FELIX-1.0: A finite element solver for the time dependent generator coordinate method with the Gaussian overlap approximation

TL;DR

FELIX-1.0 is a C++ software package that numerically solves the time-dependent generator coordinate method equations under the Gaussian overlap approximation, enabling advanced simulations of nuclear fission dynamics.

Contribution

The paper introduces FELIX-1.0, a novel finite element solver for TDGCM with Gaussian overlap approximation, including implementation details and benchmark tests.

Findings

Successfully tested with benchmark calculations

Demonstrated capability to simulate realistic fission dynamics

Provides a flexible, multi-dimensional solver for nuclear physics applications

Abstract

We describe the software package FELIX that solves the equations of the time-dependent generator coordinate method (TDGCM) in N-dimensions (N $\geq$ 1) under the Gaussian overlap approximation. The numerical resolution is based on the Galerkin finite element discretization of the collective space and the Crank-Nicolson scheme for time integration. The TDGCM solver is implemented entirely in C++. Several additional tools written in C++, Python or bash scripting language are also included for convenience. In this paper, the solver is tested with a series of benchmarks calculations. We also demonstrate the ability of our code to handle a realistic calculation of fission dynamics.