tube CTT.through continuous operation. These cathodes have been
evaluated at four operating temperatures between 910 and 1100 Cb, and six types of current density from 0.6 to 5.0 Arcm2
for 100,000 h or more. The total accumulated life test time was 7,513,400 h. We formulated a life prediction model based on
optimum operating temperature and cathode current density. The results of evaluation verified the validity of the life
prediction model, which showed that the 411M cathode has a life of more than 200,000 h 22.8 years.at a current density of
less than 2.0 Arcm2. q1999 Published by Elsevier Science B.V. All rights reserved.
Keywords
Life , Traveling-wave tubes , Work function , Microwave tubes , M cathode , Low temperature techniques
Journal title
Applied Surface Science
Serial Year
1999
Journal title
Applied Surface Science
Record number
995582
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