Quasielastic scattering of ultracold neutrons as possible reason for their energy spreading during long storage in closed traps
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980
Dubna, Moscow region, Russia
Published online: 15 March 1999
It is shown that quasielastic scattering of ultracold neutrons due to diffusive motion of scatterers at the surface of liquid polymer (fomblin) or adsorbed hydrogenous contaminations of the surface of neutron traps may be possible reason of their energy spreading during long storage time in closed traps, which was observed in the recent experiments.
PACS: 61.12.-q – Neutron diffraction and scattering / 61.12.Ex – Neutron scattering techniques (including small-angle scattering) / 61.25.Hq – Macromolecular and polymer solutions; polymer melts; swelling / 66.10.Cb – Diffusion and thermal diffusion
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1999