Dielectronic recombination from the ground state of heliumlike carbon ions

Journal Article · Tue Jun 01 04:00:00 EDT 1993 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.47.4859· OSTI ID:6496779

Kilgus, G; Habs, D; Schwalm, D; Wolf, A ^[1]; Schuch, R ^[2]; Badnell, N R ^[3]

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1. Physikalisches Institut der Universitaet Heidelberg, W-6900 Heidelberg (Germany) Max-Planck-Institut fuer Kernphysik, W-6900 Heidelberg (Germany)
2. Manne Siegbahn Institute of Physics, S-10405 Stockholm (Sweden)
3. Department of Physics, Auburn University, Auburn, Alabama 36849-5311 (United States)

The cross section for dielectronic recombination of C[sup 4+] ions in the 1[ital s][sup 2] ground state has been measured with an energy resolution of [approx]2 eV at the heavy-ion storage ring TSR (at Heidelberg) up to the 1[ital s]2[ital s]([sup 1,3][ital S]) and 1[ital s]2[ital p]([sup 1,3][ital P]) excitation thresholds just below 310 eV. Resonance energies and absolute cross sections are found to be well reproduced by theoretical calculations except in a region extending [approx]5 eV below the almost degenerate excitation thresholds 1[ital s]2[ital s]([sup 1][ital S]) and 1[ital s]2[ital p]([sup 3][ital P]). These discrepancies imply that theory overestimates the cross section, energy-integrated over all dielectronic resonances, by [approx]10%.

• DOE Contract Number: FG05-86ER53217
• OSTI ID: 6496779
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 47:6; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
CAPTURE
CARBON IONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELECTRON CAPTURE
ELECTRON COLLISIONS
ELECTRON-ION COLLISIONS
ENERGY LEVELS
ENERGY RANGE
EV RANGE
EV RANGE 100-1000
GROUND STATES
ION COLLISIONS
IONS
MULTICHARGED IONS
RECOMBINATION