Abstract
The probability of subbarrier penetration of ultracold neutrons through 15 μm-thick vacuum-tight beryllium foil (boundary energy for beryllium is E lim Be=249 eV) was measured. It is equal to (−1.2±1.0) × 10−8 per collision of neutrons with energy lower than ∼160 neV.
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Translated from Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 71, No. 11, 2000, pp. 657–662.
Original Russian Text Copyright © 2000 by Lychagin, Muzychka, Nesvizhevsky, Nekhaev, Strelkov.
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Lychagin, E.V., Muzychka, A.Y., Nesvizhevsky, V.V. et al. Experimental estimation of the possible subbarrier penetration of ultracold neutrons through vacuum-tight foils. Jetp Lett. 71, 447–450 (2000). https://doi.org/10.1134/1.1307989
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DOI: https://doi.org/10.1134/1.1307989