The Electric Resonance Method of Radiofrequency Spectroscopy The Moment of Inertia and Electric Dipole Moment of CsF

Harold Kenneth Hughes

doi:10.1103/PhysRev.72.614

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The Electric Resonance Method of Radiofrequency Spectroscopy The Moment of Inertia and Electric Dipole Moment of CsF

Harold Kenneth Hughes^*

Pupin Physics Laboratories, Columbia University, New York, New York

^*Now at Socony-Vacuum Laboratories, Brooklyn, New York.

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Phys. Rev. 72, 614 – Published 1 October, 1947

DOI: https://doi.org/10.1103/PhysRev.72.614

Abstract

This paper describes a new method of radiofrequency spectroscopy in which transitions between the energy levels of a single rotational state of a linear rotator in an electric field are caused by a superimposed radiofrequency field. The method utilizes a molecular beam and has been applied to the measurement of the moment of inertia, $I$ , and the electric dipole moment, $μ$ , of CsF. Values for these quantities are: $I = (187 \pm 22) 10^{- 40}$ g ${cm}^{2}$ and $μ = 7.3 \pm 0.5$ Debye. The internuclear distance, derived from the moment of inertia, is 2.60±0.16 angstroms.

References (22)

H. Hughes, Phys. Rev. 70, 570 and 909 (1946)
Dr. U. Fano, National Bureau of Standards, private communication
Dakin, Good, and Coles, Phys. Rev. 70, 560 (1946)
R. G. J. Fraser, Molecular Beams (Chemical Publishing Company, New York, 1938) R. G. J. Fraser, Molecular Rays (The Macmillan Company, New York, 1931)
Erwin Wrede, Zeits. f. Physik 44, 261 (1927)
Max Wohlwill, Zeits. f. Physik 80, 67 (1932)
H. Scheffers, Physik. Zeits. 41, 89 and 98 (1940) Rodebush, Murray, and Bixler, J. Chem. Phys. 4, 372 (1936)
Estermann, Zeits f. physik. Chemie B1, 161 (1928) ibid.2, 287 (1929) Leipziger Vorträge (1929), pp. 17 ff
Rabi, Millman, Kusch, and Zacharias, Phys. Rev. 55, 526 (1939)
Kronig, Proc. Nat. Acad. Wash. 12, 608 (1926)
F. Brouwer, Dissertation, Amsterdam, 1930
Dr. Willis Lamb, private communication
Sidney Millman, Phys. Rev. 47, 739 (1935)
Rabi, Kellogg, and Zacharias, Phys. Rev. 46, 157 (1934)
Albright, Handbook of Chemistry and Physics (Chemical Rubber Publishing Company, Cleveland, 1942), 26 ed., p. 1911
Gerhard Herzberg, Molecular Spectra and Molecular Structure (Prentice-Hall, Inc., New York, 1939), p. 482
Maxwell, Hendricks, and Mosley, Phys. Rev. 52, 968 (1937)
Internationale Tabellen zur Bestimmung von Kristall-strukturen, Vol. II, p. 611
Schomaker and Stevenson, J. Am. Chem. Soc. 63, 37 (1941)
W. Gordy, Phys. Rev. 69, 604 (1946)
Oscar K. Rice, Electronic Structure and Chemical Binding (McGraw-Hill Book Company, Inc., New York, 1940), p. 253
Hannay and Smyth, J. Am. Chem. Soc. 68, 171 (1946)

[c1] H. Hughes, Phys. Rev. 70, 570 and 909 (1946)

[c2] Dr. U. Fano, National Bureau of Standards, private communication

[c3] Dakin, Good, and Coles, Phys. Rev. 70, 560 (1946)

[c4] R. G. J. Fraser, Molecular Beams (Chemical Publishing Company, New York, 1938) R. G. J. Fraser, Molecular Rays (The Macmillan Company, New York, 1931)

[c5] Erwin Wrede, Zeits. f. Physik 44, 261 (1927)

[c6] Max Wohlwill, Zeits. f. Physik 80, 67 (1932)

[c7] H. Scheffers, Physik. Zeits. 41, 89 and 98 (1940) Rodebush, Murray, and Bixler, J. Chem. Phys. 4, 372 (1936)

[c8] Estermann, Zeits f. physik. Chemie B1, 161 (1928) ibid.2, 287 (1929) Leipziger Vorträge (1929), pp. 17 ff

[c9] Rabi, Millman, Kusch, and Zacharias, Phys. Rev. 55, 526 (1939)

[c10] Kronig, Proc. Nat. Acad. Wash. 12, 608 (1926)

[c11] F. Brouwer, Dissertation, Amsterdam, 1930

[c12] Dr. Willis Lamb, private communication

[c13] Sidney Millman, Phys. Rev. 47, 739 (1935)

[c14] Rabi, Kellogg, and Zacharias, Phys. Rev. 46, 157 (1934)

[c15] Albright, Handbook of Chemistry and Physics (Chemical Rubber Publishing Company, Cleveland, 1942), 26 ed., p. 1911

[c16] Gerhard Herzberg, Molecular Spectra and Molecular Structure (Prentice-Hall, Inc., New York, 1939), p. 482

[c17] Maxwell, Hendricks, and Mosley, Phys. Rev. 52, 968 (1937)

[c18] Internationale Tabellen zur Bestimmung von Kristall-strukturen, Vol. II, p. 611

[c19] Schomaker and Stevenson, J. Am. Chem. Soc. 63, 37 (1941)

[c20] W. Gordy, Phys. Rev. 69, 604 (1946)

[c21] Oscar K. Rice, Electronic Structure and Chemical Binding (McGraw-Hill Book Company, Inc., New York, 1940), p. 253

[c22] Hannay and Smyth, J. Am. Chem. Soc. 68, 171 (1946)

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The Electric Resonance Method of Radiofrequency Spectroscopy The Moment of Inertia and Electric Dipole Moment of CsF

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