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

authored by: 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.
External Organisation(s): Heidelberg University
Type: Article
Journal: Journal of Physics C: Solid State Physics
Volume: 15
Pages: 4437-4457
No. of pages: 21
ISSN: 0022-3719
Publication date: 1982
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Condensed Matter Physics, Engineering(all), Physics and Astronomy(all)
Electronic version(s): https://doi.org/10.1088/0022-3719/15/21/006 (Access: Unknown)