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Precision Spectroscopy in He as a test of QED

Bergeson, S; Balakrishnan, Asha; Baldwin, Kenneth; Lucatorto, T; Marangos, J; McIlrath, T; O'Brian, T; Rolston, S; Sansonetti, C; Werner, Helmut; Westbrook, N; Cheng, C; Eyler, Edward

Description

High-resolution laser-based measurements of energy levels have spurred the development and refinement of quantum electrodynamic calculations. We have extended very-high-resolution laser spectroscopy techniques into the vacuum ultraviolet wavelength region at λ ≈ 120 nm to determine the Lamb shift in the ground state of He I. The importance of this measurement to high accuracy quantum electrodynamics calculations is discussed. Details of the present measurement and future improvements are...[Show more]

CollectionsANU Research Publications
Date published: 1999
Type: Journal article
URI: http://hdl.handle.net/1885/94955
Source: Physica Scripta

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