Role of Ionizztion in Radiatin Annealing

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The role of ionization in the phenomenon of" radiation annealing" of graphite has been studied by using a I-MeV electron beam. Changes in the C-axis of a sample with a Hanford irradiation of 460 Mwd/ct were studied. Two thermal anneals of 4 hours each at 350{degree}C proved sufficient to complete the thermal annealing at this temperature. The samples were then irradiated for 7 {1I2} hrs at a temperature of 340 {degree}c. The samples received an irradiation of 47 microampere-hours, equivalent in ionization to an exposure of 200 Mwd/ct in a Hanford reactor. No changes were noted as a result of ... continued below

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McClelland, J.D.; Smith, A.W. & Senkovits, E.J. October 1, 1954.

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The role of ionization in the phenomenon of" radiation annealing" of graphite has been studied by using a I-MeV electron beam. Changes in the C-axis of a sample with a Hanford irradiation of 460 Mwd/ct were studied. Two thermal anneals of 4 hours each at 350{degree}C proved sufficient to complete the thermal annealing at this temperature. The samples were then irradiated for 7 {1I2} hrs at a temperature of 340 {degree}c. The samples received an irradiation of 47 microampere-hours, equivalent in ionization to an exposure of 200 Mwd/ct in a Hanford reactor. No changes were noted as a result of the electron bombardment. It is concluded that the ionization is not of major importance in radiation annealing.

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  • Report No.: NAA-SR-1025
  • Grant Number: AT-11-1-GEN-8
  • Office of Scientific & Technical Information Report Number: 966637
  • Archival Resource Key: ark:/67531/metadc928250

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Office of Scientific & Technical Information Technical Reports

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  • October 1, 1954

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 7, 2016, 8:45 p.m.

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McClelland, J.D.; Smith, A.W. & Senkovits, E.J. Role of Ionizztion in Radiatin Annealing, report, October 1, 1954; United States. (digital.library.unt.edu/ark:/67531/metadc928250/: accessed October 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.