The radiative correction to the nuclear charge radius contribution to the Lamb shift of order α(Zα)5m3r < r 2 > is calculated. In view of the recent high precision experimental data, this theoretical correction produces a significant contribution to the hydrogen-deuterium isotopic shift. Typeset using REVTEX E-mail address: [email protected], [email protected] Temporary address. Permanent addr...

The radiative correction to the nuclear charge radius contribution to the Lamb shift of order α(Zα)mr < r 2 > is calculated. In view of the recent high precision experimental data, this theoretical correction produces a significant contribution to the hydrogen-deuterium isotopic shift. Typeset using REVTEX ∗E-mail address: [email protected], [email protected] †Temporary address. ‡Permanent add...

The radial flow of neutral particles in an electron-cyclotron-resonance (ECR) argon plasma has been measured by using a newly developed high resolution laser induced fluorescence (LIF) measurement system. The flow velocity is determined by the Doppler shift of the LIF spectrum. A very high accuracy calibration of an excitation laser has been achieved by installing a saturated absorption spectro...

At a recent NATO ASI summer school held in Edirne, Turkey, ( 1) a discussion developed on how it seemed to be possible to use classical methods to calculate atomic spontaneous emission rates, but not the Lamb shift. This point of view has particularly been emphasized in Jackson’s book, Classical Electrodynamics , in which he flat-out states that a classical argument based on radiation-reaction ...

As applied by Bethe, Brown, and Stehn in 1950, the first theory of the Lamb shift, although it contains many physical and mathematical approximations, is known to be in agreement with experiment (tens of MHz discrepancies). In the present work, thanks to new analytic formulas and computer means, we perform their original method of calculation again, without two approximations in the contributio...