Double excitation transitions in Mn2+ -doped alkali halides

4 págs.; 4 figs.It is shown in this work that the room-temperature excitation spectra of as-grown crystals of LiF, NaF, NaCl, KCl, and KBr doped with Mn2+ reveal the existence of double excitation peaks. These peaks are related to the formation of precipitated phases containing Mn2+ in the alkali halide lattice. In the case of LiF:Mn2+ the position of the [A14(G), E4(G)] and T14(G) peaks suggests an anomalously small Mn2+- F- distance for the precipitated phase. © 1983 The American Physical Society.Financial support by the Comision Asesora para la Investigacion Cientifica y Tecnica, is gratefully acknowledged.Peer Reviewe

Editorial

This special issue includes twenty-three extended, reviewed and revised papers originally presented at the Eleventh International Conference on Computational Structures Technology (CST2012) and the Eighth International Conference on Engineering Computational Technology (ECT2012) held concurrently in Dubrovnik, Croatia, 4–7 September 2012. The CST2012 Young Researcher Best Paper Prize was presented to Dr J.-W. Simon, of the RWTH Aachen University, Germany, for his paper “Limit States of Structures in n-dimensional Loading Spaces with Limited Kinematical Hardening”. The ECT2012 Young Researcher Best Paper Prize was presented to Dr L. Barbié, of CEA-Cadarache, France, for the paper “An Automatic Multilevel Refinement Technique based on Nested Local Meshes for Nonlinear Mechanics” by L. Barbié, I. Ramière and F. Lebon. The CST2012 Prize Paper is the first paper included in this special issue; while the ECT2012 Prize paper is the second paper included in this issue. The standard of the papers considered for these prizes was very high and the conference editors wish to thank the members of the conference editorial board for their work in considering all the applicants (see Fig. 1)