https://doi.org/10.1051/epjap/2009001
A study of the ultra-cold neutron up-scattering at reflection from solid surface
1
Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
2
Mordovian State University, 430000 Saransk, Russia
3
Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France
Corresponding author: pokot@nf.jinr.ru
Received:
25
October
2007
Revised:
15
January
2008
Accepted:
23
November
2008
Published online:
31
January
2009
We describe a method and present the results of the measurements of spectral change of stored ultra-cold neutrons and the sub-barrier neutron up-scattering from solid surfaces to the energy range higher than the boundary energy of the sample. The method consists in measuring the neutron absorption curves as a function of UCN storage time and the thickness of the absorbers. The quasi-elastic and inelastic UCN up-scattering probability is determined at room temperature. The neutron spectra are inferred in monochromatic and more detailed approximations.
PACS: 28.20.Cz – Neutron scattering / 29.30.Hs – Neutron spectroscopy / 61.12.-q – Neutron diffraction and scattering
© EDP Sciences, 2009
