252 citations · 1.6k across the 35 of their papers we have counts for
8 papers · 1 filter
Frequency shifts in gravitational resonance spectroscopy
S. Baeßler, V. V. Nesvizhevsky, G. Pignol +4
Quantum states of ultracold neutrons in the gravitational field are to be characterized through gravitational resonance spectroscopy. This paper discusses systematic effects that a…
Transitions between levels of a quantum bouncer induced by a noise-like perturbation
C. Codau, V. V. Nesvizhevsky, M. Fertl +2
The probability of transition between levels of a quantum bouncer, induced by a noise-like perturbation, is calculated. The results are applied to two sources of noise (vibrations…
Quasi-specular albedo of cold neutrons from powder of nanoparticles
R. Cubitt, E. V. Lychagin, A. Yu. Muzychka +5
We predicted and observed for the first time the quasi-specular albedo of cold neutrons at small incidence angles from a powder of nanoparticles. This albedo (reflection) is due to…
Constraints on spin-dependent short-range interactions using gravitational quantum levels of ultracold neutrons
S. Baeßler, V. V. Nesvizhevsky, G. Pignol +2
In this paper, we discuss a possibility to improve constraints on spin-dependent short-range interactions in the range of 1 - 200 micrometer significantly. For such interactions, o…
Storage of very cold neutrons in a trap with nano-structured walls
E. V. Lychagin, A. Yu. Muzychka, V. V. Nesvizhevsky +3
We report on storage of Very Cold Neutrons (VCN) in a trap with walls containing powder of diamond nanoparticles. The efficient VCN reflection is provided by multiple diffusive ela…
Ultracold-neutron infrastructure for the gravitational spectrometer GRANIT
P. Schmidt-Wellenburg, K. H. Andersen, P. Courtois +8
The gravitational spectrometer GRANIT will be set up at the Institut Laue Langevin. It will profit from the high ultracold neutron density produced by a dedicated source. A monochr…