66 citations · 150 across the 10 of their papers we have counts for
10 papers
Enhanced One-Color-Two-Photon Resonant Ionization in Highly Charged Ions by Fine-Structure Effects
Moto Togawa, Chunhai Lyu, Chintan Shah +25
Ultraintense pulses from X-ray free-electron lasers can drive, within femtoseconds, multiple processes in the inner shells of atoms and molecules in all phases of matter. The ensui…
Periodic table for highly charged ions
Chunhai Lyu, Christoph H. Keitel, Zoltán Harman
Mendeleev's periodic table successfully groups atomic elements according to their chemical and spectroscopic properties. However, it becomes less sufficient in describing the elect…
Probing new bosons and nuclear structure with ytterbium isotope shifts
Menno Door, Chih-Han Yeh, Matthias Heinz +24
In this Letter, we present mass-ratio measurements on highly charged Yb ions with a precision of and isotope-shift measurements on Yb on the …
Atomic mass determination of uranium-238
Kathrin Kromer, Chunhai Lyu, Jacek Bieroń +10
The atomic mass of uranium-238 has been determined to be , improving the literature uncertainty by two orders of magnitude. It is obtained from a m…
Observation of a low-lying metastable electronic state in highly charged lead by Penning-trap mass spectrometry
Kathrin Kromer, Chunhai Lyu, Menno Door +10
Highly charged ions (HCIs) offer many opportunities for next-generation clock research due to the vast landscape of available electronic transitions in different charge states. The…
Stringent test of QED with hydrogenlike tin
J. Morgner, B. Tu, C. M. König +11
Inner-shell electrons naturally sense the electric field close to the nucleus, which can reach extreme values beyond for the innermost electrons. Espe…
Ultrastable optical, XUV and soft-x-ray clock transitions in open-shell highly charged ions
Chunhai Lyu, Christoph H. Keitel, Zoltán Harman
Highly charged ions (HCIs) are insensitive to external perturbations and are attractive for the development of ultrastable clocks. However, only a few HCI candidates are known to p…
High-precision mass measurement of doubly magic Pb
Kathrin Kromer, Chunhai Lyu, Menno Door +10
The absolute atomic mass of Pb has been determined with a fractional uncertainty of by measuring the cyclotron-frequency ratio of Pb…
Interrogating the temporal coherence of EUV frequency combs with highly charged ions
Chunhai Lyu, Stefano M. Cavaletto, Christoph H. Keitel +1
A scheme to infer the temporal coherence of EUV frequency combs generated from intra-cavity high-order harmonic generation is put forward. The excitation dynamics of highly charged…
Narrow-band hard-x-ray lasing
Chunhai Lyu, Stefano M. Cavaletto, Christoph H. Keitel +1
Since the advent of x-ray free-electron lasers (XFELs), considerable efforts have been devoted to achieve x-ray pulses with better temporal coherence. Here, we put forward a scheme…