Analysis of the digitally enhanced high resolution infrared spectra of CD/sub 3/Br and CH/sub 3/CN

Thesis/Dissertation · Sat Jan 01 04:00:00 EST 1983

OSTI ID:5363012

Bardin, D E

A signal averaging procedure has been developed to make short segments of digital high resolution infrared grating spectra linear in frequency and to sum the segments in phase. Signal averaging can be used to increase the signal to noise ratio, to increase the resolution limit, or a combination of the two. Combining signal averaging with other signal processing techniques, the resolution limit of the nu/sub 4/ band of the CD/sub 3/Br was increased enough to warrant a reanalysis that included an x-y Coriolis interaction. The final resolution limit for the nu/sub 4/ band was approximately 0.025 cm/sup -1/. Signal averaging also increased the signal strength of the weakly absorbing 2nu/sub 5/(perpendicular) band of CH/sub 3/CN enough to analyze it simultaneously with the nu/sub 5/ band. Analysis of eighty (80) lines from the 2nu/sub 5/(perpendicular) band and one hundred sixty (160) lines from the nu/sub 5/ band improved the values of several molecular constants.

• Research Organization: Michigan State Univ., East Lansing (USA)
• OSTI ID: 5363012
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
BORIDES
BORON COMPOUNDS
CARBON COMPOUNDS
DATA
DEUTERIUM COMPOUNDS
ENERGY LEVELS
EXPERIMENTAL DATA
HYDROGEN COMPOUNDS
INFORMATION
INFRARED SPECTRA
NITRIDES
NITROGEN COMPOUNDS
NUMERICAL DATA
PNICTIDES
RESOLUTION
SIGNAL-TO-NOISE RATIO
SPECTRA