Leung, Allen W.K. and Kaup, John G. and Bellert, D. and McCaffrey, John G. and Breckenridge, W.H.
(1999)
Spectroscopic characterization of the weakly bound Ca(4s4dσ 3D3)⋅Ar[3Σ+]
state: Evidence for a substantial maximum in the potential curve at long range.
Journal of Chemical Physics, 111 (6).
pp. 2484-2489.
ISSN 0021-9606
Abstract
The weakly bound Ca(4s4dσ 3D3)⋅Ar[3Σ+] state has been characterized by means of R2PI (Resonant Two-Photon Ionization) spectroscopy, using transitions from the Ca(4s4pπ 3P0)⋅Ar[3Π0⎯] metastable state prepared in a laser-vaporization/supersonic jet source. Because several of the vibrational levels are above the dissociation limit [to Ca(4s4d 3D3)+Ar(1S0)], it is concluded that there must be a substantial maximum in the Ca(4s4dσ 3D3)⋅Ar[3Σ+] potential curve (>200 cm−1) at large R (>4.0 Å). This is discussed, and shown to be consistent with our earlier ideas of “penetration” of outerlobes of electron density of metal atom excited states by RG (rare-gas) atoms. Perturbations observed, due to possible potential curve crossings with states of different electronic symmetry, are also discussed.
| Item Type: |
Article
|
| Keywords: |
Der-Waals Molecules; Vanderwaals Complex; Rydberg States;
Interatomic Potentials; Excitation Spectrum; Electronic states; Valence States; Transitions; Atoms; Inar; |
| Academic Unit: |
Faculty of Science and Engineering > Chemistry |
| Item ID: |
12550 |
| Identification Number: |
https://doi.org/10.1063/1.479526 |
| Depositing User: |
Dr. John McCaffrey
|
| Date Deposited: |
09 Mar 2020 16:58 |
| Journal or Publication Title: |
Journal of Chemical Physics |
| Publisher: |
American Institute of Physics |
| Refereed: |
Yes |
| URI: |
|
| Use Licence: |
This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available
here |
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