A new measurement resolves the cyclotron and spin levels for a single-electron quantum cyclotron to obtain a dimensionless electron magnetic moment, g, to 7.6 parts in 1013 (nearly six times better than in the past) and shifted by 1.7 standard deviations. The new g, with a quantum ...
Magnetic moments measurementQuantum measurement theoryAtomic fine structureQuantum electrodynamic effectsA measurement reported in 2008 uses a one-electron quantum cyclotron to determine the electron magnetic moment in Bohr magnetons,g/2 = 1.001 159 652 180 73 (28)[0.28 ppt], with an uncertainty 2.7...
We present a nonperturbative theory of superpositronium, the highly massive very-narrow-resonance states in the electron-positron system due to anomalous-m... AO Barut,J Kraus - 《Physical Review D》 被引量: 33发表: 1976年 The magnetic moment anomaly of the electron bound in hydrogenic ions...
Here we combine a very precise measurement of the magnetic moment of a single electron bound to a carbon nucleus with a state-of-the-art calculation in the framework of bound-state quantum electrodynamics. The precision of the resulting value for the atomic mass of the electron surpasses the ...
Measurement of the electron electric dipole moment using YbF molecules The most sensitive measurements of the electron electric dipole moment d(e) have previously been made using heavy atoms. Heavy polar molecules offer a grea... JJ Hudson,BE Sauer,MR Tarbutt,... - 《Physical Review Letters》...
Revealing the presence of magnetic octupole order and associated octupole fluctuations in solids is a highly challenging task due to the lack of simple external fields that can couple to magnetic octupoles. Here, we demonstrate a methodology for probing the magnetic octupole susceptibility of a candid...
Gabrielse, New measurement of the electron magnetic moment and the fine structure constant, Phys. Rev. Lett. 100 (2008) 120801 [arXiv:0801.1134] [INSPIRE]. Article ADS Google Scholar D. Hanneke, S.F. Hoogerheide and G. Gabrielse, Cavity control of a single-electron quantum cyclotron: ...
This technique has been applied in electron/positron magnetic moment measurements meÆ (ref. 3), however, its application to measure the magnetic moments of the proton/antiproton15,16 is much more challenging, since meÆ =mp;p" % 660. Therefore, to resolve single antiproton spin ...
Electron-spin-resonance investigation of the heavy-fermion compound $\\mathrm{Ce}({\\mathrm{Cu}}_{1\\ensuremath{-}x}{\\mathrm{Ni}}_{x}{)}_{2}{\\mathrm{Ge}}_{2}$ The nature of the magnetic order changes significantly from concentrations $x\\ensuremath{\\lesssim}0.5$ to $x>0.5...
Improved electron-beam ion-trap lifetime measurement of the ${\\mathrm{Ne}}^{8+} 1s2s{}^{3}{S}_{1}$ level An earlier electron-beam ion-trap (EBIT) lifetime measurement of the ${mathrm{Ne}}^{8+} 1mathrm{s}2mathrm{s}{}^{3}{S}_{1}$ level has been improved upon, re.....