Electron's Anomalous Moment and Its Spin-Precession Frequency Shift

1974 ◽  
Vol 32 (9) ◽  
pp. 494-498 ◽  
Author(s):  
S. B. Lai ◽  
P. L. Knight ◽  
J. H. Eberly
Keyword(s):  
Frequency Shift ◽  
Spin Precession ◽  
Precession Frequency ◽  
Anomalous Moment

Frequency shift and relaxation of muon-spin-precession in Cd1−xMnxTe

1986 ◽  
Vol 31 (1-4) ◽  
pp. 375-379 ◽  
Author(s):  
A. Golnik ◽  
E. Albert ◽  
M. Hamma ◽  
E. Westhauser ◽  
A. Weidinger ◽  
...  
Keyword(s):  
Frequency Shift ◽  
Muon Spin ◽  
Spin Precession ◽  
Muon Spin Precession

scholarly journals 2D Frozen spin method of searching for the deuteron EDM in a storage ring

2019 ◽  
Author(s):  
Alexander Aksentev
Keyword(s):  
Dipole Moment ◽  
Angular Velocity ◽  
Magnetic Dipole ◽  
Magnetic Dipole Moment ◽  
Spin Dynamics ◽  
Vertical Plane ◽  
Lorentz Factor ◽  
Spin Precession ◽  
Precession Frequency ◽  
Spin Decoherence

The purpose of the present work is the development of a method for searching the electric dipole moment (EDM) of the deuteron inside the storage ring environment using the frozen spin method. The 2D frozen spin method is a variation on the original frozen spin method proposed at Brookhaven National Laboratory, in which the beam polarisation vector freely precesses in the vertical plane. One distinguishing feature of the 2D frozen spin method, is that it uses the radial magnetic fields induced by the accelerator optical lattice's imperfections to drive the vertical plane precession. The net electric + magnetic dipole moment spin precession frequency is measured. The EDM estimator is constructed as the sum of the net frequency estimates in two cases: when the beam circulates clockwise (CW), and when it does counter-clockwise (CCW). For the deuteron, since the experiment is performed in a combined ring, the beam circulation direction change requires flipping the polarity of the guiding magnetic field. When this is done, the imperfection fields change their sign as well, and so does the magnetic dipole moment (MDM) component of the spin precession angular velocity vector. Therefore, theoretically, the MDM term cancels in the EDM estimator. The trick is to calibrate the MDM precession frequency with sufficient precision. For that purpose, the concept of the effective Lorentz factor was introduced. We try to prove that particles having equal values of the effective Lorentz factor have equal spin tunes (and invariant spin axis orientations as well), and therefore, by controlling a single parameter -- the effective Lorentz factor -- it is possible to calibrate the MDM component of the precession frequency. A special calibration procedure is numerically modelled, with the conclusion that it allows sufficiently precise MDM spin precession frequency reproduction. Three major systematic effects of spin dynamics have been analysed: 1) perturbations to the particle spin dynamics caused by betatron oscillations, 2) spin decoherence in the zero spin resonance (frozen spin) region, 3) properties of the machine imperfection MDM spin precession angular velocity. We conclude that the first systematic effect is negligible; analyse the sextupole field approach to suppressing spin decoherence, and find it effective; find that the imperfections systematic error is linear, but asymmetric with respect to the beam circulation direction, which is more motivation for using the effective Lorentz factor as the tool for calibrating the MDM spin precession frequency. Overall, we find the proposed method effective.

scholarly journals Circularly polarized modes in magnetized spin plasmas

2010 ◽  
Vol 76 (6) ◽  
pp. 857-864 ◽  
Author(s):  
A. P. MISRA ◽  
G. BRODIN ◽  
M. MARKLUND ◽  
P. K. SHUKLA
Keyword(s):  
Magnetic Field ◽  
Cyclotron Frequency ◽  
Critical Magnetic Field ◽  
Magnetized Plasma ◽  
Spin Precession ◽  
Precession Frequency ◽  
Paramagnetic Resonance ◽  
Circularly Polarized ◽  
Spin Effects ◽  
Polarized Waves

AbstractThe influence of the intrinsic spin of electrons on the propagation of circularly polarized waves in a magnetized plasma is considered. New eigenmodes are identified, one of which propagates below the electron cyclotron frequency, one above the spin-precession frequency, and another close to the spin-precession frequency. The latter corresponds to the spin modes in ferromagnets under certain conditions. In the non-relativistic motion of electrons, the spin effects become noticeable even when the external magnetic field B0 is below the quantum critical magnetic field strength, i.e. B0 < BQ = 4.4138 × 109T and the electron density satisfies n0 ≫ nc ≃ 1032m−3. The importance of electron spin (paramagnetic) resonance (ESR) for plasma diagnostics is discussed.

On a new method in spectroscopy : laser-induced frequency shift of self-excited ion oscillations

1992 ◽  
Vol 2 (7) ◽  
pp. 1367-1372
Author(s):  
R. C. Bobulescu ◽  
M. A. Brǎtescu ◽  
C. Stǎnciulescu ◽  
G. Musa
Keyword(s):  
Frequency Shift ◽  
New Method ◽  
Spectroscopy Laser

SPIN PRECESSION AND PHASE DELAY TUNNELING TIMES

1988 ◽  
Vol 49 (C6) ◽  
pp. C6-17-C6-22 ◽  
Author(s):  
Z. HUANG ◽  
P. H. CUTLER ◽  
T. E. FEUCHTWANG ◽  
R. H. GOOD ◽  
Jr. ◽  
...  
Keyword(s):  
Phase Delay ◽  
Spin Precession ◽  
Tunneling Times

Research of the Brillouin frequency shift damage dependence from mechanical stresses in an optical sensor

2019 ◽  
Vol 9 (5) ◽  
pp. 512-521
Author(s):  
Ruslan V. Aginey ◽  
◽  
Rustem R. Islamov ◽  
Alexander A. Godunov ◽  
◽  
...  
Keyword(s):  
Frequency Shift ◽  
Optical Sensor ◽  
Mechanical Stresses
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