2017/01/25 by Wlokka, S., Fierlinger, P., Frei, A. +6
#FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Nuclear Experiment (nucl-ex)
paper · doi:10.48550/arxiv.1701.07431
We have investigated the diffuse reflection probabilities of Replica guides for ultra-cold neutrons (UCN) using the so-called helium method. For the first time we could establish a consistent description of the diffuse reflection mechanism for different lengths of the guide system. The transmission of the guides is measured depending on the helium pressure inside of the guides. A series of simulations was done to reproduce the experimental data. These simulations showed that a diffuse reflection probability of d = (3.0 ± 0.5) ⋅ 10-2 sufficiently describes the experimental data.