Journal article

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

  • Afach, S. Paul Scherrer Institut, Villigen PSI, Switzerland - ETH Zürich, Institute for Particle Physics, Zürich, Switzerland - Hans Berger Department of Neurology, Jena University Hospital, Jena, Germany
  • Ayres, N. J. Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, United Kingdom
  • Ban, G. LPC Caen, ENSICAEN, Université de Caen, Caen, France
  • Bison, Georg Paul Scherrer Institut, Villigen PSI, Switzerland
  • Bodek, K. Marian Smoluchowski Institute of Physics, Jagiellonian University, Cracow, Poland
  • Chowdhuri, Z. Paul Scherrer Institut, Villigen PSI, Switzerland
  • Daum, M. Paul Scherrer Institut, Villigen PSI, Switzerland
  • Fertl, M. Paul Scherrer Institut, Villigen PSI, Switzerland - ETH Zürich, Institute for Particle Physics, Zürich, Switzerland
  • Franke, B. Paul Scherrer Institut, Villigen PSI, Switzerland - ETH Zürich, Institute for Particle Physics, Zürich, Switzerland
  • Griffith, W. C. Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, United Kingdom
  • Grujić, Z. D. Physics Department, University of Fribourg, Switzerland
  • Harris, P. G. Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, United Kingdom
  • Heil, W. Institut für Physik, Johannes-Gutenberg-Universität, Mainz, Germany
  • Hélaine, V. Paul Scherrer Institut, Villigen PSI, Switzerland - LPC Caen, ENSICAEN, Université de Caen, Caen, France
  • Kasprzak, Malgorzata Physics Department, University of Fribourg, Switzerland
  • Kermaidic, Y. LPSC, Université Grenoble Alpes, Grenoble, France
  • Kirch, K. Paul Scherrer Institut, Villigen PSI, Switzerland - ETH Zürich, Institute for Particle Physics, Zürich, Switzerland
  • Knowles, Paul E. Physics Department, University of Fribourg, Switzerland
  • Koch, H.-C. Physics Department, University of Fribourg, Switzerland - Institut für Physik, Johannes-Gutenberg-Universität, Mainz, Germany
  • Komposch, S. Paul Scherrer Institut, Villigen PSI, Switzerland - ETH Zürich, Institute for Particle Physics, Zürich, Switzerland
  • Kozela, A. Henryk Niedwodniczanski Institute for Nuclear Physics, Cracow, Poland
  • Krempel, J. ETH Zürich, Institute for Particle Physics, Zürich, Switzerland
  • Lauss, B. Paul Scherrer Institut, Villigen PSI, Switzerland
  • Lefort, T. LPC Caen, ENSICAEN, Université de Caen, Caen, France
  • Lemière, Y. LPC Caen, ENSICAEN, Université de Caen, Caen, France
  • Mtchedlishvili, A. Paul Scherrer Institut, Villigen PSI, Switzerland
  • Musgrave, M. Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, United Kingdom
  • Naviliat-Cuncic, O. LPC Caen, ENSICAEN, Université de Caen, Caen, France
  • Pendlebury, J. M. Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, United Kingdom
  • Piegsa, F. M. ETH Zürich, Institute for Particle Physics, Zürich, Switzerland
  • Pignol, G. LPSC, Université Grenoble Alpes, Grenoble, France
  • Plonka-Spehr, C. Institut für Kernchemie, Johannes-Gutenberg-Universität, Mainz, Germany
  • Prashanth, P. N. Instituut voor Kern- en Stralingsfysica, University of Leuven, Belgium
  • Quéméner, G. LPC Caen, ENSICAEN, Université de Caen, Caen, France
  • Rawlik, M. ETH Zürich, Institute for Particle Physics, Zürich, Switzerland
  • Rebreyend, D. LPSC, Université Grenoble Alpes, Grenoble, France
  • Ries, D. Paul Scherrer Institut, Villigen PSI, Switzerland - ETH Zürich, Institute for Particle Physics, Zürich, Switzerland
  • Roccia, S. CSNSM, Université Paris Sud, Orsay Campus, France
  • Rozpedzik, D. Marian Smoluchowski Institute of Physics, Jagiellonian University, Cracow, Poland
  • Schmidt-Wellenburg, P. Paul Scherrer Institut, Villigen PSI, Switzerland
  • Severijns, N. Instituut voor Kern- en Stralingsfysica, University of Leuven, Belgium
  • Thorne, J. A. Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, United Kingdom
  • Weis, Antoine Physics Department, University of Fribourg, Switzerland
  • Wursten, E. Instituut voor Kern- en Stralingsfysica, University of Leuven, Belgium
  • Wyszynski, G. Marian Smoluchowski Institute of Physics, Jagiellonian University, Cracow, Poland
  • Zejma, J. Marian Smoluchowski Institute of Physics, Jagiellonian University, Cracow, Poland
  • Zenner, J. Paul Scherrer Institut, Villigen PSI, Switzerland - ETH Zürich, Institute for Particle Physics, Zürich, Switzerland - Institut für Kernchemie, Johannes-Gutenberg-Universität, Mainz, Germany
  • Zsigmond, G. Paul Scherrer Institut, Villigen PSI, Switzerland
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    16.10.2015
Published in:
  • Physical Review Letters. - 2015, vol. 115, no. 16, p. 162502
English 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 takes advantage of the relative dephasing of spins arising from a gravitationally induced striation of stored UCNs of different energies, and also permits an improved determination of the vertical magnetic-field gradient with an exceptional accuracy of 1.1  pT/cm. This novel combination of a well-known nuclear resonance method and gravitationally induced vertical striation is unique in the realm of nuclear and particle physics and should prove to be invaluable for the assessment of systematic effects in precision experiments such as searches for an electric dipole moment of the neutron or the measurement of the neutron lifetime.
Faculty
Faculté des sciences
Department
Physique
Language
  • English
Classification
Physics
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https://folia.unifr.ch/unifr/documents/304787
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