Sputtering of vanadium and niobium under 14.1 MeV neutron impact

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The recent studies of particle emission from cold-rolled and annealed niobium under 14.1-MeV neutron impact were extended to a heavily etched, polycrystalline niobium surface and to cold worked vanadium surfaces with different degrees of microstructure. The type and amount of material released and deposited on collector surfaces facing the irradiated targets were determined by three analytical techniques. Two types of deposits were found for certain types of surfaces--one in the form of chunks; the other as a fractional atom layer covering the surface. The chunks vary significantly in size. The small number of chunks observed suggests that the ejection of ... continued below

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13 p.

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Kaminsky, M. & Das, S.K. January 1, 1976.

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Description

The recent studies of particle emission from cold-rolled and annealed niobium under 14.1-MeV neutron impact were extended to a heavily etched, polycrystalline niobium surface and to cold worked vanadium surfaces with different degrees of microstructure. The type and amount of material released and deposited on collector surfaces facing the irradiated targets were determined by three analytical techniques. Two types of deposits were found for certain types of surfaces--one in the form of chunks; the other as a fractional atom layer covering the surface. The chunks vary significantly in size. The small number of chunks observed suggests that the ejection of chunks is a relatively rare event in comparison to the total number of primary knock-on events produced by 14-MeV neutrons in near surface regions. Estimates of the total sputtering yield based on the chunk deposits and on the fractional atom layer deposit will be given. (auth)

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13 p.

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Dep. NTIS

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  • 2. international conference on surface effects in controlled fusion devices, San Francisco, California, United States of America (USA), 16 Feb 1976

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  • Report No.: CONF-760209--16
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 4067507
  • Archival Resource Key: ark:/67531/metadc865161

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1976

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  • Sept. 16, 2016, 12:32 a.m.

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  • Oct. 11, 2017, 3:38 p.m.

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Kaminsky, M. & Das, S.K. Sputtering of vanadium and niobium under 14.1 MeV neutron impact, article, January 1, 1976; Illinois. (digital.library.unt.edu/ark:/67531/metadc865161/: accessed November 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.