The Ultraviolet Spectrum of Ammonia. II. The Rotational Structure of Some Bands in the Schumann Region

A. B. F. Duncan; G. R. Harrison

doi:10.1103/PhysRev.49.211

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The Ultraviolet Spectrum of Ammonia. II. The Rotational Structure of Some Bands in the Schumann Region

A. B. F. Duncan

G. R. Harrison

Department of Chemistry, Brown University

Department of Physics, Massachusetts Institute of Technology

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Phys. Rev. 49, 211 – Published 1 February, 1936

DOI: https://doi.org/10.1103/PhysRev.49.211

Abstract

Seven bands of ammonia between 1620 and 1450A have been photographed in absorption with a dispersion of 1.3A/mm. These are the 0,2-0,8 bands of the second electronic state above the normal. Each band has one $P$ and one $R$ branch, and a broad intense line as a $Q$ branch. Within the limit of observational errors, which were large in this region, the moment of inertia $A^{'}$ is only slightly larger than $A^{''}$ , and $C^{'}$ is about equal to $C^{''}$ , so that the dimensions are not greatly changed in the excited state.

References (7)

A. B. F. Duncan, Phys. Rev. 47, 822 (1935)
G. R. Harrison, Rev. Sci. Inst. 2, 600 (1931) ibid.4, 651 (1933)
J. C. Boyce and C. A. Rieke, Phys. Rev. 47, 654 (1935)
D. M. Dennison, Rev. Mod. Phys. 3, 280 (1931)
G. H. Dieke and G. B. Kistiakowsky, Phys. Rev. 45, 4 (1934)
P. Lueg and K. Hedfeld, Zeits. f. Physik 75, 599 (1932)
W. Jevons, Report on Band-Spectra of Diatomic Molecules (University Press, Cambridge, 1932)

[c1] A. B. F. Duncan, Phys. Rev. 47, 822 (1935)

[c2] G. R. Harrison, Rev. Sci. Inst. 2, 600 (1931) ibid.4, 651 (1933)

[c3] J. C. Boyce and C. A. Rieke, Phys. Rev. 47, 654 (1935)

[c4] D. M. Dennison, Rev. Mod. Phys. 3, 280 (1931)

[c5] G. H. Dieke and G. B. Kistiakowsky, Phys. Rev. 45, 4 (1934)

[c6] P. Lueg and K. Hedfeld, Zeits. f. Physik 75, 599 (1932)

[c7] W. Jevons, Report on Band-Spectra of Diatomic Molecules (University Press, Cambridge, 1932)

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The Ultraviolet Spectrum of Ammonia. II. The Rotational Structure of Some Bands in the Schumann Region

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References (7)

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