Eur. Phys. J. Appl. Phys.
Volume 45, Number 2, February 2009
|Number of page(s)||8|
|Section||Instrumentation and Metrology|
|Published online||31 January 2009|
A study of the ultra-cold neutron up-scattering at reflection from solid surface
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: email@example.com
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
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