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    2 risultati 1
    Université de Fribourg

    Revised experimental upper limit on the electric dipole moment of the neutron

    Pendlebury, J. M. ; Afach, S. ; Ayres, N. J. ; Baker, C. A. ; Ban, G. ; Bison, Georg ; Bodek, K. ; Burghoff, M. ; Geltenbort, P. ; Green, K. ; Griffith, W. C. ; Grinten, M. van der ; Grujić, Z. D. ; Harris, P. G. ; Hélaine, V. ; Iaydjiev, P. ; Ivanov, S. N. ; Kasprzak, M. ; Kermaidic, Y. ; Kirch, K. ; Koch, H.-C. ; Komposch, S. ; Kozela, A. ; Krempel, J. ; Lauss, B. ; Lefort, T. ; Lemière, Y. ; May, D. J. R. ; Musgrave, M. ; Naviliat-Cuncic, O. ; Piegsa, F. M. ; Pignol, G. ; Prashanth, P. N. ; Quéméner, G. ; Rawlik, M. ; Rebreyend, D. ; Richardson, J. D. ; Ries, D. ; Roccia, S. ; Rozpedzik, D. ; Schnabel, A. ; Schmidt-Wellenburg, P. ; Severijns, N. ; Shiers, D. ; Thorne, J. A. ; Weis, Antoine ; Winston, O. J. ; Wursten, E. ; Zejma, J. ; Zsigmond, G.

    In: Physical Review D, 2015, vol. 92, no. 9, p. 092003

    We present for the first time a detailed and comprehensive analysis of the experimental results that set the current world sensitivity limit on the magnitude of the electric dipole moment (EDM) of the neutron. We have extended and enhanced our earlier analysis to include recent developments in the understanding of the effects of gravity in depolarizing ultracold neutrons; an improved calculation...

    Université de Fribourg

    Observation of gravitationally induced vertical striation of polarized ultracold neutrons by spin-echo spectroscopy

    Afach, S. ; Ayres, N. J. ; Ban, G. ; Bison, Georg ; Bodek, K. ; Chowdhuri, Z. ; Daum, M. ; Fertl, M. ; Franke, B. ; Griffith, W. C. ; Grujić, Z. D. ; Harris, P. G. ; Heil, W. ; Hélaine, V. ; Kasprzak, Malgorzata ; Kermaidic, Y. ; Kirch, K. ; Knowles, Paul E. ; Koch, H.-C. ; Komposch, S. ; Kozela, A. ; Krempel, J. ; Lauss, B. ; Lefort, T. ; Lemière, Y. ; Mtchedlishvili, A. ; Musgrave, M. ; Naviliat-Cuncic, O. ; Pendlebury, J. M. ; Piegsa, F. M. ; Pignol, G. ; Plonka-Spehr, C. ; Prashanth, P. N. ; Quéméner, G. ; Rawlik, M. ; Rebreyend, D. ; Ries, D. ; Roccia, S. ; Rozpedzik, D. ; Schmidt-Wellenburg, P. ; Severijns, N. ; Thorne, J. A. ; Weis, Antoine ; Wursten, E. ; Wyszynski, G. ; Zejma, J. ; Zenner, J. ; Zsigmond, G.

    In: Physical Review Letters, 2015, vol. 115, no. 16, p. 162502

    We describe a spin-echo method for ultracold neutrons (UCNs) confined in a precession chamber and exposed to a |B0|=1 μT magnetic field. We have demonstrated that the analysis of UCN spin-echo resonance signals in combination with knowledge of the ambient magnetic field provides an excellent method by which to reconstruct the energy spectrum of a confined ensemble of neutrons. The method...

    2 risultati 1