Alkali photoelectron spectra

If we ignore for the moment this deeper ionization, the 584 A photoelectron spectrum of the alkali halides should be very simple— ir and a peaks, separated by a fraction of an electron volt, with the additional proviso that the tt orbital is split due to spin-orbit interaction. The detailed structure of the photoelectron spectrum, and its interpretation, have however been the subject of some controversy. Experimentally, the dispute concerns the presence of one, two or three peaks in the valence region. Those who advocate three peaks (14) interpret them as 3/2 1/2 approach ( ) has been to... 

X-Ray photoelectron spectroscopy of the N(ls) core-electron binding energies of azides containing the alkali metals indicates that the electronic structure of the Nj ion is largely unchanged from compound to compound, and the differing thermal stabilities cannot be explained on the basis of different electronic structure. The N(ls) spectrum consists of two peaks in the vicinity of 398.5—404.9 eV separated by ca. 4.4 eV, as shown in the upper part of Table 6. The peak for terminal N is slightly broader than that... 

There have been numerous photodetachment studies of small cluster anions, and we now give some examples. Noble metal clusters (Cu, Ag,7, Au , n = 1-10) have been studied by Ho et al. [23], who resolved vibrations in all three dimers. Studies of alkali metal cluster anions have included those of Na ( = 2-5), K (n = 2-19), RbJ 3, and CS2-3 [24,25]. Carbon cluster anions C,T have photoelectron spectra that are consistent with linear chains for n = 2-9 and monocyclic rings for n = 10-29 [26]. Photoelectron spectra of Sb and Bi to n = 4 [27] show rich vibrational structure for the dimers, and the spectra of the larger clusters could be interpreted in terms of ab initio calculations. The threshold photodetachment (zero electron kinetic energy, ZEKE) spectrum of Si4 [28] shows a progression of well-resolved transitions between the ground state of the rhombic anion (Dzh, and vibrational levels of the first excited... 

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