HIGH-TEMPERATURE VAPOR-FILLED THERMIONIC CONVERTER. Quarterly Technical Progress Report, July 1 through September 30, 1962

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The post-test analysis of Cell E was completed with the exception of the microprobe analysis of the emitter structure. Interpretation of data from the analysis indicated the necessity of improving the cleanliness of future cell assemblies and especially the need for techniques to determine the emitter condition throughout final assembly. A 10 UC-90 ZrC emitter was installed in Cell F. Thermocouple installation and calibration and high-temperature vacuum emission tests are being conducted prior to the final closure of the cell. A second cell structure, Cell G, is on hand and an emitter will be installed pending the results of surface ... continued below

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Godsin, W. November 10, 1962.

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Description

The post-test analysis of Cell E was completed with the exception of the microprobe analysis of the emitter structure. Interpretation of data from the analysis indicated the necessity of improving the cleanliness of future cell assemblies and especially the need for techniques to determine the emitter condition throughout final assembly. A 10 UC-90 ZrC emitter was installed in Cell F. Thermocouple installation and calibration and high-temperature vacuum emission tests are being conducted prior to the final closure of the cell. A second cell structure, Cell G, is on hand and an emitter will be installed pending the results of surface preparation. Vacuum emission studies carried out under other contracts on three UC compositions, 10 UC--90 ZrC, 30 UC--70 ZrC, and 90 UC--10 ZrC, demonstrate that emission behavior is essentially independent of bulk uranium content. Intentional poisoning'' of the surface of sample emitters was produced by exposure to air at room temperature. These findings were substantiated on the Mark V-E and V-F emitters. It was concluded, therefore, that the emitter surface must be activated in addition to providing a clean cell environment during operation. (auth)

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  • Other Information: Orig. Receipt Date: 31-DEC-63

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  • Report No.: GA-3562(rev')
  • Report No.: AD-289805
  • Grant Number: AF33(657)-8563
  • DOI: 10.2172/4706785 | External Link
  • Office of Scientific & Technical Information Report Number: 4706785
  • Archival Resource Key: ark:/67531/metadc1027641

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  • November 10, 1962

Added to The UNT Digital Library

  • Oct. 18, 2017, 7:39 a.m.

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  • Dec. 20, 2017, 1:34 p.m.

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Godsin, W. HIGH-TEMPERATURE VAPOR-FILLED THERMIONIC CONVERTER. Quarterly Technical Progress Report, July 1 through September 30, 1962, report, November 10, 1962; San Diego, California. (digital.library.unt.edu/ark:/67531/metadc1027641/: accessed May 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.