International Conference on Precision Physics and Fundamental Physical Constants FFK2023

Session

Wednesday 1

24 May 2023, 09:00

Conveners

Wednesday 1: Helium ion

• Thomas Udem

42. First Observation of the He+ 1S-2S Transition in an Atomic Beam

Prof. Kjeld Eikema (Vrije Universiteit Amsterdam)

24/05/2023, 09:00

precision measurements in fundamental physics, astrophysics and cosmology

Invited Talk

Abstract provided as attached pdf-file

20. Towards High-Precision Spectroscopy of the 1S–2S Transition in He+

Dr Akira Ozawa (Max-Planck-Institute of Quantum Optics)

24/05/2023, 09:45

precision measurements in fundamental physics, astrophysics and cosmology

Oral presentation

The energy levels of hydrogen-like atoms and ions are accurately described by bound-state quantum electrodynamics (QED). The frequency of the narrow 1s-2s transition of atomic hydrogen has been measured with a relative uncertainty of less than $10^{-14}$. In combination with other spectroscopic measurements of hydrogen and hydrogen-like atoms, the Rydberg constant and the proton charge radius...

47. High-precision hyperfine structure measurements on hydrogen-like 3He and 9Be

Stefan Dickopf

24/05/2023, 10:10

precision measurements in fundamental physics, astrophysics and cosmology

Oral presentation

62. Theory of the magnetic moments and hyperfine splitting of $^3$He$^+$

Bastian Sikora

24/05/2023, 10:35

quantum electrodynamics of bound systems

Oral presentation

abstract provided as attached pdf-file