The Stokes and anti-Stokes luminescence spectra characteristic of the
trihalides of Cm3+ exhibit narrow features arising from transitions be
tween the 5f electronic levels of the Cm3+ ion. The low background ass
ociated with anti-Stokes luminescence has allowed our observation of e
mission features which are ordinarily obscured by matrix scatter and/o
r matrix luminescence. Comparisons of the emission spectra of the four
curium trihalides and corresponding absorption spectra are presented
and discussed.