3 papers
physics.ins-det2024
Loss rate of ultracold neutrons due to the absorption by trap walls in large material traps
Pavel D. Grigoriev, Vladislav D. Kochev, Victor A. Tsyplukhin +2
The most accurate neutron lifetime measurements now use the material or magnetic traps of ultracold neutrons (UCN). The precision of these experiments is determined by the accuracy…
physics.ins-det2024
A method for measuring deviation from Lambert diffuse scattering law of ultracold neutrons on material walls
P. D. Grigoriev, V. D. Kochev, V. A. Tsyplukhin +2
Modeling the motion of ultracold neutrons (UCNs) is crucial for assessing their losses, accurately measuring their lifetime, and describing other experiments. In material traps, it…
physics.ins-det2024
Numerical Calculation of Electric Field Enhancement in Neutron Traps with Rough Walls Coated with Superfluid Helium
V. D. Kochev, T. I. Mogilyuk, S. S. Kostenko +1
A film of liquid helium on the surface of material traps for ultracold neutrons protects the neutrons from being absorbed by the trap walls. By using surface roughness and an elect…