Photorecombination of C4+ ions in low-lying resonance energy regions - art. no. 022706

Citation
Lb. Zhao et al., Photorecombination of C4+ ions in low-lying resonance energy regions - art. no. 022706, PHYS REV A, 6202(2), 2000, pp. 2706
Citations number
47
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW A
ISSN journal
1050-2947 → ACNP
Volume
6202
Issue
2
Year of publication
2000
Database
ISI
SICI code
1050-2947(200008)6202:2<2706:POCIIL>2.0.ZU;2-N
Abstract
Within the framework of the rigorous continuum-bound transition theory of D avies and Seaton [J. Phys. B 2, 757 (1969)], we have developed a numerical method to calculate low-lying resonance photorecombination by directly eval uating the Cauchy principal value of the integral in scattering matrices. T he required dipole matrix was obtained using the close-coupling R-matrix co de. The advantage of this method is that radiation damping can be accuratel y estimated and it can naturally be applied to stronger resonance-resonance interference systems. On the basis of this scheme, photorecombination cros s sections of C4+ ions in the KLL, KLM; and KLN resonance energy regions we re calculated, and compared with synchrotron storage ring experimental data and perturbative and close-coupling theoretical results. The comparisons s howed that our damped cross sections reproduce the results of the high-reso lution experimental measurements. and are in agreement with the theoretical calculations. However, our undamped cross sections are larger than the clo se-coupling results in the parametrized method by a factor of up to 3. The discrepancies were interpreted.