Photodetachment Spectroscopy of a Doubly Charged Anion: Direct Observation of the Repulsive Coulomb Barrier

Journal Article · Thu Oct 01 04:00:00 EDT 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.81.3351· OSTI ID:665567

Wang, X; Ding, C; Wang, L ^[1]

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1. Department of Physics, Washington State University, Richland, Washington 99352 (United States)

Photoelectron spectra of citric acid doubly charged anion were measured. The repulsive Coulomb barrier due to the two excess charges was directly probed and estimated to be about {approximately}1.9{endash} 2.5 eV . The adiabatic binding energy of the second electron was measured to be 1.0thinspthinspeV. Two detachment channels were observed, with the second channel at {approximately}0.6 eV higher in binding energy. The current study presents the first photodetachment experiments of a multiply charged anion and opens up new opportunities to study these novel molecular species. {copyright} {ital 1998} {ital The American Physical Society}

• Research Organization: Pacific Northwest National Laboratory
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 665567
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 16 Vol. 81; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANIONS
BINDING ENERGY
CARBON COMPOUNDS
CITRIC ACID
COULOMB ENERGY
ELECTRIC POTENTIAL
ELECTRON DETACHMENT
HYDROGEN COMPOUNDS
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
POTENTIAL ENERGY