ANALYSIS OF THE FREQUENCY SHIFT AND THE LINEWIDTH AS A FUNCTION OF TEMPERATURE IN SOLID NITROGEN

KURT M., YURTSEVEN H. H.

INTERNATIONAL JOURNAL OF MODERN PHYSICS B, vol.25, no.27, pp.3679-3689, 2011 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 25 Issue: 27
  • Publication Date: 2011
  • Doi Number: 10.1142/s0217979211101879
  • Journal Name: INTERNATIONAL JOURNAL OF MODERN PHYSICS B
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3679-3689
  • Keywords: Frequency shift, Raman linewidth, solid nitrogen, X-RAY-DIFFRACTION, HIGH-PRESSURE, VIBRATIONAL DYNAMICS, 1 MBAR, RAMAN, PHASE, GPA, ALPHA-N2, N-2, SPECTROSCOPY
  • Middle East Technical University Affiliated: Yes

Abstract

The temperature dependence of the frequency shift and the linewidth is studied using the expressions derived from the anharmonic self-energy. The functional form of the frequency shift is fitted in this study to the experimental data for the R(1) fluorescence line of ruby sample as a function temperature at zero pressure, instead of using empirical nu-P and nu-T relations in the ruby fluorescence method as given in the literature, in particular, for the solid nitrogen. We also demonstrate in this study the temperature dependence of the E(g) librational frequency and its linewidth by fitting the functional forms of both frequency shift and the linewidth to the experimental data for the alpha phase of solid nitrogen.