Measurement of a false electric dipole moment signal from 199Hg atoms exposed to an inhomogeneous magnetic field

We report on the measurement of a Larmor frequency shift proportional to the electric-field strength for 199 Hg atoms contained in a volume permeated with aligned magnetic and electric fields. This shift arises from the interplay between the inevitable magnetic field gradients and the motional magne...

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Bibliographic Details
Published in:The European physical journal. D, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2015-10, Vol.69 (10), Article 225
Main Authors: Afach, S., Baker, C. A., Ban, G., Bison, G., Bodek, K., Chowdhuri, Z., Daum, M., Fertl, M., Franke, B., Geltenbort, P., Green, K., van der Grinten, M. G. D., Grujic, Z., Harris, P. G., Heil, W., Hélaine, V., Henneck, R., Horras, M., Iaydjiev, P., Ivanov, S. N., Kasprzak, M., Kermaïdic, Y., Kirch, K., Knowles, P., Koch, H.-C., Komposch, S., Kozela, A., Krempel, J., Lauss, B., Lefort, T., Lemière, Y., Mtchedlishvili, A., Naviliat-Cuncic, O., Pendlebury, J. M., Piegsa, F. M., Pignol, G., Prashant, P. N., Quéméner, G., Rebreyend, D., Ries, D., Roccia, S., Schmidt-Wellenburg, P., Severijns, N., Weis, A., Wursten, E., Wyszynski, G., Zejma, J., Zenner, J., Zsigmond, G.
Format: Article
Language:English
Subjects:
Applications of Nonlinear Dynamics and Chaos Theory
Atomic
Molecular
Optical and Plasma Physics
Physical Chemistry
Physics
Physics and Astronomy
Quantum Information Technology
Quantum Physics
Regular Article
Spectroscopy/Spectrometry
Spintronics
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Summary:We report on the measurement of a Larmor frequency shift proportional to the electric-field strength for 199 Hg atoms contained in a volume permeated with aligned magnetic and electric fields. This shift arises from the interplay between the inevitable magnetic field gradients and the motional magnetic field. The proportionality to electric-field strength makes it apparently similar to an electric dipole moment (EDM) signal, although unlike an EDM this effect is P- and T-conserving. We have used a neutron magnetic resonance EDM spectrometer, featuring a mercury co-magnetometer and an array of external cesium magnetometers, to measure the shift as a function of the applied magnetic field gradient. Our results are in good agreement with theoretical expectations. Graphical abstract
ISSN:1434-6060
1434-6079
DOI:10.1140/epjd/e2015-60207-4