Growth of nuclear spin precession frequency of antiprotons (negative hyperons) under deceleration in matter with polarized nuclei

2012 ◽  
Vol 711 (5) ◽  
pp. 394-397
Author(s):  
V.G. Baryshevsky
Keyword(s):  
Nuclear Spin ◽  
Spin Precession ◽  
Precession Frequency

scholarly journals Search for Axionlike Dark Matter through Nuclear Spin Precession in Electric and Magnetic Fields

2017 ◽  
Vol 7 (4) ◽  
Author(s):  
C. Abel ◽  
N. J. Ayres ◽  
G. Ban ◽  
G. Bison ◽  
K. Bodek ◽  
...  
Keyword(s):  
Dark Matter ◽  
Magnetic Fields ◽  
Nuclear Spin ◽  
Spin Precession ◽  
Electric And Magnetic Fields

Nuclear spin precession in MEMS vapour cells – key element of a nuclear magnetic resonance gyroscope

2021 ◽  
Author(s):  
Janine Riedrich-Moller ◽  
Riccardo Cipolletti ◽  
Marc Schmid ◽  
Thomas Buck ◽  
Robert Rolver ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Nuclear Spin ◽  
Spin Precession ◽  
Nuclear Magnetic

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

scholarly journals Nonlinear NMR and magnon BEC in antiferromagnetic materials with coupled electron and nuclear spin precession

2018 ◽  
Vol 97 (2) ◽  
Author(s):  
L. V. Abdurakhimov ◽  
M. A. Borich ◽  
Yu. M. Bunkov ◽  
R. R. Gazizulin ◽  
D. Konstantinov ◽  
...  
Keyword(s):  
Nuclear Spin ◽  
Spin Precession ◽  
Antiferromagnetic Materials

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.

Vibrational and thermal averaging of the indirect nuclear spin-spin coupling constants of CH4, SiH4, GeH4 and SnH4

1997 ◽  
Vol 91 (5) ◽  
pp. 897-907 ◽  
Author(s):  
SHEELA KIRPEKAR ◽  
THOMAS ENEVOLDSEN ◽  
JENS ODDERSHEDE ◽  
WILLIAM RAYNES
Keyword(s):  
Nuclear Spin ◽  
Coupling Constants ◽  
Spin Coupling ◽  
Spin Coupling Constants ◽  
Spin Spin Coupling

RESEARCH NOTE Nuclear spin statistical weights revisited

1999 ◽  
Vol 97 (6) ◽  
pp. 821-824 ◽  
Author(s):  
Per Jensen, P. R. Bunker
Keyword(s):  
Nuclear Spin ◽  
Research Note
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