Fine Structure of the Hydrogen Atom. VI

Phys. Rev. 89, 106 – Published 1 January 1953
Edward S. Dayhoff, Sol Triebwasser, and Willis E. Lamb, Jr.


Measurements of improved accuracy of transition frequencies from the 2S122(m=+12) state to several of the 2P322 magnetic sub-states in deuterium are presented and analyzed. The shape of the observed resonance curves is discussed and compared with theory.

The experimental result is given for the 2P322-2S122 separation, ΔED-SD=9912.59±0.10 Mc/sec, for deuterium. This is combined with the result for SD from the preceding article to obtain the 2P322-2P122 separation, ΔED=10,971.59±0.20 Mc/sec for deuterium. From ΔED and the auxiliary constants RD and c a new value is computed for the fine structure constant α=1(137.0365±0.0012). The uncertainty stated is considered to be a limit of error for our experimental procedure without allowance for the uncertainty of the auxiliary constants.


  • Received 15 September 1952
  • Published in the issue dated January 1953

© 1953 The American Physical Society

Authors & Affiliations

Edward S. Dayhoff*, Sol Triebwasser, and Willis E. Lamb, Jr.

  • Radiation Laboratory, Columbia University, New York, New York

  • *Present address: Central Radio Propagation Laboratory, Microwave Standards Section, National Bureau of Standards, Washington, D. C.
  • Present address: Watson Scientific Computing Laboratory, Columbia University, New York, New York.
  • Present address: Department of Physics, Stanford University, Stanford, California.

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