The Principal Series of Potassium, Rubidium, and Cesium in Absorption

H. R. Kratz

doi:10.1103/PhysRev.75.1844

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The Principal Series of Potassium, Rubidium, and Cesium in Absorption

H. R. Kratz^*

University of Wisconsin, Madison, Wisconsin

^*Now at the Research Laboratory, General Electric Company, Schenectady, New York.

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Phys. Rev. 75, 1844 – Published 15 June, 1949

DOI: https://doi.org/10.1103/PhysRev.75.1844

Abstract

The principal series of potassium, rubidium, and cesium in absorption have been measured. The doublet fine-structure has been resolved out to $17 p$ in potassium, to $26 p$ in rubidium, and to $21 p$ in cesium; the doublet fine-structure interval varies in each spectrum inversely as the cube of the effective principal quantum number. In cesium, the doublet intensity ratio, instead of having a maximum, increases with increasing $n$ as far as it can be followed. Higher series members, with their doublet fine-structure unresolved, have been measured to $79 p$ in potassium, to $77 p$ in rubidium, and to $73 p$ in cesium. The series limits, calculated from the lowest hyperfine structure levels, are: $K^{39}$ $4 s {}^{2}S_{\frac{1}{2}}^{1} - \infty = 35009.83$ ${cm}^{- 1}$ , ${Rb}^{85}$ $5 s {}^{2}S_{\frac{1}{2}}^{2} - \infty = 33691.02$ ${cm}^{- 1}$ , Cs $6 s {}^{2}S_{\frac{1}{2}}^{3} - \infty = 31406.71$ ${cm}^{- 1}$ . The hyperfine structure of the ground level $6 s {}^{2}S_{\frac{1}{2}}$ has been resolved in each member of the principal series of cesium.

References (19)

Omitted endnote
R. W. Wood and R. Fortrat, Astrophys. J. 43, 73 (1916)
E. R. Thackeray, Phys. Rev. 75, 1840 (1949)
N. A. Kent, Astrophys. J. 40, 337 (1914)
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[c1] Omitted endnote

[c2] R. W. Wood and R. Fortrat, Astrophys. J. 43, 73 (1916)

[c3] E. R. Thackeray, Phys. Rev. 75, 1840 (1949)

[c4] N. A. Kent, Astrophys. J. 40, 337 (1914)

[c5] Huppers, Zeits. f. Wiss. Phot. 13, 46 (1914)

[c6] P. V. Bevan, Proc. Roy. Soc. London A83, 421 (1910)

[c7] S. Datta, Proc. Roy. Soc. London A99, 69 (1921)

[c8] H. R. Kratz and J. E. Mack, J. Opt. Soc. Am. 32, 457 (1942)

[c9] H. S. Roberts, J. Opt. Soc. Am. 6, 965 (1922)

[c10] J. Strong, Procedures in Experimental Physics (Prentice Hall, Inc., New York, 1938), p. 531

[c11] R. W. Ditchburn and J. C. Gilmour, Rev. Mod. Phys. 13, 310 (1941)

[c12] Trans. Int. Astron. Union 2, 18 (1925)

[c13] L. P. Granath and R. K. Stranathan, Phys. Rev. 48, 725 (1935)

[c14] S. Millman and P. Kusch, Phys. Rev. 60, 91 (1941)

[c15] W. Pauli, Zeits. f. Physik 43, 601 (1929)

[c16] C. G. Darwin, Proc. Roy. Soc. London A116, 227 (1927) ibid.A118, 654 (1928)

[c17] P. A. M. Dirac, Proc. Roy. Soc. London A117, 610 (1927) ibid.A118, 351 (1928)

[c18] W. Gordon, Zeits. f. Physik 48, 11 (1929)

[c19] S. Sambursky, Zeits. f. Physik 49, 731 (1928)

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The Principal Series of Potassium, Rubidium, and Cesium in Absorption

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