Fluorescence studies of neptunium and plutonium hexafluoride vapors

Journal Article · Mon Mar 01 04:00:00 EST 1982 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.443223· OSTI ID:5590989

Beitz, J V; Williams, C W; Carnall, W T

The first observation of fluorescence from gas phase, electronically excited, transuranic hexafluorides is reported. Fluorescence peaking at 1360 nm was observed from /sup 237/NpF/sub 6/ gas excited at 1064 nm. The measured fluroescence lifetime was 3.53 +- 0.01 ms, independent of NpF/sub 6/ pressure. Fluourescence peaking at 2300 nm has been observed from /sup 242/PuF/sub 6/ gas excited at 1064 nm. The measured fluorescence lifetime was 204 +- 12 ..mu..s, independent of PuF/sub 6/ pressure. In both cases the emitting state is assigned as a vibronic component of the first excited electronic state of the hexafluoride based on previously reported absorption spectra and energy level calculations. Fluorescence in the 1900 and 4800 nm region was observed from PuF/sub 6/ gas excited at 532 nm. The lifetime of this fluorescence was 86 +- 4. The emitting state giving rise to this shorter-lived fluorescence was not identified. Estimated fluorescence quantum yields are reported.

• Research Organization: Argonne National Lab., IL
• OSTI ID: 5590989
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 76:5; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ACTINIDE COMPOUNDS
DATA
EFFICIENCY
ELECTROMAGNETIC RADIATION
EXPERIMENTAL DATA
FLUIDS
FLUORESCENCE
FLUORIDES
FLUORINE COMPOUNDS
GASES
HALIDES
HALOGEN COMPOUNDS
INFORMATION
INFRARED RADIATION
LIFETIME
LUMINESCENCE
NEPTUNIUM COMPOUNDS
NEPTUNIUM FLUORIDES
NUMERICAL DATA
PLUTONIUM COMPOUNDS
PLUTONIUM FLUORIDES
QUANTUM EFFICIENCY
RADIATIONS
TRANSURANIUM COMPOUNDS
VAPORS