NONEXPONENTIAL DECAY OF LUMINESCENCE OF RARE-EARTH CHELATES

Journal Article · Sun Mar 15 00:00:00 EST 1964 · Journal of Chemical Physics (U.S.)

DOI:https://doi.org/10.1063/1.1725402· OSTI ID:4057735

Kuhlman, C W; Weissman, S I

Studies were made on the nonexponential decay of luminescence of europium complexes of picrate, dibenzoylmethide (DB), and thenoyltrifluoracetonate (TTA) and the DB and TTA compounds of terbium. Solutions in methylcyclohexane, ethanol, and toluene were studied in the temperature range 77-300 deg K. The terbium compounds and the europium picrate yielded simple exponential decays under all conditions, with decay constants of the order 500 x 10/sup -6/ sec in rigid glasses and 30 x 10/sup -6/ sec in fluids at room temperature. The decays of the luminescences of the DB and TTA compounds of europium were not exponential at low temperatures in rigid media. (P.C.H.)

• Research Organization: Washington Univ., St. Louis
• Sponsoring Organization: USDOE
• NSA Number: NSA-18-016089
• OSTI ID: 4057735
• Journal Information: Journal of Chemical Physics (U.S.), Vol. Vol: 40; Other Information: Orig. Receipt Date: 31-DEC-64
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CHEMISTRY
MATHEMATICS
NEUTRON FLUX
NUCLEAR REACTIONS
PRODUCTION
TRITIUM