GET 198–2017, State Primary Standard of Unit of Power of Magnetic Losses and Unit of Magnetic Induction of Constant Magnetic Field in Range from 0.1 to 2.5 T and Magnetic Flux from 1·10–5 to 3·10–2 Wb

2018 ◽  
Vol 61 (3) ◽  
pp. 199-202 ◽  
Author(s):  
E. A. Volegova ◽  
M. A. Malygin ◽  
T. I. Maslova ◽  
A. S. Volegov
Keyword(s):  
Magnetic Field ◽  
Magnetic Flux ◽  
Magnetic Induction ◽  
Constant Magnetic Field ◽  
Primary Standard ◽  
State Primary Standard ◽  
Magnetic Losses

Research on expanding the range of reproduction of magnetic flux density of the DC field of the state primary standard GET12-2011

2020 ◽  
pp. 3-7
Author(s):  
Vladlen Ya. Shifrin ◽  
Denis I. Belyakov ◽  
Alexander E. Shilov ◽  
Denis D. Kosenko
Keyword(s):  
Magnetic Flux ◽  
Magnetic Induction ◽  
Frequency Conversion ◽  
Magnetic Measurements ◽  
Primary Standard ◽  
Uncertainty Budget ◽  
The State ◽  
State Primary Standard ◽  
Magnetic Flux Density ◽  
Constant Field

The results of works aimed at increasing the level of uniformity of measurements of the magnetic induction of a constant field – the basic value in the field of magnetic measurements. A set of equipment for reproducing a unit of magnetic induction of a constant field in the range of 1–25 mT was created and described. The inclusion of this complex in the State primary standard of units of magnetic induction, magnetic flux, magnetic moment and magnetic induction gradient GET 12-2011 will ensure the reproduction and direct transmission of the unit of permanent magnetic induction in the ranges of not only weak (10–3–1 mT), but medium (1–25 mT) and strong (0.025–1 T) magnetic fields. A quantum cesium magnetometer based on the resolved structure of cesium atoms was created to transmit the unit of magnetic induction to the region of medium fields. The procedure for calculating the frequency conversion coefficients to magnetic induction of the created quantum cesium magnetometer is described. The uncertainty budget for reproducing a unit of magnetic induction of a constant field using the created complex is estimated.

State primary standard of the units of magnetic induction and magnetic flux and their ratios

1991 ◽  
Vol 34 (10) ◽  
pp. 967-972 ◽  
Author(s):  
V. N. Kalabin ◽  
V. E. Chernyshev ◽  
V. N. Khorev ◽  
A. E. Shilov ◽  
V. Ya. Shifrin
Keyword(s):  
Magnetic Flux ◽  
Magnetic Induction ◽  
Primary Standard ◽  
State Primary Standard

State primary standard for the units of magnetic induction, magnetic flux, magnetic moment, and magnetic induction gradient

2012 ◽  
Vol 55 (7) ◽  
pp. 739-744
Author(s):  
V. Ya. Shifrin ◽  
V. N. Khorev ◽  
V. N. Kalabin ◽  
S. L. Voronov ◽  
A. E. Shilov
Keyword(s):  
Magnetic Flux ◽  
Magnetic Moment ◽  
Magnetic Induction ◽  
Primary Standard ◽  
State Primary Standard

Research of influence of working area geometric dimensions on spatial distribution of magnetic field inside the matrix of a polygradient separator.

2020 ◽  
Vol 14 (1) ◽  
pp. 13-20
Author(s):  
І.О. ШВЕДЧИКОВА ◽  
◽  
Ю.А. РОМАНЧЕНКО ◽  
Keyword(s):  
Magnetic Field ◽  
Spatial Distribution ◽  
Magnetic Flux ◽  
Magnetic Induction ◽  
Software Package ◽  
Three Dimensional ◽  
Air Gap ◽  
Structural Variants ◽  
Wide Range ◽  
Electromagnetic Separator

The possibility of application of the Infolytica software package to solve the main tasks of work is substantiated. The computer 3D-model of electromagnetic separator was verified by solving of test problem. Comparison of results of magnetic induction research for characteristic points obtained during 3D modeling of electromagnetic separator with data obtained during experimental research showed a fairly high consistency. An analysis of geometric dimensions influence on distribution of magnetic field in a polygradient matrix was carried out for a random sampling containing three structural variants of an electromagnetic separator, the working air gap of which varies over a wide range. It is shown that determination of magnetic flux distribution for other structural variants of matrix that located inside sampling can be carried out by interpolation. For selected variants, three-dimensional computer models of electromagnetic separator are developed, their geometric characteristics and physical properties are described. A numerical-field analysis of magnetic field spatial distribution in working air gap of polygradient matrix of electromagnetic separator was carried out using Magnet module of Infolytica software package. For three three-dimensional models of electromagnetic system of separator, numerical values of magnetic induction and magnetic flux in working air gap of polygradient matrix in center of characteristic area are obtained. The obtained results for three models are compared and variant with rational parameters of working area of separator matrix is selected

