# The electron mass from g-factor measurements on hydrogen-like carbon 12C5+

@article{Khler2015TheEM, title={The electron mass from g-factor measurements on hydrogen-like carbon 12C5+}, author={F K{\"o}hler and Sven Sturm and A Kracke and G{\"u}nter Werth and Wolfgang Quint and Klaus Blaum}, journal={Journal of Physics B: Atomic, Molecular and Optical Physics}, year={2015}, volume={48} }

The electron mass in atomic mass units has been determined with a relative uncertainty of 2.8 × 10 − 11 ?> (Sturm et al 2014 Nature 506 467–70), which represents a 13-fold improvement of the 2010 CODATA value (Mohr et al 2012 Rev. Mod. Phys. 84 1527–605). The underlying measurement principle combines a high-precision measurement of the Larmor-to-cyclotron frequency ratio on a single hydrogen-like carbon ion in a Penning trap with a corresponding very accurate g-factor calculation. Here, we…

## Figures and Tables from this paper

## 39 Citations

Bound-Electron g-Factor Measurements for the Determination of the Electron Mass and Isotope Shifts in Highly Charged Ions

- Physics
- 2015

In the context of this thesis the electron mass has been determined in atomic mass units with a relative uncertainty of 28 ppt, which represents a 13-fold improvement of the 2010 CODATA value. The…

Isotope dependence of the Zeeman effect in lithium-like calcium

- PhysicsNature communications
- 2016

Calculations and experiments on the isotope dependence of the Zeeman effect in lithium-like calcium ions and the good agreement between the theoretical predicted recoil contribution and the high-precision g-factor measurements paves the way for a new generation of BS-QED tests.

High-precision mass spectrometer for light ions

- PhysicsPhysical Review A
- 2019

The precise knowledge of the atomic masses of light atomic nuclei, e.g. the proton, deuteron, triton and helion, is of great importance for several fundamental tests in physics. However, the latest…

Determination of the Atomic Mass of the Electron

- Physics
- 2017

In the present chapter, I will present the measurement results of the atomic electron mass, which have been published in Sturm et al. (Nature, 506:467–470, 2014, [1]). An extensive paper focusing in…

First measurement of the ground-state g-factor of boronlike argon 40Ar13+ in Alphatrap

- Physics
- 2019

In this thesis, the first high-precision measurement of the ground-state g-factor of a boronlike ion, 40Ar13+, with a fractional uncertainty of 1.4× 10−9, is presented. The measurement has been…

Electron Magnetic Moment in Highly Charged Ions: The ARTEMIS Experiment

- PhysicsAnnalen der Physik
- 2018

The magnetic moment (g‐factor) of the electron is a fundamental quantity in physics that can be measured with high accuracy by spectroscopy in Penning traps. Its value has been predicted by theory,…

g Factor of Lithiumlike Silicon: New Challenge to Bound-State QED.

- PhysicsPhysical review letters
- 2019

A significant simultaneous improvement is presented of both theoretical and experimental values of the g factor of lithiumlike silicon, which is accurate enough to test the many-electron two-loop contributions of the bound-state QED.

Implementation and commissioning of the phase-imaging ion-cyclotron-resonance method and mass measurements of exotic copper isotopes with ISOLTRAP

- Physics
- 2018

An essential component of modern nuclear physics is the description of the composition of the atomic nucleus through experimental and theoretical applications. With only two components, the protons…

Proton–electron mass ratio by high-resolution optical spectroscopy of ion ensembles in the resolved-carrier regime

- Physics, Chemistry
- 2021

Optical spectroscopy in the gas phase is a key tool to elucidate the structure of atoms and molecules and of their interaction with external fields. The line resolution is usually limited by a…

g Factor of Boronlike Argon ^{40}Ar^{13+}.

- PhysicsPhysical review letters
- 2019

The experimental result distinguishes between existing predictions that are in disagreement, and lays the foundations for an independent determination of the fine-structure constant.

## References

SHOWING 1-10 OF 42 REFERENCES

Determination of the electron’s mass from g-factor experiments on 12C5+ and 16O7+

- Physics, Chemistry
- 2003

High-accuracy measurement of the magnetic moment anomaly of the electron bound in hydrogenlike carbon.

- PhysicsPhysical review letters
- 2000

This is the most precise determination of an atomic g(J) factor so far of a bound electron bound in hydrogenlike carbon (12C5+): g(exp) = 2.001 041 596 (5).

Electronic g factor of hydrogenlike oxygen 16O7+.

- PhysicsPhysical review letters
- 2004

An experimental value for the g factor of the electron bound in hydrogenlike oxygen is found to be g(expt)=2.000 047 025 4 (15)(44), which represents a stringent test of bound-state quantum electrodynamics to a 0.25% level.

g factor of hydrogenlike ²⁸Si¹³⁺.

- PhysicsPhysical review letters
- 2011

The experimental value of the g factor of the electron bound in hydrogenlike ²⁸Si¹³⁺ by using a single ion confined in a cylindrical Penning trap is determined, in excellent agreement with the state-of-the-art theoretical value.

High-precision measurement of the atomic mass of the electron

- PhysicsNature
- 2014

A very precise measurement of the magnetic moment of a single electron bound to a carbon nucleus with a state-of-the-art calculation in the framework of bound-state quantum electrodynamics, and the precision of the resulting value for the atomic mass of the electron surpasses the current literature value of the Committee on Data for Science and Technology (CODATA).

Determination of the electron's atomic mass and the proton/electron mass ratio via Penning trap mass spectroscopy.

- PhysicsPhysical review letters
- 1995

Accuracy of the electron's atomic mass has been improved tenfold by comparing cyclotron frequencies of electrons and single C6+ ions alternately confined to the same uniform magnetic field in a…

g Factor of lithiumlike silicon 28Si11+.

- PhysicsPhysical review letters
- 2013

The measured value of lithiumlike silicon (28)Si(11+) is in excellent agreement with the theoretical prediction and yields the most stringent test of bound-state QED for the g factor of the 1s(2)2s state and the relativistic many-electron calculations in a magnetic field.

New determination of the electron's mass.

- PhysicsPhysical review letters
- 2002

A new independent value for the electron's mass in units of the atomic mass unit is presented, m(e) = 0.000 548 579 909 2(4) u. The value is obtained from our recent measurement of the g factor of…

Thousandfold improvement in the measured antiproton mass.

- PhysicsPhysical review letters
- 1990

Comparisons of antiproton and proton cyclotron frequencies yield the ratio of inertial masses M(p)/M(p), which is 1000 times more accurate than previous measurements of this ratio using exotic atoms and is the most precise test of CPT invariance with baryons.