50 citations · 156 across the 10 of their papers we have counts for
10 papers
Simplified partial wave expansion of the Lamb shift
J. Sapirstein, K. T. Cheng
A method for calculating the self energy part of the Lamb shift is revisited. When the electron propagator in an external field is represented as an expansion in partial waves, the…
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…
Resonant Bound-Free Contributions to Thomson Scattering of X-rays by Warm Dense Matter
W. R. Johnson, J. Nilsen, K. T. Cheng
Recent calculations [Nilsen et al. arXiv:1212.5972] predict that contributions to the scattered photon spectrum from 3s and 3p bound states in chromium (Z=24) at metallic density a…
The effect of bound states on X-ray Thomson scattering for partially ionized plasmas
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…
Average-Atom Model for X-ray Scattering from Warm Dense Matter
W. R. Johnson, J. Nilsen, K. T. Cheng
A scheme for analyzing Thomson scattering of x-rays by warm dense matter, based on the average-atom model, is developed. Emphasis is given to x-ray scattering by bound electrons. C…
Using the X-FEL to understand X-ray Thomson scattering for partially ionized plasmas
J. Nilsen, W. R. Johnson, K. T. Cheng
For the last decade numerous researchers have been trying to develop experimental techniques to use X-ray Thomson scattering as a method to measure the temperature, electron densit…