Abstract
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 $\ensuremath{\sim}1.9--2.5\mathrm{eV}$. The adiabatic binding energy of the second electron was measured to be 1.0 eV. Two detachment channels were observed, with the second channel at $\ensuremath{\sim}0.6\mathrm{eV}$ 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.
Keywords
IonAtomic physicsBinding energyPhysicsCoulombAdiabatic processCoulomb barrierElectronX-ray photoelectron spectroscopySpectroscopySpectral lineElectron affinity (data page)Highly charged ionMoleculeNuclear magnetic resonanceQuantum mechanicsIon source
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Publication Info
- Year
- 1998
- Type
- article
- Volume
- 81
- Issue
- 16
- Pages
- 3351-3354
- Citations
- 138
- Access
- Closed
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Cite This
Xue‐Bin Wang,
Chuan‐Fan Ding,
Lai‐Sheng Wang
(1998).
Photodetachment Spectroscopy of a Doubly Charged Anion: Direct Observation of the Repulsive Coulomb Barrier.
Physical Review Letters
, 81
(16)
, 3351-3354.
https://doi.org/10.1103/physrevlett.81.3351
Identifiers
- DOI
- 10.1103/physrevlett.81.3351