nMoldyn: a program package for a neutron scattering oriented analysis of molecular dynamics simulations.

Area of Science:

• Computational physics
• Materials science
• Chemical physics

Background:

• Molecular Dynamics (MD) simulations generate large datasets.
• Analyzing MD trajectories for neutron scattering requires specialized tools.
• Existing tools may lack flexibility or modern features.

Purpose of the Study:

• To present a new, enhanced implementation of the nMoldyn program.
• To extend the computational capabilities for analyzing MD trajectories.
• To provide a more versatile and user-friendly tool for neutron scattering analysis.

Main Methods:

• Re-implementation of nMoldyn using Python and object-oriented programming.
• Development of both graphical/interactive and batch user interfaces.
• Integration of advanced analysis modules for neutron scattering.

Main Results:

• Expanded calculation capabilities, including mean-square displacement and various autocorrelation functions.
• Implementation of neutron scattering specific functions like coherent and incoherent intermediate scattering functions.
• Introduction of memory function calculations for deeper theoretical insights.

Conclusions:

• The new nMoldyn implementation offers a powerful and flexible platform for MD data analysis.
• Enhanced features facilitate the connection between simulation results and theoretical studies.
• The program serves as a valuable toolset for researchers in condensed matter physics and chemistry.