Photodetachment cross section ofH−in a gradient electric field

Resonances in the photodetachment cross section of Au -

This paper reports the observation of autodetaching resonances in photoelectron spectroscopy of Au according to the process Au2 + hv=:> (Aur ) * => Au 2 + e . They appear as sharp features superimposed upon a nearly constant signal associated with direct photodetachment process from Aur :Au + hv=>Au2 + e . By altering the cluster expansion conditions, the dimer anion temperature can be varied. ...

Resonance structure in the Li- photodetachment cross section.

We report on the first observation of resonance structure in the total cross section for the photodetachment of Li −. The structure arises from the autode-taching decay of doubly excited 1 P o states of Li − that are bound with respect to the 3p state of the Li atom. Calculations have been performed for both Li − and H − to assist in the identification of these resonances. The lowest lying reso...

A Cross-Section of the Field

We present an overview of the literature relating to computational intelligence (also commonly called artificial intelligence) and business applications, particularly the journal-based literature. The modern investigation into artificial intelligence started with Alan Turing who asked in 1948 if it would be possible for “machinery to show intelligent behaviour.” The computational intelligence d...

Sign of the Electric Field Gradient Tensor

Electric field gradient effects in raman spectroscopy.

Raman spectra of materials subject to strong electric field gradients, such as those present near a metal surface, can show significantly altered selection rules. We describe a new mechanism by which the field gradients can produce Raman-like lines. We develop a theoretical model for this "gradient-field Raman" effect, discuss selection rules, and compare to other mechanisms that produce Raman-...