Specific heat related to the Raman frequency shifts for the rotatory mode in ammonia solid I close to the melting point


Karacali H., Yurtseven H.

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER, cilt.98, ss.57-67, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 98 Konu: 1
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1016/j.jqsrt.2005.05.072
  • Dergi Adı: JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
  • Sayfa Sayıları: ss.57-67

Özet

This study gives an evidence for the validity of our spectroscopic modification of the Pippard relation as apphed to ammonia solid I close to the melting point. We use our calculated frequencies for the rotatory lattice (librational) mode in ammonia solid I for the pressures of 0, 1.93 and 3.07 kbars. We obtain that the specific heat C-p varies linearly with the frequency shifts 1/v(delta v/delta T)(p) for this Raman mode at those pressures studied in this crystalline system. Our values of the slope dP(m)/dT that we deduced from the linear plots, are not in satisfactory agreement with the experimental values in ammonia solid I near the melting point. (c) 2005 Elsevier Ltd. All rights reserved.