BIBFRAME Work

Title

The Electron Mass and Calcium Isotope Shifts

Type

  • Text
  • Monograph

Contribution

Köhler-Langes, Florian (author)

Subject

Language

Classification

Content

Summary

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. Here, the g-factors of the valence electrons 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. These calcium isotopes provide a unique system across the entire nuclear chart to test the pure relativistic nuclear recoil effect.

Table of Contents

Introduction -- The g-Factor - Exploring Atomic Structure and Fundamental Constants -- Penning Trap Physics -- Towards the Measurement of the Larmor-to-cyclotron Frequency Ratio -- Determination of the Atomic Mass of the Electron -- Outlook - A New Generation of High-Precision Penning Trap.

Authorized Access Point

Köhler-Langes, Florian. The Electron Mass and Calcium Isotope Shifts

Admin Metadata

  • Date: 2026-09-11T20:18:45.957436+00:00
  • Agent: cbc
  • Status: c
  • Derived from: 21939561

Admin Metadata

  • Date: 2026-09-11
  • Cataloger id: Unknown
  • Description level: http://id.loc.gov/ontologies/bibframe-2-6-0/
  • Description language: eng
  • Description authentication: pcc

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