EUROPIUM CHLORIDES; TERBIUM CHLORIDES; CATIONS; EMISSION SPECTRA;
ENERGY-LEVEL TRANSITIONS; FLUORESCENCE; QUENCHING; SOLUTIONS;
CHARGED PARTICLES; CHLORIDES; CHLORINE COMPOUNDS; DISPERSIONS;
EUROPIUM COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; IONS; LUMINESCENCE;
MIXTURES; ORGANIC COMPOUNDS; ORGANIC SULFUR COMPOUNDS; RARE EARTH …