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First observation of a photon-induced triply excited state in atomic lithium

Kiernan, Laurence, Kennedy, Eugene T. orcid logoORCID: 0000-0002-0710-5281, Mosnier, Jean-Paul orcid logoORCID: 0000-0002-9312-1754, Costello, John T. orcid logoORCID: 0000-0003-4677-9999 and Sonntag, B. (1994) First observation of a photon-induced triply excited state in atomic lithium. Physical Review Letters, 72 (15). pp. 2359-2362. ISSN 0031-9007

Abstract
Using a dual laser plasma technique we have measured for the first time the photoabsorption spectrum of atomic lithium at energies corresponding to the simultaneous excitation of both 1s electrons. We have observed the main triply excited 1s22s(2S)→2s2p(2P) transition with Fano parameters E0=142.32±0.05 eV Γ=0.20±0.04 eV, and q=-2.2±0.6. Our experiment represents the first step in photoionization studies of this fundamental atomic system in which the motion of the three electrons in the field of the nucleus is so highly correlated.
Metadata
Item Type:Article (Published)
Refereed:Yes
Subjects:Physical Sciences > Physics
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Science and Health > School of Physical Sciences
Publisher:The American Physical Society
Official URL:http://dx.doi.org/10.1103/PhysRevLett.72.2359
Copyright Information:© 1994 The American Physical Society
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
ID Code:15618
Deposited On:05 Aug 2010 15:57 by DORAS Administrator . Last Modified 07 Oct 2021 11:53
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