Stabilized double-electron capture in Kr[sup [ital q]+] ([ital q]=17,18)--Kr collisions

Journal Article · Sun Aug 01 00:00:00 EDT 1993 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.48.1171· OSTI ID:6277797

Martin, S; Denis, A; Delon, A; Desesquelles, J ^[1]; Ouerdane, Y ^[2]

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1. Laboratoire de Spectrometrie Ionique et Moleculaire, Universite Claude Bernard Lyon 1, Campus de la Doua, F-69622 Villeurbanne CEDEX (France)
2. Laboratoire de Traitement du Signal et Instrumentation, Universite de Saint-Etienne, 23 rue du Dr. Paul Michelon, F-42023 Saint-Etienne (France)

We have determined the distribution of [ital n] states initially populated in a double- or multielectron-capture collision of Kr[sup [ital q]+] ([ital q]=17,18) with Kr at low energy ([approx]5 keV/u). Radiative decay curves of Rydberg transitions of the projectile ions were obtained by translating the target gas jet along the projectile beam. As a result for Kr[sup 18+] projectiles, we found that an initial population of Kr[sup 16+] equally distributed from [ital n]=14 to 19 allows the observed Kr XVII 13-14 radiative decay curve to be reproduced relatively well. Furthermore, coincidence time-of-flight spectroscopy of photons emitted by recoil ions of given charge states was used to measure the radiative decay of recoil-ion transitions. From the Kr VII 7[ital i]-8[ital k] decay curve we deduced an initial population distribution of the Kr[sup 6+] recoil ion centered around [ital n]=20. These results lead to a better understanding of the mechanisms of double-electron capture responsible for populating Rydberg states, especially those in asymmetric configurations.

• OSTI ID: 6277797
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 48:2; 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
ATOM COLLISIONS
CAPTURE
CHARGE STATES
CHARGED PARTICLES
COLLISIONS
DECAY
ELECTRON CAPTURE
ELEMENTS
ENERGY RANGE
FLUIDS
GASES
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
KEV RANGE
KEV RANGE 100-1000
KRYPTON
MANY-BODY PROBLEM
MULTICHARGED IONS
NONMETALS
PARTICLE DECAY
RADIATIVE DECAY
RARE GASES
RECOILS
TWO-BODY PROBLEM