Surface areas by positron annihilation spectroscopy

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Positron annihilation spectroscopy (PAS) is a technique for measuring the length of time that a positron exists after being injected into a specific material. Lifetime measurements have been used for studying defects in metals. These imperfections affect the localized electron densities which in turn influence the lifetime of the positron before annihilation occurs. Electron density differences are also associated with surfaces. This paper describes the PAS technique and shows a correlation between positron annihilation intensities and surface areas of some fumed amorphous silicas.

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Pages: 7

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Dale, J.M.; Rosseel, T.M.; Hulett, L.D.; Venkateswaran, K.; Jean, Y.C. & Fuller, E.L. January 1, 1985.

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Description

Positron annihilation spectroscopy (PAS) is a technique for measuring the length of time that a positron exists after being injected into a specific material. Lifetime measurements have been used for studying defects in metals. These imperfections affect the localized electron densities which in turn influence the lifetime of the positron before annihilation occurs. Electron density differences are also associated with surfaces. This paper describes the PAS technique and shows a correlation between positron annihilation intensities and surface areas of some fumed amorphous silicas.

Physical Description

Pages: 7

Notes

NTIS, PC A02/MF A01.

Source

  • 28. Oak Ridge National Laboratory conference on analytical chemistry, Knoxville, TN, USA, 1 Oct 1985

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  • Other: DE86001340
  • Report No.: CONF-8510151-9
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 5187619
  • Archival Resource Key: ark:/67531/metadc1060892

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1985

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

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  • Feb. 1, 2018, 6:31 p.m.

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Dale, J.M.; Rosseel, T.M.; Hulett, L.D.; Venkateswaran, K.; Jean, Y.C. & Fuller, E.L. Surface areas by positron annihilation spectroscopy, article, January 1, 1985; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1060892/: accessed July 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.