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An interference method for measuring atomic state parameters

Yurii L. Sokolov

A new approach to the observation of the stationary interference pattern of atomic states is suggested. A number of experiments performed from 1970 to 1998 using various interferometer designs are described. Among these are the precision measurements of Lamb shift in the hydrogen atom and the discovery, in the course of this work, of a long-range interaction between the moving excited hydrogen atom and the metal surface.

Physics-UspekhiMay 31, 199914 citations

Measurement of the Lamb shift in the hydrogen atom

Yurii L. Sokolov, Valery P. Yakovlev

A principle is proposed for the observation of the stationary interference pattern of two phase-shifted components of the 2p (or 2s) state of the hydrogen atom (Yu. L. Sokolov, Sov. Phys. JETP 36, 243 (1973)); (Proc. 6-th Internat. Conf. on Atomic Phys., Riga, 1978, p. 207). An atomic interferometer, a device analogous in principle to a two-channel optical (such as Michelson's) interferometer, is used to measure the frequency of the (2s/sub 1/2/, F = 0)--(2p/sub 1/2/, F = 0) transition in the hydrogen atom, which is found to equal 909.9014 +- 0.0019 MHz. The corresponding Lamb shift is delta(H, n = 2) = 1057.8594 +- 0.0019 MHz.A principle is proposed for the observation of the stationary interference pattern of two phase-shifted components of the 2p (or 2s) state of the hydrogen atom (Yu. L. Sokolov, Sov. Phys. JETP 36, 243 (1973)); (Proc. 6-th Internat. Conf. on Atomic Phys., Riga, 1978, p. 207). An atomic interferometer, a device analogous in principle to a two-channel optical (such as Michelson's) interferometer, is used to measure the frequency of the (2s/sub 1/2/, F = 0)--(2p/sub 1/2/, F = 0) transition in the hydrogen atom, which is found to equal 909.9014 +- 0.0019 MHz. The corresponding Lamb shift is delta(H, n = 2) = 1057.8594 +- 0.0019 MHz.

Soviet Physics UspekhiOct 31, 19824 citations

Interference of atomic states in an external field and the Lamb shift in hydrogen-like helium

Vitalii G Pal'chikov, Yu. L. Sokolov, Valery P. Yakovlev

Optics and SpectroscopyNov 1, 19990 citations

Influence of Lamb Shift on the Interference of Excited States of Hydrogen Atoms

Yu. L. Sokolov

Jan 1, 19702 citations

Atomic state interference with fast hydrogen-like helium

Vitalii G Pal'chikov, Valery P. Yakovlev, Yu. L. Sokolov

We study the stationary interference of the 2S1/2 or 2P1/2 states due to the passage of metastable hydrogen-like helium ions 4He+ through static electric fields. The basic theory of atomic state interference is presented and experimental conditions allowing observation of the interference pattern with a beam of 4He+ ions are analyzed. We show that optimal conditions are within the reach of modern day experimental techniques. We present theoretical interference curves for two types of atomic interferometers and discuss in detail approaches for the precise measurement of the Lamb shift δn=2 = 2S1/2 2P1/2 in 4He+. PACS Nos.: 31.30.Jv, 32.70.Fw, 39.10.+j, 39.20.+qWe study the stationary interference of the 2S1/2 or 2P1/2 states due to the passage of metastable hydrogen-like helium ions 4He+ through static electric fields. The basic theory of atomic state interference is presented and experimental conditions allowing observation of the interference pattern with a beam of 4He+ ions are analyzed. We show that optimal conditions are within the reach of modern day experimental techniques. We present theoretical interference curves for two types of atomic interferometers and discuss in detail approaches for the precise measurement of the Lamb shift δn=2 = 2S1/2 2P1/2 in 4He+. PACS Nos.: 31.30.Jv, 32.70.Fw, 39.10.+j, 39.20.+q

Canadian Journal of PhysicsNov 1, 20040 citations

ATOMIC INTERFEROMETER AND COHERENT MIXING OF 2 S AND 2 P STATES IN THE HYDROGEN ATOM: APPLICATION TO THE LAMB SHIFT MEASUREMENTS

Vitalii G Pal'chikov, Yu. L. Sokolov, Valery P. Yakovlev

Symposium on Frequency Standards and MetrologyMay 1, 20020 citations

Interference of atomic states in external field and Lamb shift measurement in hydrogen-like helium

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