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Phys. Rev. Lett. 101, 113201 (2008) [4 pages]

Dressed Atoms in Flight through a Periodic Crystal Field: X-VUV Double Resonance

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Y. Nakai1, Y. Nakano2, T. Azuma2,*, A. Hatakeyama3, C. Kondo4, K. Komaki4, Y. Yamazaki4,5, E. Takada6, and T. Murakami6
1Radioactive Isotope Physics Laboratory, RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
2Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
3Department of Applied Physics, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
4Graduate School of Arts and Sciences, University of Tokyo, Komaba, Meguro, Tokyo 153-8902, Japan
5Atomic Physics Laboratory, RIKEN, Wako, Saitama 351-0198, Japan
6National Institute of Radiological Sciences, Inage, Chiba 263-8555, Japan

Received 4 May 2008; published 8 September 2008

See accompanying Physics Synopsis

We report the Autler-Townes doublet demonstrating a novel type of coherent interaction of atoms not with photons but with a periodic crystal field when the atom is in flight through a crystal at high velocity. It was observed by the nonoptical X-VUV (vacuum-ultraviolet) double resonance of three-dimensional resonant coherent excitation with good coherence. The states strongly coupled in the VUV region were probed by the excitation in the x-ray region. The characteristic spectra are well interpreted by an analogy of the dressed atom concept often adopted for the atom-photon interaction.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.113201
DOI:
10.1103/PhysRevLett.101.113201
PACS:
34.50.Fa, 32.80.Qk, 42.50.Ct, 61.85.+p

*azuma@phys.metro-u.ac.jp

 
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