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| Home > Workflow collections > Publication Charges > Direct observation of transitions between quantum states with energy differences below 10 neV employing a Sona unit |
| Journal Article | FZJ-2021-03731 |
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2021
Springer
Heidelberg
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Please use a persistent id in citations: http://hdl.handle.net/2128/28760 doi:10.1140/epjd/s10053-021-00268-4
Abstract: The direct access to atomic transitions between close by quantum states employing standard spectroscopic methods is often limited by the size of the necessary radio-frequency cavities. Here we report on a new tool for fundamental spectroscopy measurements that can overcome this shortcoming. For this, a Sona transition unit was used, i.e., two opposed solenoidal coils that provide an oscillating field in the rest frame of the through-going atomic beam. In this way, we were able to control the induced photon energy down to 10 neV or f∼ MHz. The tuneable parameter is the velocity of the atomic beam. For illustration of the method, we report a measurement of the hyperfine splitting energies between the substates with F=1 and m_F=−1,0,+1 of 2S_1/2 metastable hydrogen atoms as function of a magnetic field.
Keyword(s): Nuclei and Particles (1st) ; Nuclear Physics (2nd)
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