The temperature dependence of the features which arise from the F-7(0.
1) double line arrow pointing right 5D3 absorption transitions in EuOC
l as seen by diffuse-reflectance spectroscopy has been investigated. T
he transitions shift linearly to higher energy with increasing tempera
ture. The ratio of the intensities of the transitions arising from the
F-7(0) state to those arising from the F-7(1) state also appears to b
e a linear function of temperature.