Structure and annealing of (n, γ)-Induced point defects in CaF2

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • H. J. Stöckmann
  • D. Dubbers
  • M. Grupp
  • H. Grupp
  • H. Ackermann
  • P. Heitjans

Externe Organisationen

  • Ruprecht-Karls-Universität Heidelberg
  • Institut Laue-Langevin
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Details

OriginalspracheEnglisch
Seiten (von - bis)19-27
Seitenumfang9
FachzeitschriftZeitschrift für Physik B Condensed Matter and Quanta
Jahrgang30
Ausgabenummer1
PublikationsstatusVeröffentlicht - März 1978
Extern publiziertJa

Abstract

Neutron activated20F nuclei (T1/2=11 s) in CaF2 serve for two purposes: first they produce well defined point defects by their (n, γ)-production mechanism, second, they act as probes to detect the properties of these defects in a β- and γ-ray detected nuclear magnetic resonance experiment. Below about 70 K an interstitial defect is observed due to a quadrupolar splitting of the20F-NMR line. The defect induced electric field gradient is oriented along the 〈111〉-axis of the crystal and causes a quadrupole coupling constant e2qQ/h=-2.0(1) MHz at the20F site. The defect anneals above 70 K with an Arrhenius like temperature dependence corresponding to an activation energy EM=0.17(4) eV.

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Zitieren

Structure and annealing of (n, γ)-Induced point defects in CaF2. / Stöckmann, H. J.; Dubbers, D.; Grupp, M. et al.
in: Zeitschrift für Physik B Condensed Matter and Quanta, Jahrgang 30, Nr. 1, 03.1978, S. 19-27.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Stöckmann HJ, Dubbers D, Grupp M, Grupp H, Ackermann H, Heitjans P. Structure and annealing of (n, γ)-Induced point defects in CaF2. Zeitschrift für Physik B Condensed Matter and Quanta. 1978 Mär;30(1):19-27. doi: 10.1007/BF01323665
Stöckmann, H. J. ; Dubbers, D. ; Grupp, M. et al. / Structure and annealing of (n, γ)-Induced point defects in CaF2. in: Zeitschrift für Physik B Condensed Matter and Quanta. 1978 ; Jahrgang 30, Nr. 1. S. 19-27.
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AU - Stöckmann, H. J.

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