2.8k citations · 2.9k across the 4 of their papers we have counts for
4 papers
Laser powder-bed fusion additive manufacturing: physics of complex melt flow and formation mechanisms of pores, spatter and denudation zones
Saad A. Khairallah, Andrew T. Anderson, Alexander Rubenchik +1
This study demonstrates the significant effect of the recoil pressure and Marangoni convection in laser powder bed fusion (L-PBF) of 316L stainless steel. A three-dimensional high…
Path Integral Calculations of the Hydrogen Hugoniot Using Augmented Nodes
Saad A. Khairallah, J. Shumway, Erik W. Draeger
We calculate the hydrogen Hugoniot using ab initio path integral Monte Carlo. We introduce an efficient finite-temperature fixed-node approximation for handling fermions, which inc…
Theory of Small Para-Hydrogen Clusters: Magic Numbers and Superfluid Sizes
S. A. Khairallah, M. B. Sevryuk, D. M. Ceperley +1
The interplay between magic number stabilities and superfluidity of small para-hydrogen clusters with sizes to 40 and temperatures K is explored wit…
Superfluidity of Dense He in Vycor
Saad A. Khairallah, D. M. Ceperley
We calculate properties of a model of He in Vycor using the Path Integral Monte Carlo method. We find that He forms a distinct layered structure with a highly localized fir…