Results 181 to 190 of about 194,391 (210)
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Electric Field Gradient Effects on Magnetic Susceptibility

2004
Abstract A general expression for the magnetic susceptibility of a molecule in the presence of a time-independent, spatially uniform magnetic field, and a non-uniform electric field with a uniform gradient is discussed. The molecular response can be described by magnetic susceptibility polarizability tensors that depend on the choice of the origin ...
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Magnetic field of longitudinal gradient bend

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2018
Abstract The longitudinal gradient bend is an effective method for reducing the natural emittance in light sources. It is, however, not a common element. We have analyzed its magnetic field and derived a set of formulae. Based on the derivation, we discuss how to model the longitudinal gradient bend in accelerator codes that are used for designing ...
Masamitsu Aiba   +3 more
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Magnetic Field Gradient in the Sunspot Umbra

Publications of the Astronomical Society of Japan, 1976
Abstract Echelle spectrograms of three sunspot umbrae were obtained with a wide wavelength-range analyzer of the circular polarization at the Okayama Astrophysical Observatory. The magnetic field derived from the Zeeman shift of many absorption lines cannot be interpreted by a single spectrum, but suggests a composite of two spectra, one
Mitsugu Makita, Kiyokazu Nemoto
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Animated gradient magnetic field topography

International Congress Series, 2004
Abstract It is difficult to comprehend extents and dynamic changes of biomagnetic brain activities from electrically equivalent current dipole (ECD) estimation. The author proposed animated gradient magnetic field topography to solve this. Neuromag System with 102 orthogonal paired planar type gradiometers was used. Measured data at 102 sensor points
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Hardware, Especially Gradient Magnetic Fields

2008
I am often asked why I bother to teach about the “nuts and bolts” of the MRI scanner system. After all, with the exception of physicists and engineers who are specifically interested in dealing with and perhaps modifying the hardware components of the scanner, virtually every MR user will leave the upkeep of the system to professional service personnel.
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Magnetic field gradient in K–Rb–21Ne comagnetometer: Measurement, decoupling and suppression

Sensors and Actuators A: Physical, 2023
, Haoying Pang, Zhuo Wang
exaly  

CHAPTER 5. Magnetic Field Gradients

2016
Magnetic field gradients are an integral component in all MRI and NMR systems. The first part of this chapter describes the different design methods that can be used to produce gradients with high linearity, high efficiency and low eddy currents. Challenges that have to be faced include heating from the very large currents present in the gradient coils
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