Scattering of slow electrons by polar molecules: Application of effective-range potential theory to HC1
We present a non-empirical potential model for studying threshold vibrational excitation of polar molecules by electron impact. This work builds on the zero-range potential virtual state model of Gauyacq and Herzenberg (J.P. Gauyacq and A. Herzenberg, Phys. Rev. A 25, 2959 (1982)), using known analytic properties of the S-matrix for a dipole potential to predict the analytic continuation of the negative ion potential curve into the continuum. We derive an equation that determines the nuclear dynamics which can be solved without the need for an expansion in target vibrational states. The model is applied to e{sup -} - HCl and is found to capture the essential features of the observed excitation cross sections, including both the threshold peaks as well as oscillatory structures at energies above threshold.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director. Office of Science. Office of Basic Energy Sciences. Division of Chemical Sciences (US)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 825131
- Report Number(s):
- LBNL-53574; PLRAAN; R&D Project: 409601; TRN: US0402329
- Journal Information:
- Physical Review A, Vol. 68, Issue 5; Other Information: Journal Publication Date: November, 2003; PBD: 19 Jun 2003; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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