Journal or Book Title
Physical Review Letters
Energy distribution curves from La and Pr were taken from 32 to 80 eV photon energies. Above 50 eV the valence-band photoemission in La is very weak, implying that previous studies of Ce have underemphasized the 4f contributions. Pr exhibits two peaks attributable to 4f electrons, similar to the structures in Ce.
The American Physical Society
Wieliczka, David Michael; Olson, C. G.; and Lynch, David W., "Valence-Band Photoemission in La and Pr: Connections with the Ce Problem" (1984). Physics and Astronomy Publications. 64.