The Electron Mass and Calcium Isotope Shifts

1. Front Matter

   Pages i-xiv

   PDF

2. Introduction

   • Florian Köhler-Langes

   Pages 1-4

3. The g-Factor - Exploring Atomic Structure and Fundamental Constants

   • Florian Köhler-Langes

   Pages 5-32

4. Penning Trap Physics

   • Florian Köhler-Langes

   Pages 33-74

5. Towards the Measurement of the Larmor-to-Cyclotron Frequency Ratio

   • Florian Köhler-Langes

   Pages 75-116

6. Determination of the Atomic Mass of the Electron

   • Florian Köhler-Langes

   Pages 117-133

7. Probing the Isotope Shift: \(\varDelta g=g({}^{40}\mathrm{Ca}^{17+})-g(^{48}\mathrm{Ca}^{17+})\)

   • Florian Köhler-Langes

   Pages 135-145

8. Outlook - A New Generation of High-Precision Penning Trap

   • Florian Köhler-Langes

   Pages 147-165

9. Back Matter

   Pages 167-168

   PDF

This thesis presents the first isotope-shift measurement of bound-electron g-factors of highly charged ions and determines the most precise value of the electron mass in atomic mass units, which exceeds the value in the literature by a factor of 13. As the lightest fundamental massive particle, the electron is one of nature’s few central building blocks. A precise knowledge of its intrinsic properties, such as its mass, is mandatory for the most accurate tests in physics - the Quantum Electrodynamics tests that describe one of the four established fundamental interactions in the universe. The underlying measurement principle combines a high-precision measurement of the Larmor-to-cyclotron frequency ratio on a single hydrogen-like carbon ion studied in a Penning trap with very accurate calculations of the so-called bound-electron g-factor. For the isotope-shift measurement, the bound-electron g-factors of two lithium-like calcium isotopes have been measured with relative uncertainties of a few 10^{-10}, constituting an as yet unrivaled level of precision for lithium-like ions.
 

• Precision Atomic Physics
• Electron Mass Precision Measurement
• Isotope Shift Precision Measurement
• Bound-electron G-factor
• Penning Trap
• Hydrogen-like Carbon
• Lithium-like Calcium Isotopes

• Department of Stored and Cooled Ions, Max-Planck-Institut für Kernphysik , Heidelberg, Germany

  Florian Köhler-Langes

2005-2011: Study of physics in Göttingen with stopovers at CERN and the University Claude Bernard Lyon 1. 2011: Diploma in high-energy physics, title: "Performance Study of a Diamond Pixel Detector Prototype for Future ATLAS Upgrades."
2011: Scientist at the Max Planck Institute for Dynamics and Self-Organization, topic: Installation of an experimental setup for the analysis of high turbulences.


2011-2015: PhD student at the GSI Helmholtz Centre for Heavy Ion Research. Since 2015 postdoc at the Max Planck Institute for Nuclear Physics, topic: Installation of a new experimental setup for the most precise determination of the atomic proton and neutron mass.

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