Nanoseconds UV laser study of radiationless deactivation from upper electronic excited states in solution: Tb3+

✍ Scribed by Ch.R. Goldschmidt; Gabriel Stein; Elhanan Würzberg

• Publisher: Elsevier Science
• Year: 1975
• Tongue: English
• Weight: 589 KB
• Volume: 34
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(75)85525-4

✦ Synopsis

Using 25 ns half width pulses of a frequencyquadrupled Nd laser at 165 nm Tb3' perchlorate in D20 solution, or in b&ate glass, was excited to hip+ electronic s!ates and the fluorescence on transition from the upper 5 D3 and lower 'D+ excited states IO various sub-levels of the lowest 'F state were measured. The appropriate energy _gp spacing of :his rare earth ion results in lifctimcs which enabled us to cbserve the decay of 5D~ as well as the growing in and decay of 'D4. Radiationless processes from 'D3 direct to '1; or cascading to 'Da are discussed and correlated with previous theoretic4 and esperimental resulls on related systems involving the intern&on of the non-complercd solvated ion with the medium, and compared with relaied phenomena in glassy solids.