Continued studies of calorimeter performance at the Lawrence Livermore Laboratory

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Calibrations of two calorimeters used for tritium and plutonium assays were made. Data from three new standards of about 0.5, 1, and 5 W were added to the results of a previous report and analyzed together. The accuracies of both calorimeters appear to fall within the specified 0.5 percent, although the data now available for the large calorimeter is insufficient to permit a more definite conclusion. An expression of the bias correction for each calorimeter with respect to the sample power cannot be determined. The bias of the medium thermopile-type calorimeter tends to be positive, however, and that of the ... continued below

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16 p.

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Steward, S.A. & Tsugawa, R.T. November 17, 1975.

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Description

Calibrations of two calorimeters used for tritium and plutonium assays were made. Data from three new standards of about 0.5, 1, and 5 W were added to the results of a previous report and analyzed together. The accuracies of both calorimeters appear to fall within the specified 0.5 percent, although the data now available for the large calorimeter is insufficient to permit a more definite conclusion. An expression of the bias correction for each calorimeter with respect to the sample power cannot be determined. The bias of the medium thermopile-type calorimeter tends to be positive, however, and that of the large resistance-bridge design appears to be negative. (auth)

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16 p.

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Dep. NTIS

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  • Other Information: Orig. Receipt Date: 30-JUN-76

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  • Report No.: UCRL--51964
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/4134629 | External Link
  • Office of Scientific & Technical Information Report Number: 4134629
  • Archival Resource Key: ark:/67531/metadc871534

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • November 17, 1975

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  • Sept. 16, 2016, 12:32 a.m.

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  • Oct. 12, 2017, 2:08 p.m.

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Steward, S.A. & Tsugawa, R.T. Continued studies of calorimeter performance at the Lawrence Livermore Laboratory, report, November 17, 1975; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc871534/: accessed December 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.