Measurement of the neutron incoherent scattering length of Hg 199 using stored ultracold neutrons
Year: 2026
Type: article
Abstract: We present the first direct measurement of the neutron incoherent scattering length of 199Hg. The measurement was performed with the Ramsey apparatus of the neutron electric dipole moment experiment located at the Paul Scherrer Institute. The incoherent scattering length đi was determined by investigating the pseudomagnetic effect due to the strong interaction between the neutron spins and the nuclear spins of mercury atoms. The resulting frequency shift of the neutron Larmor precession frequency was determined for various 199Hg density and polarization values. The obtained value of đi=(â16.2±2.0)âąfm agrees in magnitude with previous determinations and provides the so-far unknown sign of the quantity.
Source: Physical Review C
DOI: 10.1103/qtwt-drlz
Authors: C. Abel, K. Bodek, E. Chanel, P.-J. Chiu, C. B. Crawford, M. Daum, C. B. Doorenbos, S. Emmenegger, M. Fertl, P. Flaux, A. Fratangelo, W. C. Griffith, P. Harris, K. Kirch, V. Kletzl, P. A. Koss, J. Krempel, B. Lauss, T. Lefort, P. Mohanmurthy, O. Naviliat-Cuncic, D. Pais, F. M. Piegsa, G. Pignol, C. Pistillo, D. Rebreyend, I. Rienaecker, D. Ries, S. Roccia, D. Rozpedzik, P. Schmidt-Wellenburg, N. Severijns, K. Svirina, J. Thorne, S. Touati, E. Wursten, N. Yazdandoost, J. Zejma
Institutions: University of Sussex, Jagiellonian University, University of Bern, Paul Scherrer Institute, ETH Zurich, University of Kentucky, Johannes Gutenberg University Mainz, Centre National de la Recherche Scientifique, Ăcole Nationale SupĂ©rieure d'IngĂ©nieurs de Caen, Laboratoire de Physique Corpusculaire de Caen, Institut National de Physique NuclĂ©aire et de Physique des Particules, UniversitĂ© de Caen Normandie, KU Leuven, Institut polytechnique de Grenoble, Laboratoire de Physique Subatomique et de Cosmologie, UniversitĂ© Grenoble Alpes
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: National Science Foundation, University of Bern, University of Sussex, Agence Nationale de la Recherche, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Eidgenössische Technische Hochschule ZĂŒrich, Fonds Wetenschappelijk Onderzoek, KU Leuven, Paul Scherrer Institut, Directorate for Mathematical and Physical Sciences, Science and Technology Facilities Council
Awards: Measurement of the electric dipole moment of the neutron., Search for the neutron EDM at the high intensity ultracold neutron source at PSI with an upgraded high sensitivity spectrometer â Follow-up application, Precision Physics with Muons and Ultracold Neutrons II, Pushing the high intensity frontier for ultracold neutrons, G1893237010, Sussex Experimental Particle Physics 2015 Consolidated Grant, G2322385174, Search for signals of physics beyond the Standard Model with n2EDM at PSI, G2738698970, Search for the neutron EDM at the high intensity ultracold neutron source at PSI with an upgraded high sensitivity spectrometer â Follow-up application II., Spin-spectroscopy with ultracold neutrons - Searching for dark matter and lorentz violation using spin-precessing neutrons, Precision Physics with Muons and Ultracold Neutrons, A novel neutronics model of the solid D2 ultracold neutron converter at PSI aiming for increasing the source intensity, Toward a measurement of the neutron electric dipole moment, STFC Experimental Particle Physics 2018 Consolidated Grant, Unique Method for a Neutron Electric Dipole Moment Search using a Pulsed Beam, Search for the neutron EDM at the high intensity ultracold neutron source at PSI with an upgraded high sensitivity spectrometer, Highly accurate vector gradiometers for a next-generation neutron EDM experiment, The PSI polarized ultracold neutron source: optimization and first test measurements, G5852332965, G6267998985, Measurement of the neutron electric dipole moment, G691666671, Low Energy Particle Physics with Cold and Ultracold Neutrons II, G7724730833, A new search for an electric dipole moment of the neutron with increased sensitivity and an improved UCN source., Low Energy Particle Physics with Cold and Ultracold Neutrons, G8046919925, G8094256729, Towards the first measurement in the 10^-27 e.cm range for the neutron electric dipole moment, Mesure du moment Ă©lectrique dipolaire du neutron, G8914429677, G9000848216, G9000849205, G9000849358
OpenAlex ID: W7161626467