Date of Award
1986
Document Type
Thesis
Publication Status
Version of Record
Submission Date
October 2026
Abstract
The Raman spectra of ammonia solid I and II were studied in the lattice and intramolecular region. The study of the internal modes of phase I suggests the presence of disorder in the ordered phase. The lattice modes of phase II are, for the first time, carefully reported as two very broad lines superimposed on an overdamped feature. The results confirm the structure previously determined by neutron scattering and NMR that phase II is a typical disordered phase with space group P6,3/mmc. A mode assignment was tentatively made and Gruneisen parameters of the two assumed translational modes calculated. In terms of the Michel-Naudts theory of rotational-translational interactions, phase II is in the slow relaxation regime. A four-band model was used for the intramolecular stretching region.
Extent
134 p.
Recommended Citation
LUO, RENKANG, "RAMAN SPECTRUM STUDY OF PHASE I AND II OF SOLID AMMONIA (GRANEISEN PARAMETERS)" (1986). Electronic Theses and Dissertations 1980 - 1989. 481.
https://digitalcommons.fau.edu/etd_general_3/481
Identifier
FADT14346
Comments
Thesis (M.S.)--Florida Atlantic University, 1986.|Thesis (M.S.)--Florida Atlantic University, 1986.