New Fine Structure in Neutral Oxygen

Lee W. Parker; John R. Holmes

doi:10.1103/PhysRev.90.142

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New Fine Structure in Neutral Oxygen

Lee W. Parker and John R. Holmes

University of Southern California, Los Angeles, California

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Phys. Rev. 90, 142 – Published 1 April, 1953

DOI: https://doi.org/10.1103/PhysRev.90.142

Abstract

Untabulated fine structure in O I has been resolved in the triplet multiplets $λ 8446 (3 s {}^{3}S_{1} - 3 p {}^{3}P_{210})$ , $λ 2884 (3 p {}^{3}P_{21} - 3 d^{'} {}^{3}P_{2})$ , and $λ 4368 (3 s {}^{3}S_{1} - 4 p {}^{3}P_{210})$ . Interferometer patterns of these lines were analyzed to obtain splittings and relative intensities. Listed as a doublet, $λ 8446$ has three components whose relative intensities allowed establishment of the $3 p {}^{3}P_{210}$ anomalous splitting as follows: $J = 1$ lies 0.559(±0.003) ${cm}^{- 1}$ below $J = 2$ , and $J = 0$ lies 0.158(±0.002) ${cm}^{- 1}$ above $J = 2$ , in agreement with Edlén. $λ 2884$ , heretofore found single, has two components, separated by 0.558(±0.002) ${cm}^{- 1}$ . Two components of $λ 4368$ , previously considered single, were resolved and found to have a separation of 0.300(±0.001) ${cm}^{- 1}$ , the weaker component having the shorter wavelength. From the relative intensities it is deduced that $J = 0$ lies above the degenerate $J = 2, 1$ level of the state $4 p {}^{3}P_{210}$ , which, like $3 p {}^{3}P_{210}$ , is perturbed by an unobserved state in the displaced ( ${}^{2}D$ ) system.

References (8)

B. Edlén, Kl. Svenska Vetenskapsakad. Handl., Series 3, Vol. 20, No. 10 (1943)
L. W. Parker and J. R. Holmes, J. Opt. Soc. Am. 43, 103 (1953)
D. O. Davis and K. W. Meissner have reported the complete structures of λλ8446, 7254, and 6046 in J. Opt. Soc. Am. 42, 871 (1952)
S. Tolansky, High Resolution Spectroscopy (Pitman, New York, 1947), p. 270
C. Runge and F. Paschen, Ann. Phys. Chem. 61, 641 (1897)
[4], p. 272
E. U. Condon and G. H. Shortley, Theory of Atomic Spectra (Cambridge University Press, Cambridge, 1935), pp. 218 and 367
[7], p. 245

[c1] B. Edlén, Kl. Svenska Vetenskapsakad. Handl., Series 3, Vol. 20, No. 10 (1943)

[c2] L. W. Parker and J. R. Holmes, J. Opt. Soc. Am. 43, 103 (1953)

[c3] D. O. Davis and K. W. Meissner have reported the complete structures of λλ8446, 7254, and 6046 in J. Opt. Soc. Am. 42, 871 (1952)

[c4] S. Tolansky, High Resolution Spectroscopy (Pitman, New York, 1947), p. 270

[c5] C. Runge and F. Paschen, Ann. Phys. Chem. 61, 641 (1897)

[c6] [4], p. 272

[c7] E. U. Condon and G. H. Shortley, Theory of Atomic Spectra (Cambridge University Press, Cambridge, 1935), pp. 218 and 367

[c8] [7], p. 245

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New Fine Structure in Neutral Oxygen

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