Approximation to true peak absorbance from observed peak absorbance for gas phase Fourier transform spectroscopy

K. L. McNesby; C. F. Chabalowski; R. A. Fifer

doi:10.1364/AO.30.000378

Applied Optics
Vol. 30,
Issue 4,
pp. 378-379
(1991)
•https://doi.org/10.1364/AO.30.000378

Approximation to true peak absorbance from observed peak absorbance for gas phase Fourier transform spectroscopy

K. L. McNesby, C. F. Chabalowski, and R. A. Fifer

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K. L. McNesby, C. F. Chabalowski, and R. A. Fifer, "Approximation to true peak absorbance from observed peak absorbance for gas phase Fourier transform spectroscopy," Appl. Opt. 30, 378-379 (1991)

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Abstract

We have deυeloped an approximation that proυides a fast reasonably accurate estimate of the halfwidth at half-height of a single pressure-broadened line.

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True absorbance range	Optical retardation (cm)	lnk	l	n	Root mean square deviation from actual absorbance
0.1–1	1	0.211 (0.006)	1.287 (0.004)	1.208 (0.005)	0.011
0.1–1	2	0.298 (0.008)	1.227 (0.007)	1.111 (0.007)	0.02
0.1–1	4	0.455 (0.012)	1.116 (0.011)	0.941 (0.011)	0.011
0.1–1	8	0.588 (0.017)	1.077 (0.015)	0.698 (0.013)	0.049
0.1–1	10	0.611 (0.018)	1.056 (0.016)	0.616 (0.013)	0.052
1–3	1	0.172 (0.008)	1.703 (0.004)	1.634 (0.011)	0.027
1–3	2	0.331 (0.015)	1.661 (0.028)	1.539 (0.027)	0.068
1–3	4	0.625 (0.022)	1.571 (0.066)	1.301 (0.058)	0.161
1–3	8	0.906 (0.025)	1.428 (0.106)	0.927 (0.075)	0.256
1–3	10	0.956 (0.027)	1.426 (0.110)	0.835 (0.071)	0.265
1–5	1	0.122 (0.014)	1.818 (0.014)	1.748 (0.015)	0.054
1–5	2	0.326 (0.029)	1.813 (0.041)	1.665 (0.040)	0.149
1–5	4	0.748 (0.047)	1.734 (0.110)	1.375 (0.095)	0.38
1–5	8	1.113 (0.036)	1.655 (0.178)	0.982 (0.120)	0.563
3–7	1	0.045 (0.035)	1.938 (0.038)	1.862 (0.037)	0.089
3–7	2	0.343 (0.106)	1.908 (0.143)	1.724 (0.133)	0.322
3–7	4	1.076 (0.159)	1.419 (0.346)	1.060 (0.269)	0.756
3–10	1	0.036 (0.046)	1.980 (0.042)	1.892 (0.042)	0.162
3–10	2	0.418 (0.144)	1.966 (0.167)	1.731 (0.153)	0.591
3–10	4	1.255 (0.210)	1.536 (0.400)	1.073 (0.298)	1.288

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Applied Optics