Determination of Oxygen in Oxide Films by Neutron Activation Analysis

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Preliminary experiments have been conducted to evaluate the use of the nuclear reactions Li6 (n,α)H3 and O16(H13,n)F18 to determine the thickness of oxide films on metals. Sheets of thin paper and of aluminum, imbedded in powdered LiF, were irradiated with pile neutrons at a flux of 6 x 10^11 n/cm^2/sec and counted with an end-window proportional counter. A saturation activity of 1.87 hr F18 of 150 dis/min per microgram of oxygen was observed in the paper, but radioactivity due to impurities masked F18 in the aluminum. It is concluded that a 1 A (0.01 μgm/cm^2) oxide film thickness may be … continued below

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7 pages : illustrations

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Winchester, J. W.; Meyer, R. E.; Bate, L. C. & Leddicotte, G. W. July 15, 1959.

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  • Main Title: Determination of Oxygen in Oxide Films by Neutron Activation Analysis
  • Series Title: Oak Ridge National Laboratory Reports
  • Added Title: Oak Ridge National Laboratory Report CF-59-7-128

Description

Preliminary experiments have been conducted to evaluate the use of the nuclear reactions Li6 (n,α)H3 and O16(H13,n)F18 to determine the thickness of oxide films on metals. Sheets of thin paper and of aluminum, imbedded in powdered LiF, were irradiated with pile neutrons at a flux of 6 x 10^11 n/cm^2/sec and counted with an end-window proportional counter. A saturation activity of 1.87 hr F18 of 150 dis/min per microgram of oxygen was observed in the paper, but radioactivity due to impurities masked F18 in the aluminum. It is concluded that a 1 A (0.01 μgm/cm^2) oxide film thickness may be measured by a neutron irradiation at a flux of 10^14 n/cm^2/sec but chemical separation of induced radioactivity from the bulk metal is essential.

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7 pages : illustrations

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  • Report No.: CF-59-7-128
  • SuDoc Number: Y 3.At 7:22/CF-59-7-128
  • Accession or Local Control No: metadc1241066
  • Archival Resource Key: ark:/67531/metadc1241066

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  • July 15, 1959

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  • July 9, 2023, 5:45 p.m.

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  • Nov. 27, 2023, 6:09 p.m.

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Winchester, J. W.; Meyer, R. E.; Bate, L. C. & Leddicotte, G. W. Determination of Oxygen in Oxide Films by Neutron Activation Analysis, report, July 15, 1959; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc1241066/: accessed February 9, 2026), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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