The PSL increase factor for following room-temperature hydration for various times.
Visible absorption following x-irradiation for fresh and after hydration for the indicated hydration times. All spectra were recorded at room temperature.
TL spectra following irradiation at 10 K for (a) fresh , hydrated in an atmosphere of 99% humidity for (b) 30, (c) 60, and (d) 90 min; (e) pure CsBr and (f) the sample from (b), subsequently annealed at for 30 min.
(a) PSL intensity of hydrated for the indicated times, following thermal annealing at various temperatures for 30 min in dry . The intensities have been normalized to the prehydration intensity. (b) Mass loss of hydrated pure CsBr following annealing at various temperatures for 30 min in dry . The points at refer to (a) the PSL intensity before and after hydration (normalized to 1) and (b) the mass directly after hydration.
XRD patterns recorded with a Cu tube for (a) fresh , hydrated in an atmosphere of 99% humidity for (b) 30, (c) 60, and (d) 90 min. The ICCD data file for CsBr is also shown. All spectra were recorded at room temperature.
Mass of as it is allowed to hydrate in an atmosphere of 99% humidity at room temperature.
Schematic of (a) pure CsBr following irradiation showing a mobile -center and its associated electric field nearby an -center (left side) and the recombination of electron and hole after migration of the -center following thermal activation (middle). The symbols are explained in the key on the right side, (b) fresh following irradiation showing a -dipole, a mobile -center, and their associated electric fields nearby an -center (left side), and hole trapping by the dipole field (right side), (c) hydrated following irradiation showing a -dipole, mobile -center, orientated molecules, and the enhanced electric fields (left side) and hole trapping by the dipole field (right side).
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