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    Université de Fribourg

    Losses and depolarization of ultracold neutrons on neutron guide and storage materials

    Bondar, V. ; Chesnevskaya, S. ; Daum, M. ; Franke, B. ; Geltenbort, P. ; Göltl, L. ; Gutsmiedl, E. ; Karch, J. ; Kasprzak, Malgorzata ; Kessler, G. ; Kirch, K. ; Koch, Hans-Christian ; Kraft, Andreas ; Lauer, Thorsten ; Lauss, B. ; Pierre, E. ; Pignol, G. ; Reggiani, D. ; Schmidt-Wellenburg, P. ; Sobolev, Yuri ; Zechlau, T. ; Zsigmond, G.

    In: Physical Review C, 2017, vol. 96, no. 3, p. 035205

    At Institut Laue-Langevin (ILL) and Paul Scherrer Institute (PSI), we have measured the losses and depolarization probabilities of ultracold neutrons on various materials: (i) nickel-molybdenum alloys with weight percentages of 82/18, 85/15, 88/12, 91/9, and 94/6 and natural nickel Ni100, (ii) nickel-vanadium NiV93/7, (iii) copper, and (iv) deuterated polystyrene (dPS). For the different...

    Université de Fribourg

    Development of a 3He magnetometer for a neutron electric dipole moment experiment

    Kraft, Andreas ; Koch, Hans-Christian ; Daum, Manfred ; Heil, Werner ; Lauer, Thorsten ; Neumann, Daniel ; Pazgalev, Anatoly ; Sobolev, Yuri ; Weis, Antoine

    In: EPJ Techniques and Instrumentation, 2014, vol. 1, no. 1, p. 8

    We have developed a highly sensitive 3He magnetometer for the accurate measurement of the magnetic field in an experiment searching for an electric dipole moment of the neutron. By measuring the Larmor frequency of nuclear spin polarized 3He atoms a sensitivity on the femto-Tesla scale can be achieved. A 3He/Cs-test facility was established at the Institute of Physics of the Johannes Gutenberg...

    2 results 1