Results 261 to 270 of about 555,638 (313)

Absorptive form factors for high-energy electron diffraction [PDF]

open access: possibleActa Crystallographica Section A Foundations of Crystallography, 1990
The thermal diffuse scattering contribution to the absorptive potential in high-energy electron diffraction is calculated in the form of an absorptive contribution to the atomic form factor. To do this, the Einstein model of lattice vibrations is used, with isotropic Debye-Waller factors.
D. M. Bird, Q. A. King
openaire   +1 more source

Magnetic form factor for itinerant-electron systems

Physical Review B, 1994
First-principles calculations of the itinerant-electron magnetic form factor for ferromagnets which include both the spin and orbital contributions have been completed for ferromagnetic nickel and iron. To our knowledge, these are the first calculations of this type for 3[ital d] ferromagnets.
John A. Blackman, J. F. Cooke
openaire   +3 more sources

Electron-scattering form factors for the giant dipole resonance [PDF]

open access: possibleJournal of Physics G: Nuclear and Particle Physics, 1995
Using a previously developed formalism based on the generator coordinate method, the longitudinal- and transverse-excitation form factors for the giant dipole resonance are obtained. Although microscopically established, that approach can provide analytic and compact expressions for some selected closed-shell nuclei.
M Barbi   +3 more
openaire   +1 more source

Form Factors in Electron-Trinucleon Scattering

Physical Review, 1965
Abstract : The four form factors in electron-trinucleon (e-H3 or e-He3) elastic scattering are analyzed using two alternative sets of four unknowns: (i) the neutron electric form factor, the form factor F for the dominant S state and the isovector- and isocalar-exchange magnetic form factors-neglecting the mixed symmetry S' state; (ii) the form factors
B. K. Srivastava, J. S. Levinger
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Form factors for electron scattering on 10B and 11B

Nuclear Physics A, 1978
Abstract The form factors for elastic scattering of electrons by 10 B and 11 B and the inelastic form factor to the 6.02 MeV level in 10 B are calculated with intermediate coupling wave functions in a projected Hartree-Fock basis. Good agreement with experiment is obtained.
M.C. Bouten, M. Bouten
openaire   +2 more sources

Paramagnetic form factors for cubic itinerant electron systems

Physical Review B, 1988
Measurements of the elastic neutron scattering cross section performed over the past several decades have provided information about the induced magnetic form factor for a number of transition-metal paramagnets. These results, when converted to an absolute scale, provide a sensitive test of electronic wave functions obtained from band calculations ...
S.H. Liu, Andrea J. Liu, J. F. Cooke
openaire   +3 more sources

Suppression of elastic magnetic electron scattering form factors

Physical Review C, 1985
Some recent experiments have reported a strong suppression of the M3 part of the elastic magnetic electron scattering in a number of light nuclei. We examine the effect of the first-order as well as second-order perturbative diagrams on the momentum-transfer dependence of the M1 and M3 form factors in the case of a closed f/sub 7/2/ shell plus a ...
B. Ghosh, S. K. Sharma
openaire   +3 more sources

X-ray form factors and the electronic structure of graphite

Physical Review B, 1982
The bonding and spectroscopic properties of graphite are investigated by carrying out first-principles, self-consistent electronic structure calculations, and by comparing the results with high-resolution data from recent x-ray diffraction and angle-resolved photoemission measurements.
Natalie Holzwarth   +2 more
openaire   +2 more sources

Thermal Optimization of Electronic Equipment: Form Factor Improvement

2009 Third UKSim European Symposium on Computer Modeling and Simulation, 2009
The need to have equipments with a low form factor, defined as depth divided by the width multiplied by the height, is very essential for a particular product to be marketable. Thus, when an old product needs to be customized to a new form factor, while maintaining the standardized components, there will be distorted thermal distribution. In this study,
Kahar Osman   +3 more
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Electron scattering form factors for fp-shell nuclei

Nuclear Physics A, 1985
Abstract Elastic and inelastic electron-scattering form factors for multipolarities up to L = 7 and some transition-strength distributions are calculated with shell-model wave functions for about ten target nuclei in the mass range A = 52–62. The results are compared with the available measured transition strengths and (e, e') form factors.
R.B.M. Mooy, P.W.M. Glaudemans
openaire   +2 more sources

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