An investigation of the Ba Sr Tungstate cathode was made. It was found that when the tungstate was prepared at 1050℃ for 2 hours the product was stable in the atmosphere, and storing in air with relative humidity of below 70% for 200 hours, its increase in weight was only 0.2%. Cathodes made this way have a reasonably long life.
R F Power Tubes,Two Advances Speeding 10 Meg Klystron Tube, The Electronic Eng. Lneer's Design Magazine, 11(1966), 137.[3]R.J. Bondley, AD850, 447.[4]G. Thernber, AD-A009114.[5]A. F. Wynn, AD-A015539.[6]D. R. Stanley and F. Kaisel, Microwave J. 20(1977), 23.[7]J. Ralph and R. J. Bondley, Patent Secification 1,097, 424.
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