Journal article

Spectroscopy of nonspherical atomic bubbles in solid Helium

  • Lebedev, Victor Département de Physique, Université de Fribourg, Switzerland
  • Moroshkin, Peter Département de Physique, Université de Fribourg, Switzerland
  • Weis, Antoine Département de Physique, Université de Fribourg, Switzerland
    04.04.2011
Published in:
  • The Journal of Physical Chemistry A. - 2011, vol. 115, no. 25, p. 7169–7179
English We analyze the effect of the host crystal symmetry on the optical spectra of the 6P1/2−6S1/2 and 6P3/2−6S1/2 transitions of atomic Cs in solid ⁴He matrices. In particular, we address the deformation of the bubble structures formed by Cs in such quantum crystals. We show that the anisotropy of the stiffness tensor leads to static quadrupolar bubble shape deformations in hexagonally close-packed (hcp) crystals, while the corresponding deformations in the body-centered cubic (bcc) phase of the matrix have a hexadecupolar symmetry. A comparison of the measured excitation spectra with our model calculations allow us to infer quantitative values of the deformation parameters.
Faculty
Faculté des sciences
Department
Physique
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/302166
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