Excitation Studies in the Rare Gases and Simple Molecules Using a High Resolution Electron Spectrometer.
A high resolution electron spectrometer has been used to perform electron scattering studies with both atomic and molecular targets. Work has been done on negative ion resonance production in the rare gases and on polarization correlation measurements in diatomic molecules. High resolution metastable excitation function measurements have been made in the doubly excited state region for Ne, Ar and Kr targets. Comparison of the spectra obtained suggests that the gross features are due to negative ion resonances. Previous techniques which have proved successful in the identification and classification of resonances in the rare gases at energies below the first ionization threshold are shown to be applicable in this energy region also and assignments for a number of resonances are suggested. Where appropriate, comparisons have been made with data obtained by other techniques. The modified Rydberg formula has been used to predict energies for both doubly and triply excited configurations. Polarization correlation measurements have been made with the target molecules N(,2) and H(,2). In H(,2) the radiation resulting from excitation of the C('1)(PI)(,u) v' = 0 band was studied. In N(,2), excitation of the. (DIAGRAM, TABLE OR GRAPHIC OMITTED...PLEASE SEE DAI). band was studied. Pseudo-threshold polarization measurements were made for these targets and comparisons with theoretical predictions were made. Systematic polarization correlation data for electron scattering angles up to 20 degrees have also been obtained and preliminary attempts have been made to analyze these.
- Pub Date:
- Physics: Atomic