Wavelength-dispersive spectroscopy in the hard x-ray regime of a heavy highly-charged ion: The 1s Lamb shift in hydrogen-like gold

Abstract

Accurate spectroscopy of highly charged high-Z ions in a storage ring is demonstrated to be feasible by the use of specially adapted crystal optics. The method has been applied for the measurement of the 1s Lamb shift in hydrogen-like gold (Au 78+) in a storage ring through spectroscopy of the Lyman x rays. This measurement represents the first result obtained for a high-Z element using high-resolution wavelength-dispersive spectroscopy in the hard x-ray regime, paving the way for sensitivity to higher-order QED effects.

References in corpus (8)

• Improved Measurement of the Hydrogen 1S - 2S Transition Frequency
• Precision physics of simple atoms: QED tests, nuclear structure and fundamental constants
• Frequency metrology of helium around 1083 nm and determination of the nuclear charge radius
• X-ray resonant photoexcitation: line widths and energies of Kα transitions in highly charged Fe ions
• Observation of the hyperfine transition in lithium-like Bismuth ${}^{209}{\text{Bi}}^{80+}$: Towards a test of QED in strong magnetic fields
• Observation of the 2p3/2 -> 2s1/2 intra-shell transition in He-like uranium
• High-precision spectroscopy of the forbidden 2 3S1 - 2 1P1 transition in quantum degenerate metastable helium
• Precise determination of the 1s Lamb Shift in hydrogen-like lead and gold ions using microcalorimeters

Cited by in corpus (13)

• QED tests with highly-charged ions
• Heavy-Ion Storage Rings and Their Use in Precision Experiments with Highly Charged Ions
• Testing Quantum Electrodynamics with Exotic Atoms
• QED radiative corrections to the ${}^2$P${}_{1/2}$-${}^2$P${}_{3/2}$ fine-structure in fluorinelike ions
• Integration of maXs-type microcalorimeter detectors for high-resolution x-ray spectroscopy into the experimental environment at the CRYRING@ESR electron cooler
• Two-loop electron self-energy with accelerated partial-wave expansion
• Quantum Electrodynamics in Strong Electromagnetic Fields: Substate Resolved K$\alpha$ Transition Energies in Helium-like Uranium
• One-loop electron self-energy with accelerated partial-wave expansion in Coulomb gauge
• Storage, Accumulation and Deceleration of Secondary Beams for Nuclear Astrophysics
• A high-resolution asymmetric von Hamos spectrometer for low-energy X-ray spectroscopy at the CRYRING@ESR electron cooler
• QED approach to valence-hole excitation in closed shell systems
• Relativistic Maxwell-Bloch Equations with Applications to Astrophysics
• Insight into the prospective evaluation of third-order interelectronic corrections on Li-like ions