Jeffrey L. Hall, Horst Adams, J. V. V. Kasper, R. F. Curl, and F. K. Tittel, "Color-center laser kinetic spectroscopy: observation of the a1 Δ NH vibrational fundamental," J. Opt. Soc. Am. B 2, 781-785 (1985)
The vibrational fundamental of a1Δ NH formed by 193-nm excimer-laser photolysis of gaseous HN3 has been observed using a color-center laser. The high degree of rotational excitation resulting from the photolysis, corresponding to a temperature of ∼10 000 K, allows high-order centrifugal distortion constants to be determined. The frequencies of the 35 observed lines and the centrifugal distortion constants determined from them are reported.
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(Observed – calculated) values using the constants given in Table 2.
(Observed – calculated) values using the constants of Ramsay and Sarre.24
Not included in least-squares fit. These lines were measured from survey scans and could be as much as 0.030 cm−1 in error (corresponding to two laser-cavity modes).
Table 2
Molecular Constants for the Vibrational Fundamental of a1 Δ NH
The constants of the present work were generated using a least-squares procedure incorporating our own IR data and the data of Ramsay and Sarre.24 The uncertainties in these measurements, used to weight the data, were taken as 0.003 and 0.005 cm−1, respectively.
The error limits are 1σ and are right justified to the last digit on the line. ν0 corresponds to ΔG1/2.
Standard deviation of the fit.
Tables (2)
Table 1
Observed Wave Numbers of the Vibrational Fundamental of a1Δ NH
(Observed – calculated) values using the constants given in Table 2.
(Observed – calculated) values using the constants of Ramsay and Sarre.24
Not included in least-squares fit. These lines were measured from survey scans and could be as much as 0.030 cm−1 in error (corresponding to two laser-cavity modes).
Table 2
Molecular Constants for the Vibrational Fundamental of a1 Δ NH
The constants of the present work were generated using a least-squares procedure incorporating our own IR data and the data of Ramsay and Sarre.24 The uncertainties in these measurements, used to weight the data, were taken as 0.003 and 0.005 cm−1, respectively.
The error limits are 1σ and are right justified to the last digit on the line. ν0 corresponds to ΔG1/2.
Standard deviation of the fit.