scholarly journals Quantum gravitational corrections to the nonrelativistic scattering potential of two masses

2003 ◽  
Vol 67 (8) ◽  
Author(s):  
N. E. J. Bjerrum-Bohr ◽  
John F. Donoghue ◽  
Barry R. Holstein
Keyword(s):  
Scattering Potential ◽  
Nonrelativistic Scattering

Peculiar features of the deuteron scattering potential

1987 ◽  
Vol 188 (1) ◽  
pp. 17-20 ◽  
Author(s):  
M. Ermer ◽  
H. Clement ◽  
P. Grabmayr ◽  
G.J. Wagner ◽  
L. Friedrich ◽  
...  
Keyword(s):  
Deuteron Scattering ◽  
Scattering Potential

Sensitivity of Spin Polarization to Scattering Potential

1969 ◽  
Vol 22 (1) ◽  
pp. 1-3 ◽  
Author(s):  
A. C. Yates ◽  
M. Fink
Keyword(s):  
Spin Polarization ◽  
Scattering Potential

scholarly journals The Nonrelativistic Scattering States of the Deng-Fan Potential

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Bentol Hoda Yazarloo ◽  
Liangliang Lu ◽  
Guanghui Liu ◽  
Saber Zarrinkamar ◽  
Hassan Hassanabadi
Keyword(s):  
Approximation Scheme ◽  
Wave Functions ◽  
Energy Eigenvalues ◽  
Scattering States ◽  
Special Cases ◽  
Scattering State ◽  
Term Energy ◽  
Scattering Phase ◽  
Scattering Phase Shifts ◽  
Nonrelativistic Scattering

The approximately analytical scattering state solution of the Schrodinger equation is obtained for the Deng-Fan potential by using an approximation scheme to the centrifugal term. Energy eigenvalues, normalized wave functions, and scattering phase shifts are calculated. We consider and verify two special cases: thel=0and thes-wave Hulthén potential.

Crystallographic Origin of the Alternate Bright/Dark Contrast in 6H-SiC and other Hexagonal Crystal HREM Images

1996 ◽  
Vol 2 (2) ◽  
pp. 63-78
Author(s):  
J.S. Bow ◽  
R.W. Carpenter ◽  
M.J. Kim
Keyword(s):  
Crystal Thickness ◽  
Material System ◽  
Hrem Image ◽  
Hexagonal Crystal ◽  
Cubic Crystals ◽  
Unit Cells ◽  
Crystal Model ◽  
Scattering Potential ◽  
Diffraction Patterns ◽  
Image Simulations

Alternating bright/dark anomalous subunitcell contrast in HREM images along or near the close-packed direction of 6H-SiC, Ti5Si3, α-Ti, and 4H-SiC, all of which are hexagonal, was examined using computer-generated crystal models, HREM image simulations, and digital diffractograms from the corresponding experimental images. The primary variables were crystal tilt and thickness. Crystal model projections showed that the scattering potential was smeared anisotropically within the unit cells by small crystal tilts, which reproduced the experimentally observed anomalous subunit-cell contrast modulations in the corresponding simulations. The effect increased with thickness, but it did not occur in exact zone axis simulations for any crystal thickness. Structural considerations indicated that the contrast resulted from tilt-induced violations of Gjonnes-Moodie dynamical extinctions and excitation of kinematically forbidden reflections in the imaging zone. Digital diffractograms from experimental HREM images confirmed their presence in the imaging zone diffraction patterns. These effects were absent in HREM images from cubic crystals in this material system because the structurally induced requisite kinematically forbidden reflections do not occur in the imaging zone.

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