neutron absorption in supermirror coatings effects on shielding

• DOI: 10.48550/arxiv.1708.04486
• Publication Date: 2019-04-01
• Authors: Kolevatov, Rodion; Schanzer, Christian; Böni, Peter
• Keywords: Physics - Instrumentation and Detectors; 0103 physical sciences; FOS: Physical sciences; Instrumentation and Detectors (physics.ins-det); 01 natural sciences

The quantification of the dose rate and the composition of the dose in the vicinity of supermirror coated guides is essential for designing shielding for beamlines transporting neutrons with a high flux. We present results on a calculation of radiative neutron absorption in Ni/Ti and NiMo/Ti supermirror coatings which leads to the emission of high energy gamma rays. A simple parameterization of the absorption probability in the coating materials per incident neutron is given as a function of momentum transfer at reflection.