Chemical effects of thermonuclear plasma interactions with insulator and metal surfaces

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From surface effects in controlled thermonuclear fusion devices and reactors meeting; Argonne, Illinois, USA (10 Jan 1974). The interactions of chemically reactive ions with insulator and metal surfaces result in specific chemical effects which must be considered in sputtering, blistering, trapping and re-emission processes involving these projectiles. Chemical sputtering and chemical trapping of ion beam flux are examples of chemical interaction effects which are discussed. Bombandment of a niobium surface by oxygen and nitrogen ions results in the formation of sputtered niobium oxide and nitride molecules. The molecular species are identified and characterized by means of their vibrational spectra using ... continued below

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Pages: 12

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Gruen, D.M. January 1, 1973.

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From surface effects in controlled thermonuclear fusion devices and reactors meeting; Argonne, Illinois, USA (10 Jan 1974). The interactions of chemically reactive ions with insulator and metal surfaces result in specific chemical effects which must be considered in sputtering, blistering, trapping and re-emission processes involving these projectiles. Chemical sputtering and chemical trapping of ion beam flux are examples of chemical interaction effects which are discussed. Bombandment of a niobium surface by oxygen and nitrogen ions results in the formation of sputtered niobium oxide and nitride molecules. The molecular species are identified and characterized by means of their vibrational spectra using isotopic substitution and matrix isolation techniques. Results using matrix isolation spectroscopy for both physical and chemical sputtering studies on materials of CTR interest are presented. Chemical trapping is evaluated as a method of chemically pumping the major fraction of the ion beam flux in ths divertor of next generation Tokamaks. Suitable trapping surfaces, surface lifetimes, and reprocessing schemes are discussed on the basis of available information on trapping efficiencies and thermochemical data for a variety of metals. (auth)

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Pages: 12

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  • Surface effects in controlled thermonuclear fusion devices and reactors meeting, Argonne, Illinois, USA, 10 Jan 1974

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  • Report No.: CONF-740104--8
  • Grant Number: None
  • Office of Scientific & Technical Information Report Number: 4326058
  • Archival Resource Key: ark:/67531/metadc1020432

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  • January 1, 1973

Added to The UNT Digital Library

  • Oct. 15, 2017, 10:09 p.m.

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  • Oct. 27, 2017, 3:33 p.m.

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Gruen, D.M. Chemical effects of thermonuclear plasma interactions with insulator and metal surfaces, article, January 1, 1973; Illinois. (digital.library.unt.edu/ark:/67531/metadc1020432/: accessed November 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.