activity
19982019
most citedHigh-precision calculations of dispersion coefficients, static dipole polarizabilities, and atom-wall interaction constants for alkali-metal atoms

365 citations · 2k across the 45 of their papers we have counts for

collaborators

45 papers

physics.chem-ph2019★ 42 cited

Equation of state of warm-dense boron nitride combining computation, modeling, and experiment

Shuai Zhang, Amy Lazicki, Burkhard Militzer +18

The equation of state (EOS) of materials at warm dense conditions poses significant challenges to both theory and experiment. We report a combined computational, modeling, and expe…

physics.plasm-ph2018★ 2 cited

Opacity of Shock-Heated Boron Plasmas

W. R. Johnson, J. Nilsen

Standard measures of opacity, the imaginary part of the atomic scattering factor and the x-ray mass attenuation coefficient , are evaluated in shock-heated boron, boron…

astro-ph.SR2017★ 2 cited

X-ray line coincidence photopumping in a solar flare

F. P. Keenan, K. Poppenhaeger, M. Mathioudakis +6

Line coincidence photopumping is a process where the electrons of an atomic or molecular species are radiatively excited through the absorption of line emission from another specie…

physics.atom-ph2016★ 24 cited

Forbidden M1 and E2 transitions in monovalent atoms and ions

U. I. Safronova, M. S. Safronova, W. R. Johnson

We carried out a systematic high-precision relativistic study of the forbidden magnetic-dipole and electric-quadrupole transitions in Ca+, Rb, Sr+, Cs, Ba+, Fr, Ra+, Ac2+, and Th3+…

physics.atom-ph2016★ 2 cited

Relativistic many-body calculation of energies, lifetimes, polarizabilities, blackbody radiative shift and hyperfine constants in Lu2+

U. I. Safronova, M. S. Safronova, W. R. Johnson

Energy levels of 30 low-lying states of Lu2+ and allowed electric-dipole matrix elements between these states are evaluated using a relativistic all-order method in which all singl…

physics.plasm-ph2013★ 1 cited

X-ray Thomson scattering for partially ionized plasmas including the effect of bound levels

J. Nilsen, W. R. Johnson, K. T. Cheng

X-ray Thomson scattering is being developed as a method to measure the temperature, electron density, and ionization state of high energy density plasmas such as those used in iner…