Measurement of the Lamb shift in n = 2 to n = 1 transitions of hydrogen-like and helium-like uranium.

摘要

Precision experimental tests in high Z atoms have important implications for current theories of quantum electrodynamics (QED). Of particular interest are tests in hydrogen-like and helium-like ions, where the energy levels can be measured to high precision, probing QED effects without complications from multi-electron interactions. Hydrogen-like and helium-like uranium are the current limit of high field atomic measurements on few electron systems. I report a measurement of the ;These measurements were obtained with a Doppler tuned spectrometer, a proven technique at lower Z and lower energies, though new at the stiff x-ray energies (;Predictions of the 2