
TY  - JOUR
A1  - Runciman, WA 
A1  - Srinivasan, B 
T1  - Effects of X-irradiation on the Principal Uranium Centre in Alkali Fluorides
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 1988
VL  - 41
IS  - 4
SP  - 611
EP  - 622
KW  - 
UR  - https://doi.org/10.1071/PH880611 
N2  - 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, 0 and at 580·6 nm in N aF: 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. 
ER  -

