The nature of the emission transition of the octahedral uranate group

✍ Scribed by J.Th.W. De Hair; G. Blasse

• Book ID: 103012068
• Publisher: Elsevier Science
• Year: 1975
• Tongue: English
• Weight: 355 KB
• Volume: 36
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(75)85699-5

✦ Synopsis

Decay times of the green luminescence of U6* in oxides with perov&ite structure are reported. The intluenc~ of the site symmetry is found to be considerable. The temperature depdndencc of the decay time gives evidence for a coupling of the electronic transition Wh a phonon of about 200 cm -' in the excited s~atc. The results show the emission to originate from a Paris-forbidden transition, vibronically allowed by coupling with vibrations of unserade symmetry.