We present estimations of systematic corrections and results of their experimental studies for
our neutron lifetime experiment carried out in 2008–2010 at ILL. Taking into account these …

Two related physical phenomena have recently been observed: quantum states of ultracold
neutrons (UCN) in the gravitational field above a flat mirror, and quantum states of cold …

Two hypotheses concerning the interaction of neutrons with nanoparticles and having
applications in the physics of ultracold neutrons (UCN) are considered. In 1997, it was found …

Gravitationally bound quantum states of matter were observed for the first time thanks to the
unique properties of ultra-cold neutrons (UCN). The neutrons were allowed to fall towards a …

Diamond, with its exceptionally high optical nuclear potential and low absorption cross-
section, is a unique material for a series of applications in VCN (very cold neutron) physics …

Presently, the most accurate values of the free neutron beta-decay lifetime result from
measurements using fluid-coated ultacold neutron (UCN) storage bottles. The purpose of …

The existence of quantum states of matter in a gravitational field was demonstrated recently
in the Institut Laue–Langevin (ILL), Grenoble, in a series of experiments with ultra cold …

Usually Ultra Cold Neutrons (UCN) and Very Cold Neutrons (VCN) are not efficiently
scattered by individual atoms in matter due to their large wavelength. On the contrary, such …

Ultracold and very cold neutrons (UCN and VCN) interact strongly with nanoparticles due to
the similarity of their wavelengths and nanoparticles sizes. We analyze the hypothesis that …

The approach we have proposed earlier for a large increase in ultracold neutron density
was based on equilibrium thermalization of cold neutrons during their diffusive motion in a …