The Hyperfine Structure of Cs Atoms in the b.c.c. Phase of Solid 4He
Author(s): S. Lang, S. I. Kanorsky, M. Arndt, S. B. Ross, T. W. Hänsch, A. Weis
Journal: Europhys. Lett.
DOI Number: 10.1209/0295-5075/30/4/008
Link: Link to publication
We have detected the ground state F = 4 → F = 3 hyperfine transition of cesium atoms implanted in a b.c.c. matrix of solid 4He using a microwave-optical double-resonance technique. The transition frequency is blue-shifted by ~ 197 MHz (2.1%) with respect to the free atomic transition and grows with increasing pressure at a rate of ~ 1.4 MHz/bar.