Results 241 to 250 of about 4,233,108 (280)

Frequency-dependent dipole shielding factors

Journal of Physics B: Atomic and Molecular Physics, 1969
A frequency-dependent dipole shielding factor βinfinity(ω) is defined as the coefficient of proportionality between the electric-dipole induced field and a uniform external electric field, at the nucleus, when the external field varies sinusoidally with time and with circular frequency ω. From oscillator sum rules it is shown that βinfinity(ω) = N/Z0 +
V G Kaveeshwar, A Dalgarno, R P Hurst
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Shielding Factors and External Dose Evaluation

Radiation Protection Dosimetry, 1987
The kerma in typical European houses in urban and suburban environments due to the gamma radiation from the contamination of different deposition areas such as lawns, trees, windows, walls, roofs, paved areas, light-shafts and internal surfaces has been calculated by extensive Monte Carlo simulations.
P. Jacob, R. Meckbach (INVITED)
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The polarizabilities and shielding factors of the beryllium sequence

Proceedings of the Physical Society, 1965
The fully coupled Hartree-Fock approximation is used to calculate the dipole and quadrupole polarizabilities and shielding factors of Be, B+ and C2+.
A Dalgarno, H A J McIntyre
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Moment method analysis of the electric shielding factor of a conducting TM shield at ELF

IEEE Transactions on Electromagnetic Compatibility, 1995
This paper presents an integral equation and method of moments (MM) solution to the problem of TM transmission by a metallic conducting shield at extremely low frequencies (ELF). To obtain an accurate and efficient solution, the equivalent volume polarization currents representing the shield are expanded in terms of physical basis functions ...
E.H. Newman, M. Kragalott
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Charts for estimating the axial shielding factors of open-ended cylindrical shields

IEEE Transactions on Magnetics, 1999
Axial shielding factors of single and double-shell open-ended cylindrical magnetic shields are calculated numerically and represented by charts. It is assumed that the thickness of the shells is small (1%) compared to the largest diameter and the permeability is independent of magnetic induction.
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The Filling Factor of Shielded Dielectric Resonators

IEEE Transactions on Microwave Theory and Techniques, 1969
The use of dielectric resonators at microwave frequencies usually requires a shield to prevent loss of energy by radiation, and a coupling network. The efficiency of a given circuit depends on the filling factor, which expresses the circuit ability to store most of the input energy in the resonator, and little in the coupling network and surrounding ...
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Stress intensity factors for crack tip shielding or anti-shielding by impurity atoms

International Journal of Fracture, 1986
The average value of the crack tip stress intensity factor produced by a row of impurity atoms is calculated in this paper. The row of impurity atoms lies parallel to the crack front and is situated at an arbitrary position about a crack. The impurity atom produced mode I shielding/antishielding stress intensity factor LiI for a row of impurity atoms ...
J. Weertman, J. E. Hack
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Atomic shielding factors for nuclear moments

Zeitschrift f�r Physik, 1967
Atomic shielding factors describe the effect of a deformation of the electron core on the hyperfine structure, which is important for the spectroscopic determination of nuclear moments. For the quadrupole moment they are known as Sternheimer corrections. Such shielding factors for free atoms are discussed in the picture of configuration interaction for
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Shielding factors of grain oriented 3% SiFe cylinder

IEEE International Magnetics Conference, 1999
We have measured the magnetic shielding factor and permeability of 3% SiFe cylinders with various diameters under the same test frequency, magnetization level, and geometry conditions. The measured shielding factor has been compared with the estimated one by using the measured permeability for the single- and double-layered cylinders.
null Yeon-Choon Chung, null Byung-Chill Woo, null Dong-Chul Park   +2 more
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Electrostatic Polarizability and Shielding Factors for Ions of Neon Configuration

Physical Review, 1967
Dipole and quadrupole polarizabilities and shielding factors for 10-electron closed-shell ions from ${\mathrm{O}}^{\ensuremath{-}\ensuremath{-}}$ to ${\mathrm{Si}}^{4+}$ have been calculated following the self-consistent perturbation procedure. Results are accurate in the coupled Hartree-Fock scheme. Interpolation relations have been obtained which may
J. Lahiri, A. Mukherji
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