RADIATION DOSIMETRY OF A GRAPHITE MODERATED RADIUM BERYLLIUM SOURCE.

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The Brookhaven National Laboratory Sigma Pile a Radium-Beryllium neutron source imbedded in a cube of graphite blocks. The pile is approximately 2.13 m on four sides and is 3.07 m high. Absolute and relative thermal neutron flux measurements have been made using gold and indium foils, which were both bare and cadmium covered. Thermo-luminescent dosimeters were used to determine the neutron and gamma-ray dose rates in the pile. Gamma-ray dose rate measurements have also been made in the air outside of the pile, while the Radium-Beryllium neutron source was being withdrawn from the pile. The Monte Carlo MCNP code has ... continued below

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8 pages

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HOLDEN,N.E.; RECINIELLO,R.N.; HU,J.P. & RORER,D.C. August 18, 2002.

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Description

The Brookhaven National Laboratory Sigma Pile a Radium-Beryllium neutron source imbedded in a cube of graphite blocks. The pile is approximately 2.13 m on four sides and is 3.07 m high. Absolute and relative thermal neutron flux measurements have been made using gold and indium foils, which were both bare and cadmium covered. Thermo-luminescent dosimeters were used to determine the neutron and gamma-ray dose rates in the pile. Gamma-ray dose rate measurements have also been made in the air outside of the pile, while the Radium-Beryllium neutron source was being withdrawn from the pile. The Monte Carlo MCNP code has been used to calculate the coupled neutron-photon transport. Measured dose rates at various locations agreed with the calculated values within 5% to 15%.

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8 pages

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  • 11TH INTERNATIONAL SYMPOSIUM ON REACTOR DOSIMETRY, BRUSSELS (BE), 08/18/2002--08/23/2002

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  • Report No.: BNL--69337
  • Grant Number: AC02-98CH10886
  • Office of Scientific & Technical Information Report Number: 801698
  • Archival Resource Key: ark:/67531/metadc743209

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  • August 18, 2002

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  • Oct. 19, 2015, 7:39 p.m.

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  • Nov. 9, 2015, 1:59 p.m.

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HOLDEN,N.E.; RECINIELLO,R.N.; HU,J.P. & RORER,D.C. RADIATION DOSIMETRY OF A GRAPHITE MODERATED RADIUM BERYLLIUM SOURCE., article, August 18, 2002; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc743209/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.