scholarly journals STUDY OF ACOUSTIC SOURCE EXCITED BY PULSED MAGNETIC FIELD

2021 ◽  
pp. 2140008
Author(s):  
YANJU YANG ◽  
CHUNLEI CHENG ◽  
WENYAO YANG ◽  
JIE LI ◽  
ZHENGFU CHENG ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
Analytical Solution ◽  
Magnetic Flux ◽  
Flux Density ◽  
Magnetic Induction ◽  
Pulsed Magnetic Field ◽  
Magnetic Flux Density ◽  
Acoustic Source ◽  
Thermoacoustic Imaging

In magnetoacoustic tomography with magnetic induction and magnetically mediated thermoacoustic imaging, tissues are exposed to an alternating field, generating magnetoacoustic and thermoacoustic effects in the tissues. This study aimed to investigate the relationship between magnetoacoustic and thermoacoustic effects in a low-conductivity object put in a Gauss-pulsed alternating magnetic field. First, the derivations of the magnetic flux density and electric field strength induced by a Gauss-pulsed current flowing through the coil based on the theory of electromagnetic field were examined. Second, the analytical solution of the magnetic field was studied by simulation. To validate the accuracy of the analytical solution, the analytical solution and the numerical simulation of the magnetic flux density were compared. It shows that the analytical solution coincides with the numerical simulation well. Then, based on the theoretical analysis of the acoustic source generation, numerical studies were conducted to simulate pressures excited by magnetoacoustic and thermoacoustic effects in low-conductivity objects similar to tissues in the Gauss-pulsed magnetic field. The thermoacoustic effect played a leading role in low-conductivity objects placed in the Gauss-pulsed magnetic field, and the magnetoacoustic effect could be ignored. This study provided the theoretical basis for further research on magnetoacoustic tomography with magnetic induction and magnetically mediated thermoacoustic imaging for pathological tissues.

State Primary Standard for units of magnetic induction

1981 ◽  
Vol 24 (7) ◽  
pp. 523-526
Author(s):  
K. K. Barakhnin ◽  
S. V. Baunin ◽  
V. L. Rusanova ◽  
N. V. Studentsov ◽  
V. N. Khorev ◽  
...  
Keyword(s):  
Magnetic Induction ◽  
Primary Standard ◽  
State Primary Standard

QUANTUM CIRCUITS IN THE PRESENCE OF A MAGNETIC FIELD

2012 ◽  
Vol 26 (21) ◽  
pp. 1250138 ◽  
Author(s):  
CONSTANTINO A. UTRERAS-DÍAZ ◽  
DAVID LAROZE
Keyword(s):  
Magnetic Field ◽  
Energy Spectrum ◽  
Magnetic Flux ◽  
Constant Magnetic Field ◽  
Quantum Circuit ◽  
Numerical Approach ◽  
Quantum Circuits ◽  
Energy Spectra ◽  
Experimental Conditions ◽  
Lc Circuit

In the present work, we consider a quantum LC circuit under a constant magnetic field. In particular, we derive a new discretized form of the Schrödinger equation, which is equivalent to introducing a potential in the pseudo-flux representation. We discuss the physical assumptions leading to our results, and using a direct numerical approach we calculate the energy spectrum of the LC quantum circuit as a function of a constant external magnetic flux. The results are compared with the spectrum obtained using the Li–Chen potential [Y. Q. Li and B. Chen, Phys. Rev. B 53 (1996) 4027]. Our results indicate that the energy spectra from both models are numerically different, hence they may be clearly distinguished under appropriate experimental conditions.

scholarly journals Changes in infectious titer of Black sea algal virus of the microalgae tetraselmis viridis under the influence of a constant magnetic field

2020 ◽  
pp. 35-39
Author(s):  
O.A. Stepanova ◽  
◽  
P.V. Gaisky ◽  
S.A. Sholar ◽  
◽  
...  
Keyword(s):  
Magnetic Field ◽  
Black Sea ◽  
Magnetic Induction ◽  
Constant Magnetic Field ◽  
Algal Virus ◽  
Infectious Titer ◽  
Algal Viruses ◽  
Order Of Magnitude ◽  
Tetraselmis Viridis

In three experiments aimed at studying the effect of a constant magnetic field with a magnetic induction of 600 G and a duration of experiments of 24 and 36 h, it was found that with a low initial titer of the algal virus of the microalgae Tetraselmis viridis, its stay in a magnetic field for 24 h led to an increase in the infectious titer by one order of magnitude. However, when the virus with a higher infectious titer was in a magnetic field for 24 h, no changes in the titer were observed, and after 36 h, its decrease by one order of magnitude was recorded. The results obtained indicate the need for further research in this direction, with using a wider range of algal viruses.

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