Neutron reflectometry with registration of secondary radiation

TL;DR

This paper presents a neutron reflectometry method that incorporates simultaneous registration of secondary radiation to better measure the neutron interaction potential within media, enhancing analysis accuracy.

Contribution

It introduces a new approach and developed channels for registering secondary radiation during neutron reflectometry experiments.

Findings

Successfully developed channels for secondary radiation registration

Validated the method on the REMUR spectrometer at IBR-2

Demonstrated improved measurement capabilities

Abstract

Neutron reflectometry is a method for measuring the spatial profile of the neutron interaction potential with the medium. The interaction potential is the sum of neutron interaction potentials with separate isotopes of the medium. To determine the neutron interaction potential with the structure units, secondary radiation is simultaneously registered with neutrons. Channels for registering secondary radiation of charged particles, gamma rays and neutrons, having experienced spin flip, have been developed on the REMUR spectrometer of the IBR-2 reactor in Dubna (Russia). The necessity of registering secondary radiation in neutron reflectometry is justified, a method developed for measuring secondary radiation is described and the results of testing channels for registering secondary radiation on the REMUR spectrometer are presented in the paper.