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Your search keyword '"E.V. Lychagin"' showing total 3 results
Start Over Author "E.V. Lychagin" Topic 010306 general physics
3 results on '"E.V. Lychagin"'

3. Coherent scattering of slow neutrons at nanoparticles in particle physics experiments

Author

G. V. Nekhaev, Valery Nesvizhevsky, Guillaume Pignol, A. V. Strelkov, E.V. Lychagin, A. Yu. Muzychka, K.V. Protasov, Institut Laue-Langevin (ILL), ILL, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), T. Soldner, V. Nesvizhevsky, C. Plonka-Spehr, K. Protasov, K. Schreckenbach, and O. Zimmer

Subjects
Condensed Matter::Quantum Gases, Physics, Nuclear and High Energy Physics, Range (particle radiation), 010308 nuclear & particles physics, Scattering, Physics::Optics, Nanoparticle, Neutron scattering, 01 natural sciences, 7. Clean energy, Wall material, Wavelength, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], 0103 physical sciences, Neutron, Physics::Atomic Physics, Particle physics experiments, Atomic physics, Nuclear Experiment, 010306 general physics, Instrumentation, ComputingMilieux_MISCELLANEOUS
Abstract

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 neutrons are coherently scattered by nanoparticles, providing a powerful tool, in particular for VCN reflectors, for VCN storage in closed traps, probably for ‘quasi-specular’ reflectors for cold neutrons, and for cooling VCN to the UCN energy range. On the other hand, quasi-elastic scattering of UCN at nanoparticles and large molecules (as those of Fomblin oil) in all presently used UCN trap wall materials causes false effects in the neutron lifetime measurements because of poorly controlled spectrum evolution.

Published
2009
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