| Numéro |
J. Phys. Radium
Volume 17, Numéro 8-9, août-septembre 1956
|
|
|---|---|---|
| Page(s) | 645 - 648 | |
| DOI | https://doi.org/10.1051/jphysrad:01956001708-9064500 | |
J. Phys. Radium 17, 645-648 (1956)
DOI: 10.1051/jphysrad:01956001708-9064500
Atomic Energy Research Establishment, Harwell
3350 - Fluorescence and phosphorescence; radiationless transitions, quenching (intersystem crossing, internal conversion).
Key words
luminescence -- luminescence of inorganic substances
DOI: 10.1051/jphysrad:01956001708-9064500
Centres luminogènes dans les fluorures activés à l'uranium
W.A. RuncimanAtomic Energy Research Establishment, Harwell
Abstract
The idea of localised charge compensation is introduced, and used to obtain probable atomic configurations in uranium-activated fluorides, particular attèntion being given to uranium-activated sodium fluoride. High- dispersion fluorescence and absorption spectra of various sodium fluoride phosphors are shown and discussed. There are large effects due to other impurities present and also to cooling down from 77 °K to 4,2 °K.
3350 - Fluorescence and phosphorescence; radiationless transitions, quenching (intersystem crossing, internal conversion).
Key words
luminescence -- luminescence of inorganic substances