Structure and annealing of cation Frenkel defects in silver halides after irradiation with thermal neutrons

verfasst von

K. Dorr, H. J. Stockmann, H. Ackermann, B. Bader, W. Buttler, P. Freilander, H. Grupp, P. Heitjans, G. Kiese

Abstract

Polarised ¹¹⁰Ag (I=1, T₁2/=24.6 s) nuclei were produced in the reaction ¹⁰⁹Ag (n_pol, gamma ) ¹¹⁰Ag in AgCl and AgBr single crystals. The hyperfine interaction of the ¹¹⁰Ag nuclei with radiation-induced point defects has been studied. Positions and shapes of nuclear magnetic resonance curves could be explained assuming a random distribution of positively and negatively charged point defects. From this analysis and from additionally measured migration enthalpies, derived from annealing stages, the defects could be identified as cation Frenkel pairs. The nuclear quadrupole moment of ¹¹⁰Ag was determined as mod Q mod =0.24*10^-24 cm² by measuring the spin-lattice relaxation time of the ¹¹⁰Ag nuclei.

Externe Organisation(en)

Ruprecht-Karls-Universität Heidelberg

Typ

Artikel

Journal

Journal of Physics C: Solid State Physics

Band

15

Seiten

4437-4457

Anzahl der Seiten

21

ISSN

0022-3719

Publikationsdatum

1982

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Physik der kondensierten Materie, Ingenieurwesen (insg.), Physik und Astronomie (insg.)

Elektronische Version(en)

https://doi.org/10.1088/0022-3719/15/21/006 (Zugang: Unbekannt)