Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

The Uncertainty Principle

The Uncertainty Principle

Werner Heisenberg considered the limits of how accurately one can measure properties of an electron or other microscopic particles. He determined that there is a fundamental limit to how accurately one can measure both a particle’s position and its momentum simultaneously. The more accurate the measurement of the momentum of a particle is known, the less accurate the position at that time is known and vice versa. This is what is now called the Heisenberg uncertainty principle. He...

The Pauli Exclusion Principle

The Pauli Exclusion Principle

The arrangement of electrons in the orbitals of an atom is called its electron configuration. We describe an electron configuration with a symbol that contains three pieces of information:

The Quantum-Mechanical Model of an Atom

The Quantum-Mechanical Model of an Atom

Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.

The Bohr Model

The Bohr Model

Following the work of Ernest Rutherford and his colleagues in the early twentieth century, the picture of atoms consisting of tiny dense nuclei surrounded by lighter and even tinier electrons continually moving about the nucleus was well established. This picture was called the planetary model since it pictured the atom as a miniature “solar system” with the electrons orbiting the nucleus like planets orbiting the sun. The simplest atom is hydrogen, consisting of a single proton as...

Radical Substitution: Hydrogenolysis of Alkyl Halides with Tributyltin Hydride

Radical Substitution: Hydrogenolysis of Alkyl Halides with Tributyltin Hydride

Radical substitution reactions can be used to remove functional groups from molecules. The hydrogenolysis of alkyl halides is one such reaction, where the weak Sn–H bond in tributyltin hydride reacts with alkyl halides to form alkanes. Here, the reagent Bu3SnH yields tributyltin halide as a byproduct.
The bonds formed in this reaction are stronger than the bonds broken, making it energetically favorable. The reaction follows a radical chain mechanism similar to radical halogenation...

Thomson's e/m Experiment

Thomson's e/m Experiment

In a beam of charged particles created by a heated cathode, the particles move at different speeds. However, many applications need a beam with uniform particle speeds. An arrangement known as a velocity selector uses electric and magnetic fields to pick particles with a particular speed from the beam.
A particle with charge q, speed v, and mass m enters an area from the top, where the magnetic and electric fields are perpendicular both to the particle's motion and to one another. The...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Radiative cooling of isolated Al-5 cluster ions observed on ultralong timescales as a test case for the validity of the harmonic cascade model.

Physical chemistry chemical physics : PCCP·2026

Same author

Fermion-Selective Tests of New Physics with the Bound-Electron g Factor.

Physical review letters·2026

Same author

Observation of quantum effects on radiation reaction in strong fields.

Nature communications·2026

Same author

A cryogenic Paul trap for probing the nuclear isomeric excited state <math><mmultiscripts><mrow></mrow> <mrow></mrow> <mrow><mn>229</mn> <mtext>m</mtext></mrow></mmultiscripts></math> Th <math><mmultiscripts><mrow></mrow> <mrow></mrow> <mrow><mn>3</mn> <mo>+</mo></mrow></mmultiscripts></math>.

The European physical journal. D, Atomic, molecular, and optical physics·2025

Same author

Testing Strong-Field QED to Second Order in the Highly Correlated Atomic System Berylliumlike Pb^{78+} by Electron-Ion Collision Spectroscopy.

Physical review letters·2025

Same author

Coherent spectroscopy with a single antiproton spin.

Nature·2025

Search research articles

Related Experiment Video

Updated: Jul 15, 2025

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

Stringent test of QED with hydrogen-like tin.

J Morgner¹, B Tu², C M König²

¹Max-Planck-Institut für Kernphysik, Heidelberg, Germany. Jonathan.Morgner@mpi-hd.mpg.de.

|October 4, 2023

Summary

This study precisely measured the gyromagnetic factor of highly charged tin ions, providing a stringent test of quantum electrodynamics (QED) in strong fields. The results challenge existing QED tests and may surpass them with future theoretical advancements.

More Related Videos

Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown

Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown

Published on: February 14, 2014

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

Published on: March 29, 2016

Related Experiment Videos

Last Updated: Jul 15, 2025

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown

Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown

Published on: February 14, 2014

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

Published on: March 29, 2016

Area of Science:

Atomic Physics
Quantum Electrodynamics (QED)
High-Energy Ion Physics

Background:

Inner-shell electrons experience extreme electric fields near the nucleus, making highly charged ions suitable for testing QED in strong fields.
Previous QED tests using Lamb shifts or g-factors in highly charged ions were limited by experimental accuracy or field strength.

Purpose of the Study:

To perform a high-precision, high-field test of quantum electrodynamics (QED) using hydrogen-like 118Sn49+ ions.
To measure the bound-electron g factor of these ions and compare it with state-of-the-art theoretical calculations.

Main Methods:

Production of highly charged tin ions (118Sn49+) using the Heidelberg electron beam ion trap (EBIT).
Injection of ions into the ALPHATRAP Penning-trap setup for high-precision measurement of the bound-electron g factor.
Comparison of experimental g-factor measurements with theoretical QED calculations.

Main Results:

The bound-electron g factor of hydrogen-like 118Sn49+ was measured with a precision of 0.5 parts per billion (ppb).
The combined experimental and theoretical results provide a QED test accuracy of approximately 0.012% in a strong-field regime.
This measurement challenges existing stringent tests of QED and is poised to surpass them.

Conclusions:

The high-precision measurement of the g factor in highly charged tin ions offers a new benchmark for testing quantum electrodynamics in strong fields.
This work demonstrates the potential of g-factor measurements in highly charged ions to significantly advance the precision of QED tests.
Future advancements in g-factor theory are expected to further enhance the impact of these findings, potentially surpassing Lamb shift tests by an order of magnitude.