Results 251 to 260 of about 223,255 (303)

Estimation of Shielding Factors for Linear Accelerators*

Health Physics, 2002
There have been a number of persons who have estimated that the use of multi-leaf collimation and IMRT techniques increase the workload in treatment rooms to the extent that assumptions used in shielding calculations should reflect these increased workloads.
James, Mechalakos, Jean, St Germain
openaire   +2 more sources

Electronic Polarizabilities and Sternheimer Shielding Factors

Physical Review, 1963
A new method is developed for determining the distortions (polarizabilities) induced in electronic distributions by valence electrons and/or crystalline fields and their effect (expressed as Sternheimer shielding factors) on magnetic and electric hyperfine interactions.
R. E. Watson, A. J. Freeman
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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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Influencing factors and rules of shielding effectiveness of electromagnetic shielding clothing sleeve

International Journal of Clothing Science and Technology, 2020
PurposeThe change rules of the shielding effectiveness (SE) of the sleeve has not been clarified, which leads to the lack of the basis for the design, manufacture and evaluation of the electromagnetic shielding (EMS) clothing.Design/methodology/approachAccording to a simplified analysis model, a series of sleeve samples with different fabrics and ...
Xiuchen Wang, Zhe Liu, Long Wu, Yue Wang, Ying Su   +4 more
openaire   +1 more source

The shielding factor of underground cable sheaths

Proceedings of the IEE - Part II: Power Engineering, 1953
The shielding factor of a cable buried in the ground has been investigated, and it is shown that it may be considered in terms of three components. The first of these depends on the sheath construction only, and is the factor normally considered for high-frequency shielding.
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Calculation of Polarizabilities and Shielding Factors

The Journal of Chemical Physics, 1961
Measurements on CaF/sub 2):Tm IH are reported, and measurements on Ca/F/ sub 2/:Yb lV are included for comparison. The crystals were x irradiated at 77 deg K and the ESR spectrum investigated without allowing the crystals to warm up. The spectrum is assigned to Tm/sup 169/ III which is isoelectronic with Yb IV (4f/ sup 13/sup 2/F/sup 7/2/). This result
A. Dalgarno, J. M. McNamee
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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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Atomic polarizabilities and shielding factors

Advances in Physics, 1962
Abstract A detailed discussion is given of the methods of calculating atomic polarizabilities and shielding factors and the relationships between them are demonstrated. The formulation of the uncoupled Hartree-Fock approximation is presented and it is shown that the methods are all approximate versions of it.
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Gamma shielding factor for typical houses in Brazil

Radiation Protection Dosimetry, 2006
The housing features in a country depend much on its climate. Dwellings in warm countries are much lighter constructions than in cold ones, which will reflect on the amount of shielding against radiation they provide. In addition to that, wealth is another factor that influences the building's finishing.
I C P, Salinas, C C, Conti, E R R, Rochedo, R T, Lopes   +3 more
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A new estimation of the axial shielding factors for multishell cylindrical shields

Journal of Applied Physics, 2000
A new, more accurate formula describing double and multiple-shell axial magnetic shielding is obtained as a result of numerical verification of existing estimations. A standard ANSYS® software package was used. Parameters of the numerical model are as follows. Two concentric, closed cylinders of equal thickness and constant permeability are considered.
Eugene Paperno, Hiroyuki Koide, Ichiro Sasada   +2 more
openaire   +1 more source