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Neutron lifetime and density of states of fluoropolymers at low temperatures

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Abstract

Present status of the measurements of the neutron lifetime is shortly reviewed. We report the inelastic neutron scattering measurement of the density of vibrational states G(ω) of two fluoropolymers, which are promising coating materials for the storage of ultracold neutrons (UCNs) in closed volumes covered with polymer film. From determined G(ω), we calculate the expected UCN loss coefficients.

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Authors and Affiliations

  1. Joint Institute for Nuclear Research, Dubna, Moscow region, 141980, Russia

    E. A. Goremychkin & Yu. N. Pokotilovski

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  1. E. A. Goremychkin
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Correspondence to Yu. N. Pokotilovski.

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Goremychkin, E.A., Pokotilovski, Y.N. Neutron lifetime and density of states of fluoropolymers at low temperatures. Jetp Lett. 105, 548–551 (2017). https://doi.org/10.1134/S0021364017080045

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