Ganapol, Barry D.López Pouso, Óscar2024-12-302024-12-302023-06-01Ganapol, & López Pouso, Ó. (2023). Response Matrix/Discrete Ordinates Solution of the 1D Fokker-Planck Equation. Nuclear Science and Engineering, 197(9), 2327-2342. https://doi.org/10.1080/00295639.2023.21942281943-748Xhttps://hdl.handle.net/10347/38304This is an Accepted Manuscript of an article published by Taylor & Francis in Nuclear Science and Engineering on 1 Jun 2023, available at: https://doi.org/10.1080/00295639.2023.2194228The Fokker-Planck equation (FPE) is one of the quintessential equations of particle transport theory. Representing small angle scattering characteristics of electron and photon transport by differential scattering indeed is a mathematical/numerical challenge. Here, we address the challenge with the method of response matrix applied to the Sn approximation to arrive at a nearly six-place-precision benchmark. Our approach aligns with the response matrix solution of the radiative transfer equation for anisotropic scattering published previously. We conclude with the comparison of the response matrix benchmark to a classical finite difference approximation.engAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Fokker-Planck equationResponse matrixMatrix exponentialjournal article10.1080/00295639.2023.2194228open access