Photoelectron spectra of cold Ti-n(-) anion clusters for n=1- 130 were investigated at four detachment photon energies: 532, 355, 266, and 193 nm. Improved spectral resolution provides well-resolved electronic structures of the clusters, and the spectral evolution as a function of cluster size was probed systematically. Narrow and well-resolved spectral features were observed at n=13, 19, and 55, consistent with the high symmetry icosahedral structures proposed for these clusters. The measured electron affinities as a function of size in the studied size range do not extrapolate to the bulk work function, indicating that Ti clusters with n=130 may not assume the bulk structure. (C) 2003 American Institute of Physics.
Revised: March 2, 2004 |
Published: February 1, 2003
Citation
Liu S., H.J. Zhai, M.E. Castro, and L.S. Wang. 2003.Photoelectron Spectroscopy of Ti-n(-)Clusters (n=1-130).Journal of Chemical Physics 118, no. 5:2108-2115.PNNL-SA-39729.