By Florian Köhler-Langes

This thesis offers the 1st isotope-shift size of bound-electron g-factors of hugely charged ions and determines the main detailed price of the electron mass in atomic mass devices, which exceeds the worth within the literature by means of an element of thirteen. because the lightest primary titanic particle, the electron is one in every of nature’s few crucial development blocks. an exact wisdom of its intrinsic houses, akin to its mass, is crucial for the main exact assessments in physics - the Quantum Electrodynamics checks that describe one of many 4 demonstrated basic interactions within the universe. The underlying dimension precept combines a high-precision size of the Larmor-to-cyclotron frequency ratio on a unmarried hydrogen-like carbon ion studied in a Penning seize with very actual calculations of the so-called bound-electron g-factor. For the isotope-shift dimension, the bound-electron g-factors of 2 lithium-like calcium isotopes were measured with relative uncertainties of some 10^{-10}, constituting an as but unequalled point of precision for lithium-like ions.

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21) In contrast to the eigenfrequencies of an ideal Penning trap, all these frequency corrections depend on the energies/amplitudes of the eigenmotions. Elaborated trap designs, see Sect. 3 and especially Chap. 7, and, in addition, very small amplitudes minimize these shifts. 40 3 Penning Trap Physics Magnetic Field Imperfections With the same assumptions made for the electric field imperfections, the dominant frequency shifts, which arise from magnetic field imperfections, are generated by the lower-order terms of the magnetic field.

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The Electron Mass and Calcium Isotope Shifts: High-Precision by Florian Köhler-Langes
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