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UCN production in superfluid helium

  • W. Schott
  • J.M. Pendlebury
  • I. Altarev
  • S. Gröger
  • E. Gutsmiedl
  • F.J. Hartmann
  • S. Paul
  • G. Petzoldt
  • P. Schmidt-Wellenburg
  • U. Trinks

Abstract:

Ultra-cold neutrons (UCN) are produced in superfluid helium by single- and multi-phonon excitation. The UCN production rate density RII via multiphonons can be larger than that by one-phonon excitation RI being due to the dependence of the incident neutron spectral flux density dφ/dλ on the wavelength λ.

PACS. 78.70.Nx Neutron inelastic scattering – 67.20.+k Quantum effects on the structure and dynamics of nondegenerate fluids (e.g., normal phase liquid 4He) – 61.12.Ex Neutron scattering techniques (including small-angle scattering) – 29.25.Dz Neutron sources 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2003

Authors and Affiliations

  • W. Schott
    • 1
  • J.M. Pendlebury
    • 2
  • I. Altarev
    • 1
  • S. Gröger
    • 1
  • E. Gutsmiedl
    • 1
  • F.J. Hartmann
    • 1
  • S. Paul
    • 1
  • G. Petzoldt
    • 1
  • P. Schmidt-Wellenburg
    • 1
  • U. Trinks
    • 1
  1. 1.Physik-Department E18, TU- München, D-85747 Garching, GermanyDE
  2. 2.School of Chemistry, Physics and Environmental Science, University of Sussex, Brighton, Sussex, BNI 9QJ, UKGB

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