Dressed atoms in flight through a periodic crystal field: X-VUV double resonance.
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.
Nakai
Y
Y
Radioactive Isotope Physics Laboratory, RIKEN Nishina Center, Wako, Saitama 351-0198, Japan.
Nakano
Y
Y
Azuma
T
T
Hatakeyama
A
A
Kondo
C
C
Komaki
K
K
Yamazaki
Y
Y
Takada
E
E
Murakami
T
T