Nonpolar optical scattering of positronium in magnesium fluoride
Materials Science
2009-11-10 v1
Abstract
We report the results of the analysis of the temperature broadening of the momentum distribution of delocalized Positronium (Ps) in Magnesium Fluoride in terms of optical deformation-potential scattering model (long-wavelength optical phonons). The Ps optical deformation-potential coupling constant in MgF has been determined to be eV/cm. We also show that the Ps momentum distribution is sensitive to second-order phase transitions in those crystals where optical deformation-potential scattering is allowed in one and forbidden in another crystalline phase.
Keywords
Cite
@article{arxiv.cond-mat/0411577,
title = {Nonpolar optical scattering of positronium in magnesium fluoride},
author = {I. V. Bondarev and Y. Nagai and M. Kakimoto and T. Hyodo},
journal= {arXiv preprint arXiv:cond-mat/0411577},
year = {2009}
}