High Resolution Fourier Transform Spectroscopy of the First Overtone of the N-O Stretch in Nitrosyl Bromide

Author

Todd E. Wiest

Date of Award

9-1994

Document Type

Thesis

Degree Name

Master of Science

Department

Department of Engineering Physics

First Advisor

Glen P. Perram, PhD

Abstract

Infrared Fourier transform spectroscopy of the first overtone of the nitric oxide (NO) bond stretch in nitrosyl bromide (ONBr) has been performed at a resolution of 0.02cm^-1 to obtain the rotational parameters of the V₁ = 2 energy level. Roughly 1000 transitions have been observed for rotational levels up to J = 80 and K_a = 7. The calculation of the complete set of rotational energy levels of this asymmetric molecule requires the numerical diagonalization of four, tridiagonal matricies for each J. From a non-linear least squares fit of observed transitions with J ≤ 40 using an approximation for the energy levels, the maximum J value accurately approximated was determined to be twenty-four. The fit was re-accomplished for J ≤ 24. The Monte Carlo analysis suggests the need to use higher J levels to determine the distortion constants.

AFIT Designator

AFIT-GAP-ENP-94D-11

DTIC Accession Number

ADA289318

Comments

The author's Vita page is omitted.

Recommended Citation

Wiest, Todd E., "High Resolution Fourier Transform Spectroscopy of the First Overtone of the N-O Stretch in Nitrosyl Bromide" (1994). Theses and Dissertations. 6647.
https://scholar.afit.edu/etd/6647