Theory of Brillouin-scattering intensity in rare-gas crystals

1977 ◽  
Vol 16 (4) ◽  
pp. 1706-1710 ◽  
Author(s):  
David W. Oxtoby ◽  
V. Chandrasekharan
Keyword(s):  
Brillouin Scattering ◽  
Rare Gas ◽  
Scattering Intensity

Evaluation of brillouin scattering intensities from rare gas crystals

1987 ◽  
Vol 61 (6) ◽  
pp. 1391-1414 ◽  
Author(s):  
V. Mazzacurati ◽  
G. Ruocco
Keyword(s):  
Brillouin Scattering ◽  
Rare Gas

Brillouin scattering studies of rare gas solids

1992 ◽  
Vol 9 (1-6) ◽  
pp. 205-217 ◽  
Author(s):  
Alain Polian
Keyword(s):  
Brillouin Scattering ◽  
Rare Gas

scholarly journals Boris Peter Stoicheff. 1 June 1924—15 April 2010

2018 ◽  
Vol 66 ◽  
pp. 403-422
Author(s):  
Henry M. van Driel
Keyword(s):  
Vacuum Ultraviolet ◽  
Extreme Ultraviolet ◽  
Brillouin Scattering ◽  
National Research Council ◽  
Rare Gas ◽  
Administrative Roles ◽  
University Of Toronto ◽  
Canadian Association ◽  
Personal Skills ◽  
High Standards

Boris Stoicheff was a pioneer in the use of high-resolution Raman spectroscopy at the National Research Council of Canada to elucidate the structural properties of molecules. He was also one of the first scientists to apply lasers to spectroscopy, investigating spontaneous and stimulated Raman and Brillouin scattering in liquids and solids at the University of Toronto. He later extended the range of tunable coherent sources into the vacuum ultraviolet (VUV) and extreme ultraviolet (XUV) regions down to 80 nm, allowing investigations of electronic states and their lifetimes for rare gas dimers. He authored 190 research and review articles as well as a biography of his postdoctoral mentor and later his senior colleague, Gerhard Herzberg. He used his keen insight, warm personality and strong personal skills to serve the scientific community in numerous administrative roles, including terms as president of the Canadian Association of Physicists and the Optical Society of America. His 24 PhD graduates and more than 20 postdoctoral fellows and visitors, all of whom benefitted from his strong mentoring skills and high standards, have gone on to prominent positions in academia, government and industry.

Macroscopic theory of dielectric solids. II. The theory of Brillouin scattering from rare gas crystals

1978 ◽  
Vol 56 (2) ◽  
pp. 199-215 ◽  
Author(s):  
J. E. Sipe
Keyword(s):  
Local Field ◽  
Scattering Theory ◽  
Short Range ◽  
Brillouin Scattering ◽  
Microscopic Model ◽  
Rare Gas ◽  
Dielectric Tensor ◽  
Macroscopic Theory ◽  
Effective Electric Field ◽  
Dielectric Solids

We extend the macroscopic theory of dielectric solids to include the description of the Brillouin scattering of light by deriving expressions for the dielectric constant in the absence of strains, and for the Pockels elasto-optic coefficients, from a microscopic model appropriate for the rare gas crystals. The constituent atoms are regarded as polarizable particles coupled by the dipole–dipole interaction, which we treat by introducing the usual microscopic effective electric field, and by the short-range higher multipole and Vander Waals interactions, which are included in the microscopic model by associating with each atom an effective polarizability that depends on the distance between the atom and its nearest neighbors. We define the macroscopic fields by space averaging over volume elements of linear dimensions Δ satisfying a [Formula: see text], where a is the interatomic spacing and λ the wavelength in vacuo; using a new theorem relating the microscopic effective electric field and macroscopic electric and polarization fields, we are able to derive a constitutive relation, involving the strain tensor, from our microscopic model. While the largest contribution to the Pockels coefficients appearing in this relation is due to variations in the dielectric tensor that result from deviations of the macroscopic density from its value in the absence of strains, we find that two other contributions appear because strain fields affect the dielectric tensor by changing both the local field and the values of the effective polarizabilities. If the short-range interactions are neglected, our theory leads to the same ratios of Pockels coefficients obtained from the microscopic scattering theory of Werthamer (when an error in that theory is corrected), but the values of the Pockels coefficients we obtain contain a local field correction, which the microscopic scattering theory does not take into account. The contribution of the short-range interactions to the Pockels coefficients is estimated by obtaining values of the effective polarizabilities from calculations of the polarizabilities of pairs of rare-gas atoms; we find that the contribution is non-negligible and thus demonstrate that new information on these short-range interactions can be obtained from the results of Brillouin scattering experiments.

Evaluation of Brillouin scattering intensities from rare gas crystals

1990 ◽  
Vol 71 (1) ◽  
pp. 97-108 ◽  
Author(s):  
P. Gallo ◽  
V. Mazzacurati ◽  
G. Ruocco
Keyword(s):  
Brillouin Scattering ◽  
Rare Gas

Brillouin scattering from cross-linked gels

1992 ◽  
Vol 2 (12) ◽  
pp. 2081-2088 ◽  
Author(s):  
Francesco Mallamace ◽  
Norberto Micali ◽  
Cirino Vasi ◽  
Rama Bansil ◽  
Sinisa Pajevic ◽  
...  
Keyword(s):  
Brillouin Scattering
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