Published 1988 | Version v1
Journal article Metadata-only

Effects of X-irradiation on the principal uranium centre in alkali fluorides

Creators

  • 1. Australian National Univ., Canberra (Australia). Research School of Physical Sciences

Description

When fluorescing crystals of LiF and NaF containing hexavalent uranium and oxygen are X-irradiated the fluorescence is quenched and new absorption centres are created. There are strong absorption lines created at 562.8 nm in LiF:U, O and at 580.6 nm in NaF:U, O. These and other absorption lines have been studied by magnetic circular dichroism (MCD). A temperature independent MCD was observed, indicating an upper state degeneracy. A Fano antiresonance is observed in the absorption spectrum. No splitting was observed for the lines under uniaxial stress at 10 K. A model for these new centres is proposed

Additional details

Publishing Information

Journal Title
Australian Journal of Physics
Journal Volume
41
Journal Issue
4
Series
Aust. J. Phys.
Journal Page Range
611-621
ISSN
0004-9506
CODEN
AUJPA

INIS

Country of Publication
Australia
Country of Input or Organization
Australia
INIS RN
20043120
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ABSORPTION; ABSORPTION SPECTRA; CRYSTALS; FLUORESCENCE; IRRADIATION; LITHIUM FLUORIDES; SODIUM FLUORIDES; URANIUM; URANIUM COMPOUNDS; X RADIATION
Descriptors DEC
ACTINIDE COMPOUNDS; ACTINIDES; ALKALI METAL COMPOUNDS; ELECTROMAGNETIC RADIATION; ELEMENTS; EMISSION; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; IONIZING RADIATIONS; LITHIUM COMPOUNDS; LITHIUM HALIDES; LUMINESCENCE; METALS; PHOTON EMISSION; RADIATIONS; SODIUM COMPOUNDS; SPECTRA