Polarized Reflectivity: Gepore Validation

We will use the gepore.f program (Fortran77), as published in the PNR book chapter by Majkrzak et al. [1] to validate the results of the Refl1D magnetic calculation kernel.

For models expected Zeeman corrections (with large applied field H and non-zero in-plane component of M perpendicular to H), we will use the version gepore_zeeman.f which was created during the preparation of an article on PNR in large magnetic fields in the Journal of Applied Crystallography [2]

• Validation of the Zeeman effect with gepore_zeeman.f (field out of plane)
• Validation of Spin-Flip scattering with gepore.f (field in-plane)
• Validation of non-Spin-Flip scattering with gepore.f

[1]

Majkrzak, C. F., K. V. O’Donovan, and N. F. Berk. “Polarized neutron reflectometry.” Neutron Scattering from Magnetic Materials. Elsevier Science, 2006. 397-471. https://doi.org/10.1016/B978-044451050-1/50010-0

[2]

Maranville, B. B., Kirby, B. J., Grutter, A. J., Kienzle, P. A., Majkrzak, C. F., Liu, Y., and Dennis, C. L. “Measurement and modeling of polarized specular neutron reflectivity in large magnetic fields.” Journal of Applied Crystallography 49.4 (2016): 1121-1129. https://doi.org/10.1107/S1600576716007135