Journal article
Unusual Luminescence from Crystals Containing Eu2+
Abstract
Luminescence at 368 nm from crystals containing Eu2+ exhibits the small spectral shifts from host to host typical of a parity-forbidden rare-earth transition, and yet has the emission oscillator strength (f≳1) of a highly allowed transition. It is improbable that this anomaly can be trivially resolved, e.g., in terms of measurement errors, stimulated emission, or impurity involvement.
Authors
Fork RL; Taylor DW; German KR; Kiel A; Buehler E
Journal
Physical Review Letters, Vol. 32, No. 14, pp. 781–783
Publisher
American Physical Society (APS)
Publication Date
April 8, 1974
DOI
10.1103/physrevlett.32.781
ISSN
0031-9007