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Precision Measurement for Metastable Helium Atoms of the 413 nm Tune-Out Wavelength at Which the Atomic Polarizability Vanishes

Henson, B. M., Khakimov, R. I., Dall, R. G., Baldwin, K. G. H., Tang, Li-Yan and Truscott, A. G. (2015). Precision Measurement for Metastable Helium Atoms of the 413 nm Tune-Out Wavelength at Which the Atomic Polarizability Vanishes. Physical Review Letters,115(4):043004-1-043004-5.

Document type: Journal Article
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IRMA ID 83393865xPUB258
Title Precision Measurement for Metastable Helium Atoms of the 413 nm Tune-Out Wavelength at Which the Atomic Polarizability Vanishes
Author Henson, B. M.
Khakimov, R. I.
Dall, R. G.
Baldwin, K. G. H.
Tang, Li-Yan
Truscott, A. G.
Journal Name Physical Review Letters
Publication Date 2015
Volume Number 115
Issue Number 4
ISSN 0031-9007   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-84938781136
Start Page 043004-1
End Page 043004-5
Total Pages 5
Place of Publication United States
Publisher American Physical Society
Field of Research ENGINEERING
HERDC Category C1 - Journal Article (DIISR)
Abstract We present the first measurement for helium atoms of the tune-out wavelength at which the atomic polarizability vanishes. We utilize a novel, highly sensitive technique for precisely measuring the effect of variations in the trapping potential of confined metastable (23S1) helium atoms illuminated by a perturbing laser light field. The measured tune-out wavelength of 413.0938(9stat)(20syst)  nm compares well with the value predicted by a theoretical calculation [413.02(9) nm] which is sensitive to finite nuclear mass, relativistic, and quantum electrodynamic effects. This provides motivation for more detailed theoretical investigations to test quantum electrodynamics.
DOI http://dx.doi.org/10.1103/PhysRevLett.115.043004   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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