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Phonon wings in inelastic neutron scattering spectroscopy: The harmonic approximation.
- Source :
-
Journal of Chemical Physics . 11/1/1989, Vol. 91 Issue 9, p5164. 6p. - Publication Year :
- 1989
-
Abstract
- The inelastic neutron scattering (INS) spectra of some ammonium halides and ammonium nitrate are analyzed in terms of the internal vibrations of the NH+4 ion convoluted with multiphonon lattice modes up to the eighth term. Due to the low mass of this ion, most of the intensity of the internal-mode region of the INS spectra is in the ‘‘phonon wings,’’ differences between the salts in this spectral region being mainly due to differences in their lattice-mode spectra. Refinement of the lattice Debye–Waller factor is included in the profile refinement of interatomic force constants. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SCATTERING (Physics)
*SPECTRUM analysis
*AMMONIUM compounds
*VIBRATION (Mechanics)
Subjects
Details
- Language :
- English
- ISSN :
- 00219606
- Volume :
- 91
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Journal of Chemical Physics
- Publication Type :
- Academic Journal
- Accession number :
- 7619328
- Full Text :
- https://doi.org/10.1063/1.457615