Computing resonance positions, widths, and cross sections via the Feshbach-Fano R-matrix method: Application to potential scattering

Journal Article · Fri Jul 15 00:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.72.012708· OSTI ID:20718366

Kolorenc, Premysl; Horacek, Jiri ^[1]; Brems, Vincent ^[2]

---

1. Institute of Theoretical Physics, Faculty of Mathematics and Physics, Charles University in Prague (Czech Republic)
2. Department of Chemical Physics, J. Heyrovsky Institute of Physical Chemistry, Dolejskova 3, 18223 Praha 8 (Czech Republic)

The general Feshbach-Fano R-matrix procedure proposed recently by Nestmann [J. Phys. B 31, 3929 (1998)] makes it possible to construct resonance metastable states of transient molecular ions and their coupling elements to the background scattering continuum. These quantities are needed for the study of nuclear dynamics in the framework of the nonlocal resonance model. The performance of this approach is carefully studied and its properties analyzed in the field of potential scattering. An improvement of the Nestmann procedure which makes the calculation more stable and robust is proposed.

• OSTI ID: 20718366
• Journal Information: Physical Review. A, Vol. 72, Issue 1; Other Information: DOI: 10.1103/PhysRevA.72.012708; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ALGEBRA
COUPLING
CROSS SECTIONS
METASTABLE STATES
MOLECULAR IONS
POTENTIAL SCATTERING
R MATRIX
RESONANCE