Neutron reflectometry gained impetus and widespread use in the mid-1980s, when high-power pulsed neutron sources were developed and constructed. Among them was the IBR-2 reactor, where, under the leadership of Dmitry Korneev, one of the world’s first polarized neutron spectrometers with the original Korneev spin-flipper, invented for SPN, was built shortly after the reactor started working. Later, the REFLEX polarized neutron reflectometer was built, and on the basis of SPN, a new instrument was created: REMUR, one of the best reflectometers in the world, on which methods of modern three-dimensional reflectometry were developed for studying the magnetic and structural properties of surfaces and multilayer nanomaterials. Methods for detecting a resonantly enhanced neutron wave field were proposed and developed.

The report discusses the main scientific results obtained with the help of FLNP reflectometers, which determine the prospects for the development of polarized neutron reflectometry and create the scientific basis for the new neutron source.