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Studies in Infrared Spectroscopy


Kennicott, Phillip Ray (1962) Studies in Infrared Spectroscopy. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/40GV-PH75.


The modernization of a vacuum grating infrared spectrometer is described. Experiments using this spectrometer on N-methyl formamide in the vapor phase are described, and the results are interpreted in terms of the position, shape, and intensity change with temperature of the vibration bands of this substance. It is concluded that N-methyl formamide exists in two isomeric forms in the vapor phase. The less abundant form is the cis isomer which lies 1.4 kcal. above the trans isomer.

An echelle-type grating used with this spectrometer is shown to have an unusually wide and flat efficiency curve. This is ascribed to a scattering phenomenon in which both faces of a groove participate. Mathematical analyses based on both the Kirchhoff theory and on the Rayleigh theory are shown to predict the broad region of high efficiency for this grating.

An amplifier which is intended to be used with a novel double-beam ratio detection system is described.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:(Chemistry and Physics)
Degree Grantor:California Institute of Technology
Division:Chemistry and Chemical Engineering
Major Option:Chemistry
Minor Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Badger, Richard McLean
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1962
Funding AgencyGrant Number
Alfred P. Sloan FoundationUNSPECIFIED
E.I. duPont de Nemours Company FundUNSPECIFIED
Record Number:CaltechTHESIS:08122011-112725761
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6581
Deposited By: Tony Diaz
Deposited On:19 Aug 2011 23:04
Last Modified:21 Dec 2023 19:15

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