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Search for low-energy upscattering of ultracold neutrons from a beryllium surface

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Abstract

We present results of a search for anomalous low-energy upscattering of ultracold neutrons from a beryllium surface. This upscattering is considered one for the possible reasons for UCN “disappearance” from very cold beryllium bottles, as observed in experiments. The indium foil activation method was used to measure a very low intensity flux of upscattered UCN. The (15–300) m/s velocity range of upscattered UCN is ruled out by these measurements at a confidence level of 90%.

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Authors and Affiliations

  1. Joint Institute for Nuclear Research, 141980, Dubno, Moscow Region, Russia

    Al. Yu. Muzychka & Yu. N. Pokotilovski

  2. Institut Laue-Langevin, Grenoble, France

    P. Geltenbort

Authors
  1. Al. Yu. Muzychka
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  2. Yu. N. Pokotilovski
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  3. P. Geltenbort
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Additional information

Zh. Éksp. Teor. Fiz. 115, 141–148 (January 1999)

Published in English in the original Russian journal. Reproduced here with stylistic changes by the Translation Editor.

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Muzychka, A.Y., Pokotilovski, Y.N. & Geltenbort, P. Search for low-energy upscattering of ultracold neutrons from a beryllium surface. J. Exp. Theor. Phys. 88, 79–83 (1999). https://doi.org/10.1134/1.558767

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  • DOI: https://doi.org/10.1134/1.558767

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