Resonant Ionization Spectroscopy of Ba{sup {minus}}: Metastable and Stable Ions

Journal Article · Mon Sep 04 04:00:00 EDT 1995 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.75.1911· OSTI ID:249557

Petrunin, V V; Voldstad, J D; Balling, P; Kristensen, P; Andersen, T ^[1]; Haugen, H K ^[2]

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1. Institute of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C (Denmark)
2. Departments of Physics and Astronomy and Engineering Physics, McMaster University, Hamilton, Ontario, L8S 4M1 (Canada)

A new technique based on the combination of laser photodetachment and resonance ionization spectroscopy has been used to characterize the state composition of a fast, negative-ion beam of barium and to determine the binding energies of its long-lived components, the metastable 5{ital d}6{ital s}6{ital p}{sup 4}{ital F}{sub 9/2} state and the 6{ital s}{sup 2}6{ital p}{sup 2}{ital P}{sub 3/2,1/2} ground state, with an accuracy previously inaccessible for the weakly bound, negative alkaline-earth ions. Additional information about the Ba{sup {minus}} states was obtained from lifetime studies in the ASTRID storage ring.

• OSTI ID: 249557
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 10 Vol. 75; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BARIUM IONS
BINDING ENERGY
GROUND STATES
IONIZATION
LIFETIME
METASTABLE STATES
RESONANCE
SPECTROSCOPY