The evolution of electronic structure in lanthanide metal clusters: Threshold photoionization spectra of Cen and Prn.
Chemistry Division, Argonne National Laboratory,
Argonne, IL 60439, USA
Corresponding author: a email@example.com
Accepted: 10 March 1998
Published online: 15 June 1998
The photoionization spectra of Pr2-Pr21 and Ce2-Ce17 have been measured near threshold. The ionization potentials (IPs) of and vary discontinuously with size, but trend downward toward the work function of the bulk metals. In general, the IPs of cerium clusters display more variation than those of praseodymium clusters. The sudden discontinuities observed in the IPs of both and is akin to that displayed by clusters of transition metal atoms, suggesting that as in transition metal clusters, the rapid evolution in geometric structure with size is the source of these discontinuities.
PACS: 36.40.-c – Atomic and molecular clusters / 33.20.Lg – Ultraviolet spectra / 33.80.Eh – Autoionization, photoionization, and photodetachment
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1998