Note
Thesis (M.S.)--Florida Atlantic University, 1985.
Member of
Contributors
Publisher
Florida Atlantic University
Date Issued
1985
Description
The frequencies of three lattice vibrational nodes of solid
ammonia I were measured as functions of temperature and molar
volume, via Raman spectroscopy. Calculated Gruneisen parameters
of 2.6, 2.4, and 0.8, for modes with frequencies near
108 cm^-1 , 140 cm^-1 and 306 cm^-1 , respectively, identify the
first two modes to be translational and the third librational
in accordance with previous assignments. The Gruneisen parameter
of the libration is lower than expected for purely octopolar
electrostatic interactions between molecules. The
change in frequency with temperature of all three modes is
due to their interaction with the mode near 108 cm^-1. The lifetimes
of both translations are determined by their rate of
combination with librations near 306 cm^-1
and 313 cm^-1. The lifetime of the libration near 306 cm^-1 depends on its rate of
combination with the two translations (108 cm^-1 and 140 cm^-1) and a libration near 440 cm^-1.
ammonia I were measured as functions of temperature and molar
volume, via Raman spectroscopy. Calculated Gruneisen parameters
of 2.6, 2.4, and 0.8, for modes with frequencies near
108 cm^-1 , 140 cm^-1 and 306 cm^-1 , respectively, identify the
first two modes to be translational and the third librational
in accordance with previous assignments. The Gruneisen parameter
of the libration is lower than expected for purely octopolar
electrostatic interactions between molecules. The
change in frequency with temperature of all three modes is
due to their interaction with the mode near 108 cm^-1. The lifetimes
of both translations are determined by their rate of
combination with librations near 306 cm^-1
and 313 cm^-1. The lifetime of the libration near 306 cm^-1 depends on its rate of
combination with the two translations (108 cm^-1 and 140 cm^-1) and a libration near 440 cm^-1.
Language
Type
Form
Extent
88 p.
Subject (Topical)
Identifier
14251
Additional Information
Thesis (M.S.)--Florida Atlantic University, 1985.
Charles E. Schmidt College of Science
Date Backup
1985
Date Text
1985
Date Issued (EDTF)
1985
Extension
FAU
FAU
admin_unit="FAU01", ingest_id="ing1508", creator="staff:fcllz", creation_date="2007-07-19 02:20:06", modified_by="staff:fcllz", modification_date="2011-01-06 13:09:07"
IID
FADT14251
Organizations
Attributed name: Florida Atlantic University
Person Preferred Name
NYE, CHARLES LEE.
Graduate College
Physical Description
88 p.
application/pdf
Title Plain
TEMPERATURE AND VOLUME DEPENDENCE OF LATTICE VIBRATIONAL FREQUENCIES FOR SOLID AMMONIA I
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Origin Information
1985
Boca Raton, Fla.
Florida Atlantic University
Physical Location
Florida Atlantic University Libraries
Place
Boca Raton, Fla.
Sub Location
Digital Library
Title
TEMPERATURE AND VOLUME DEPENDENCE OF LATTICE VIBRATIONAL FREQUENCIES FOR SOLID AMMONIA I
Other Title Info
TEMPERATURE AND VOLUME DEPENDENCE OF LATTICE VIBRATIONAL FREQUENCIES FOR SOLID AMMONIA I