Physics group process report, April 1--30, 1948

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The high rate neutron scaler has been removed from service for repair. Consequent study has led to the discovery of a double counting effect. The vacuum system of the vacuum balance is being redesigned and rebuilt so as to obtain a higher vacuum. The vapor pressure of postum was measured with a quartz sickle gauge between 0.3 and 90 mm. of mercury pressure at temperatures between 430{degrees} and 745{degrees}C. The least square representation of the data is the following: Log p = {sub T}{und 5377.8} + 7.2345 where p is the pressure in mm. of mercury and T is the ... continued below

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18 p.

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Knauss, H.P. December 31, 1948.

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Description

The high rate neutron scaler has been removed from service for repair. Consequent study has led to the discovery of a double counting effect. The vacuum system of the vacuum balance is being redesigned and rebuilt so as to obtain a higher vacuum. The vapor pressure of postum was measured with a quartz sickle gauge between 0.3 and 90 mm. of mercury pressure at temperatures between 430{degrees} and 745{degrees}C. The least square representation of the data is the following: Log p = {sub T}{und 5377.8} + 7.2345 where p is the pressure in mm. of mercury and T is the absolute temperature. From this least square equation the extrapolated boiling point is 962.1{degrees}1{degrees}C. and the latent heat of vaporization is 24,597 calories per mole. A single crystal study of potassium chloride is being made since it is the crystal which is most nearly like a simple cubic lattice. The Geiger counter X-ray spectrometer belonging to Unit I was set up and a recorder attached so that certain patterns could be obtained more quickly. Continuation of the effusion experiment showed that data obtained were violently Inconsistent. The experimental work Is being dropped. At the end of the Physics Group Progress Report section, a brief report is Included which describes the exhibits designed and constructed for ``The Miami Valley Atomic Energy Show`` at Miamisburg, Ohio, April 29, 30, and May l, 1948 by members of the Physics Group.

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18 p.

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OSTI as DE96001496

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  • Other Information: PBD: [1948]

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  • Other: DE96001496
  • Report No.: MLM--85
  • Grant Number: AC24-88DP43495
  • DOI: 10.2172/115758 | External Link
  • Office of Scientific & Technical Information Report Number: 115758
  • Archival Resource Key: ark:/67531/metadc620743

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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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Creation Date

  • December 31, 1948

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • Nov. 24, 2015, 7:22 p.m.

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Knauss, H.P. Physics group process report, April 1--30, 1948, report, December 31, 1948; United States. (digital.library.unt.edu/ark:/67531/metadc620743/: accessed June 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.