Das magnetische Moment des Silberatoms

Gerlāch, Wālther; Stern, O.

doi:10.1007/bf01326984

Cited by 225 publications

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“…The concept of the spin quantum number in units of 2 introduced by Goudsmit and Uhlenbeck in 1925 [1] and the observation of the quantization of the associated magnetic moment by Stern and Gerlach in 1922 [2] led to the understanding of the anomalous Zeeman effect and the fine structure splitting of spectral lines. Dirac [3] showed that the spin is a purely relativistic effect and that the electron's magnetic moment is the Bohr magneton μ B = e /2m.…”

Section: Introductionmentioning

confidence: 99%

Electron g‐factor determinations in Penning traps

2013

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The magnetic moment of the electron, expressed by the g-factor in units of the Bohr magneton, is a key quantity in the theory of quantum electrodynamics (QED). Experiments using single particles confined in Penning traps have provided very precise values of the g-factor for the free electron as well as the electron bound in hydrogen-like ions. In this paper the status of these experiments is reviewed. The results allow testing calculations of higher order Feynman diagrams. Comparison of experimental and theoretical results for free and bound particles show no discrepancy within the limits of error, thus representing to date the most sensitive test of QED. Moreover, the g-factor provides a unique access to fundamental constants, as e.g. the electron mass or the fine structure constant.

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Section: Introductionmentioning

confidence: 99%

Electron g‐factor determinations in Penning traps

2013

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“…One of the earliest attempts to envision atom interferometry was considered shortly after the discovery of the Stern-Gerlach (SG) effect almost a century ago 40 . The SG effect, which has become a paradigm of quantum mechanics 41 , uses a magnetic gradient to split particles into momentum states with different spin projections.…”

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confidence: 99%

Coherent Stern–Gerlach momentum splitting on an atom chip

2013

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In the Stern-Gerlach effect, a magnetic field gradient splits particles into spatially separated paths according to their spin projection. The idea of exploiting this effect for creating coherent momentum superpositions for matter-wave interferometry appeared shortly after its discovery, almost a century ago, but was judged to be far beyond practical reach. Here we demonstrate a viable version of this idea. Our scheme uses pulsed magnetic field gradients, generated by currents in an atom chip wire, and radio-frequency Rabi transitions between Zeeman sublevels. We transform an atomic Bose-Einstein condensate into a superposition of spatially separated propagating wavepackets and observe spatial interference fringes with a measurable phase repeatability. The method is versatile in its range of momentum transfer and the different available splitting geometries. These features make our method a good candidate for supporting a variety of future applications and fundamental studies.

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“…The first observation of quantized atomic magnetic moments was made by Stern and Gerlach in the 1922 [1] experiment where a flat beam of silver atoms was passed through a non-homogeneous magnetic field and the beam was observed to split into two. Classical theory predicts a continuous spread of the beam.…”

Section: Some Definitionsmentioning

confidence: 99%

“…The observation of the beam splitting was first explained by Goudsmit and Uhlenbeck [2] as a result of electron spin quantization. 1 Unless otherwise noted, we use natural units where c=h=1.…”

Section: Some Definitionsmentioning

confidence: 99%

A Measurement of the Bs Lifetime at CDF Run II

Farrington¹

2004

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Das magnetische Moment des Silberatoms

Cited by 225 publications

References 0 publications

Electron g‐factor determinations in Penning traps

Electron g‐factor determinations in Penning traps

Coherent Stern–Gerlach momentum splitting on an atom chip

A Measurement of the Bs Lifetime at CDF Run II

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