Effect of Axial Flux Density Variations on the Determination of Neutron Fluences for LWR-PV Dosimetry

1992 ◽  
pp. 83-90 ◽  
Author(s):  
H.-C. Mehner
Keyword(s):  
Flux Density ◽  
Axial Flux ◽  
Neutron Fluences

Field Distribution of Strongly Excited Magnetic Lenses

1975 ◽  
Vol 33 ◽  
pp. 140-141
Author(s):  
M. Strojnik
Keyword(s):  
Flux Density ◽  
Field Distribution ◽  
Optical Axis ◽  
Operating Point ◽  
Pole Piece ◽  
Partial Saturation ◽  
Axial Flux ◽  
The Stability

Magnetic lenses operating in partial saturation offer two advantages in HVEM: they exhibit small cs and cc and their power depends little on the excitation IN. Curve H, Fig. 1, shows that the maximal axial flux density Bz max of one of the lenses investigated changes between points (3) and (4) by 5% as the excitation varies by 40%. Consequently, the designer can relax the requirements concerning the stability of the lens current supplies. Saturated lenses, however, can only be used if (i) unwanted fields along the optical axis can be controlled, (ii) 'wobbling' of the optical axis due to inhomogeneous saturation around the pole piece faces is prevented, (iii) ample ampere-turns can be squeezed into the space available, and (iv) the lens operating point covers a sufficient range of accelerating voltages.

PO-1317: Experimental determination of kBMQ up to a magnetic flux density of 1.5 T

2020 ◽  
Vol 152 ◽  
pp. S694-S695
Author(s):  
S. Pojtinger ◽  
R. Kapsch ◽  
D. Thorwarth
Keyword(s):  
Magnetic Flux ◽  
Experimental Determination ◽  
Flux Density ◽  
Magnetic Flux Density

Determination of the neutron flux density at an unknown reactor power

1987 ◽  
Vol 14 (12) ◽  
pp. 677-680
Author(s):  
F. Tomášek
Keyword(s):  
Neutron Flux ◽  
Flux Density ◽  
Reactor Power ◽  
Neutron Flux Density

scholarly journals Superluminal Motion in CTA 102

1989 ◽  
Vol 134 ◽  
pp. 529-530
Author(s):  
Ann E. Wehrle
Keyword(s):  
Flux Density ◽  
High Speed ◽  
Low Frequency ◽  
Precise Determination ◽  
Flux Variation ◽  
Low Frequencies ◽  
Superluminal Motion ◽  
Low Frequency Variability ◽  
Expansion Speed

Sholomitskii (1965) discovered that the flux density of the quasar CTA 102 varies at low frequencies on a timescale of a few months. Low-frequency variability can be explained by “superluminal flux variation” (Romney et al. 1984): If the intrinsic brightness of a component moving in a relativistically beamed source varies by only a few percent, the observer sees its flux density change by a much larger factor δ3-α when the optically thin blob moves almost directly toward the observer. Such a relativistically beamed source is likely to exhibit superluminal motion if studied with sufficient resolution and sensitivity. Superluminal motion in CTA 102 was discovered by Bååth (1987) who concluded on the basis of maps made at three epochs at a frequency of 932 MHz that two components were separating at a rate of 0.65 milliarcseconds (mas) per year. Using a redshift z = 1.037 and H0 = 100 km s−1 Mpc−1, q0 = 0.5, this expansion speed corresponds to (18 ± 4)h−1c. The extraordinarily high speed led us to make VLBI images of the source at a higher frequency in order to increase the resolution and make a more precise determination of the speed.

The determination of flux density gradients in Nb3Sn diffusion layers by means of the magneto-optical faraday effect

1980 ◽  
Vol 60 (2) ◽  
pp. 417-426 ◽  
Author(s):  
R. Potratz ◽  
W. Klein ◽  
H. U. Habermeier ◽  
H. Kronmüller
Keyword(s):  
Flux Density ◽  
Faraday Effect ◽  
Density Gradients ◽  
Diffusion Layers

Comparison of Iron Losses in Multiple Grain Size Iron Laminations under Sinusoidal and SPWM Excitation

2010 ◽  
Vol 670 ◽  
pp. 74-81 ◽  
Author(s):  
P. Rovolis ◽  
Antonios G. Kladas ◽  
J. Tegopoulos
Keyword(s):  
Grain Size ◽  
Flux Density ◽  
Fundamental Frequency ◽  
Pulse Width ◽  
Switching Frequency ◽  
Pulse Width Modulated ◽  
Iron Losses ◽  
Data Acquisition Card ◽  
Sinusoidal Excitation

The paper presents a methodology for determination of harmonic iron losses in laminated iron cores under both sinusoidal and sinusoidal pulse width modulated voltage excitations (SPWM) excitation for various frequencies. The method is based on measurements performed by using a convenient Epstein device supplied by a sinusoidal and a SPWM source, which are stored and processed in a PC by using an appropriate data acquisition card. It is shown that the switching frequency does not considerably affect iron losses under SPWM supply and vary non-linearly with flux density with respect to the ones measured under sinusoidal excitation for the same fundamental frequency.

scholarly journals Magnetic flux density distribution in axial flux machine cores

2005 ◽  
Vol 152 (2) ◽  
pp. 292 ◽  
Author(s):  
A.J. Hewitt ◽  
A. Ahfock ◽  
S.A. Suslov
Keyword(s):  
Magnetic Flux ◽  
Density Distribution ◽  
Flux Density ◽  
Magnetic Flux Density ◽  
Axial Flux ◽  
Flux Density Distribution
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