An Alpha Survey Radiac for Field Use

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Abstract: An alpha survey radiac employing a photomultiplier tube and scintillation detector has been developed. The instrument utilizes transistor circuitry and operates from two standard flashlight batteries. Four linear ranges are provided with full scale indication on the highest range corresponding to 10,000 g /m2 Pu2 39. The instrument was designed with .a separable probe and a telescoping extension for easier ground monitoring. A thorium metal source is attached to the instrument housing for checking instrument calibration in the field. The device conforms satisfactorily to the military requirements for altitude, humidity, vibration, shock, and storage. The operational battery life is ... continued below

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34 p. : ill. ; 28 cm.

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Sinclair, K. & Kiyoi, G. May 14, 1959.

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Abstract: An alpha survey radiac employing a photomultiplier tube and scintillation detector has been developed. The instrument utilizes transistor circuitry and operates from two standard flashlight batteries. Four linear ranges are provided with full scale indication on the highest range corresponding to 10,000 g /m2 Pu2 39. The instrument was designed with .a separable probe and a telescoping extension for easier ground monitoring. A thorium metal source is attached to the instrument housing for checking instrument calibration in the field. The device conforms satisfactorily to the military requirements for altitude, humidity, vibration, shock, and storage. The operational battery life is in excess of 40 hours. Instrument error at low temperatures slightly exceeds the 20% accuracy requirement; however, adequate measurements are readily made by using the thorium check source to provide a check point. Instrument response to low energy X-rays is excessive. However, tests indicate that a simple lead filter will eliminate this difficulty.

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34 p. : ill. ; 28 cm.

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Title Page indicates report number TR-317.

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Technical Report Archive and Image Library

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  • May 14, 1959

Added to The UNT Digital Library

  • July 14, 2017, 6:39 a.m.

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  • July 19, 2017, 2:10 p.m.

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Sinclair, K. & Kiyoi, G. An Alpha Survey Radiac for Field Use, report, May 14, 1959; San Francisco. Calif.. (https://digital.library.unt.edu/ark:/67531/metadc784321/: accessed July 23, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.