Results 241 to 250 of about 130,526 (292)
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Magnetic shielding of Rogowski coils
2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2017This paper describes the impact of Rogowski coil (RC) construction imperfections on measurement errors. A procedure is shown for detecting RC non-homogeneity using a rotary dipole magnetic field inducing a current inside an RC. The influence of RC magnetic shielding on reducing spurious fields is described.
Karel Draxler, Renata Styblikova
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Magnetic shielding of magnetic resonance systems
Magnetic Resonance in Medicine, 1989AbstractBasic theoretical concepts of static magnetic shielding are summarized. Expressions describing the magnetic field produced by a solenoidal coil confined coaxially inside a long thin ferromagnetic cylinder of constant permeability are derived. Conditions for the optimum arrangement of a magnetic screen for whole‐body NMR systems are discussed. ©
E R, Andrew, E, Szczesniak
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Shielding effect of superconducting magnetically shielded room
IEEE Transactions on Magnetics, 1997A Superconducting Magnetically Shielded Room (SMSR) has been developed. Superconducting panels are soldered to form a shielding wall of which the soldered connections have normal conduction. Therefore, the Shielding Factor (SF) of the SMSR degrades especially at low frequency, which is different from a superconducting shielded room without a normal ...
K. Yamazaki +5 more
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Anisotropic Magnetic Shielding Effectiveness of Magnetic Shielded Package
IEEE Transactions on Magnetics, 2017In this paper, an analysis method and a measurement method for anisotropic magnetic shielding effectiveness (MSE) are discussed. Some magnetic sensors and memories require small magnetic shielded packages to decrease the influence of external magnetic noise.
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Magnetic shielding and minimization of shielding material
IEEE Transactions on Magnetics, 1994The guide lines on magnetic shielding in general cases are given. The relationship between leakage fields and electromagnetic properties of ferromagnetic material used in the magnetic shielding is clarified. Along such guide lines, magnetic field analysis is discussed from the viewpoint of minimizing the amount of the shielding material, which is quite
H. Sasaki, T. Shiraishi, A. Kawanishi
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Demagnetization of magnetically shielded rooms
Review of Scientific Instruments, 2007Magnetically shielded rooms for specific high resolution physiological measurements exploiting the magnetic field, e.g., of the brain (dc-magnetoencephalograpy), low-field NMR, or magnetic marker monitoring, need to be reproducibly demagnetized to achieve reliable measurement conditions.
F, Thiel +4 more
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The effect of shaking on magnetic shields
IEEE Transactions on Magnetics, 1980The increase of the shielding factor due to shaking was measured in a scale model for a magnetically shielded room. The increase was found to be 7 dB for a single-layer square cylinder biased by the Earth's magnetic field. The shielding factor of a large-volume three-layer Mumetal® room was estimated to increase by a factor of 30, thus confirming the ...
Kelhä, Väinö +2 more
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Analog studies of magnetic shields.
AIAA Journal, 1966Externally deflecting magnets provide a protective region around space vehicles which shields them from the hazardous space radiation. The magnetic shield simulator (MAGSIM) is an analog device that provides a simple means for directly measuring the forbidden volume or protective region produced by externally deflecting magnets.
R. LEPPER, S. LEVINE
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Concrete for magnetic shielding
Cement and Concrete Research, 1995The use of steel paper clips in the amount of 5 vol.% in concrete was found to result in concrete with magnetic shielding (60 Hz) ability comparable to steel mesh. Furthermore, the paper clips did not affect the compressive strength of the concrete. The paper clips were discontinuous enough for mixing with the concrete mix, while their intertwining ...
Zheng-Qiang Shi, D.D.L. Chung
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