  Atomistic simulations of the experimental W L$_3$-edge extended X-ray
absorption fine structure (EXAFS) of bcc tungsten at T = 300 K were performed
using classical molecular dynamics (MD) and reverse Monte Carlo (RMC) methods.
The MD-EXAFS method based on the results of MD simulations allowed us to access
the structural information, encoded in EXAFS, beyond the first coordination
shell and to validate the accuracy of two interaction potential models - the
embedded atom model potential and the second nearest-neighbor modified embedded
atom method potential. The RMC-EXAFS method was used for more elaborate
analysis of the EXAFS data giving access to thermal disorder effects. The
results of both methods suggest that the correlation in atomic motion in bcc
tungsten becomes negligible above 8 {\AA}. This fact allowed us to use the
EXAFS data to determine not only mean-square relative displacements of atomic
W-W pair motion but also mean-square displacements of individual tungsten
atoms, which are usually accessible from diffraction data only.
