Coherent excitation of autoionizing resonances
- University of Kentucky Research Foundation, Lexington, KY (US)
An electron-electron coincidence [or (e,2e)] technique was used to investigate atomic ionization by electron impact in the neighborhood of autoionizing resonances. Differing binary (I{sup +}) and recoil (I{sup -}) lobe intensities in coplanar (e,2e) ejected-electron angular distributions were analyzed in terms of interference cross-terms, between opposite parity final-state continua, that change sign when {theta}{sub ej} {yields} {theta}{sub ej} + 180{sup o} in the angular distributions. The magnitude of these cross-terms varies rapidly with ejected-electron energy across overlapping autoionizing resonances. The energy variation in the interference terms may be examined by obtaining the sum (I{sup +} + I{sup -}) and difference (I{sup +} - I{sup -}) of (e,2e) energy spectra measured at ejected-electron angles 180{sup o} apart.
- Research Organization:
- University of Kentucky Research Foundation, Lexington, KY (US)
- Sponsoring Organization:
- USDOE Office of Science (US)
- DOE Contract Number:
- FG02-91ER14214
- OSTI ID:
- 808503
- Country of Publication:
- United States
- Language:
- English
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