A measurement of the neutron to 199Hg magnetic moment ratio

S. Afach , C.A. Baker , G. Ban (1) , G. Bison , K. Bodek , M. Burghoff , Z. Chowdhuri , M. Daum , M. Fertl , B. Franke , P. Geltenbort (2) , K. Green , M.G.D. van Der Grinten , Z. Grujic , P.G. Harris , W. Heil , V. Helaine (1) , R. Henneck , M. Horras , P. Laydjiev , S.N. Ivanov , M. Kasprzak , Y. Kermaïdic (3) , K. Kirch , A. Knecht , H.-C. Koch , J. Krempel , M. Kuzniak , B. Lauss , T. Lefort (1) , Y. Lemière (1) , A. Mtchedlishvili , O. Naviliat-Cuncic (1) , M. Perkowski , E. Pierre (1) , F.M. Piegsa , G. Pignol (3) , P.N. Prashanth , G. Quéméner (1) , D. Rebreyend (3) , D. Ries , S. Roccia (4) , P. Schmidt-Wellenburg , A. Schnabel , N. Severijns , D. Shiers , K.F. Smith , J. Voigt , A. Weis , G. Wyszynski , J. Zejma , J. Zenner , G. Zsigmond

1 LPCC - Laboratoire de physique corpusculaire de Caen
2 ILL - Institut Laue-Langevin
3 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
4 CSNSM SNO

The neutron gyromagnetic ratio has been measured relative to that of the 199Hg atom with an uncertainty of 0.8 ppm. We employed an apparatus where ultracold neutrons and mercury atoms are stored in the same volume and report the result $\gamma_{\rm n}/\gamma_{\rm Hg} = 3.8424574(30)$.

Domaines: Physique Nucléaire Expérimentale [nucl-ex]; Physique Atomique [physics.atom-ph]; Instrumentations et Détecteurs [physics.ins-det]

S. Afach, C.A. Baker, G. Ban, G. Bison, K. Bodek, et al.. A measurement of the neutron to 199Hg magnetic moment ratio. Physics Letters B, 2014, 739, pp.128-132. ⟨10.1016/j.physletb.2014.10.046⟩. ⟨in2p3-01079065⟩