154 citations · 2k across the 52 of their papers we have counts for
48 papers
Precision calculations of the hyperfine constants and isotope and isomer shifts in low-lying states of 229Th3+
S. G. Porsev, M. S. Safronova
We present high-precision calculations of the hyperfine constants, isotope shift, and isomer shift in low-lying states of Th3+ relevant to spectroscopy of the 229Th nuclear isomer.…
Finding the ultra-narrow electric quadrupole transition in Ni ion for an optical clock
Charles Cheung, Sergey G. Porsev, Dmytro Filin +7
The Ni ion features an electronic transition with a natural width of only 8 mHz, allowing for a highly stable optical clock. We predict that the energy of this strongly for…
pCI: a parallel configuration interaction software package for high-precision atomic structure calculations
Charles Cheung, Mikhail G. Kozlov, Sergey G. Porsev +3
We introduce the pCI software package for high-precision atomic structure calculations. The standard method of calculation is based on the configuration interaction (CI) method to…
Lattice Light Shift Evaluations In a Dual-Ensemble Yb Optical Lattice Clock
Tobias Bothwell, Benjamin D. Hunt, Jacob L. Siegel +9
In state-of-the-art optical lattice clocks, beyond-electric-dipole polarizability terms lead to a break-down of magic wavelength trapping. In this Letter, we report a novel approac…
A neural network approach to running high-precision atomic computations
Pavlo Bilous, Charles Cheung, Marianna Safronova
Modern applications of atomic physics, including the determination of frequency standards, and the analysis of astrophysical spectra, require prediction of atomic properties with e…
Natural-linewidth measurements of the 3C and 3D soft-x-ray transitions in Ni XIX
Chintan Shah, Steffen Kühn, Sonja Bernitt +15
We used the monochromatic soft-x-ray beamline P04 at the synchrotron-radiation facility PETRA III to resonantly excite the strongest transitions in neon-like Ni XIX ions, $…