Optical-Model and Distorted-Wave Analyses of Some 18-MeV Alpha-Particle Scattering Cross Sections forAr40,S32,P31,Na23, andNe20

1966 ◽  
Vol 144 (3) ◽  
pp. 972-979 ◽  
Author(s):  
B. T. Lucas ◽  
S. W. Cosper ◽  
O. E. Johnson
Keyword(s):  
Cross Sections ◽  
Alpha Particle ◽  
Optical Model ◽  
Particle Scattering ◽  
Distorted Wave ◽  
Scattering Cross ◽  
Scattering Cross Sections

Particle scattering by rotating trapped quantum gases at finite temperature

2021 ◽  
Author(s):  
Samir Das ◽  
Shyamal Biswas
Keyword(s):  
Cross Sections ◽  
Fermi Gas ◽  
Bose Gas ◽  
Einstein Condensate ◽  
Harmonic Trap ◽  
Quantum Gases ◽  
Scattering Method ◽  
Particle Scattering ◽  
Scattering Cross ◽  
Scattering Cross Sections

Abstract We have analytically explored the quantum phenomena of particle scattering by rotating trapped quantum gases of electrically neutral bosons and fermions for the short-ranged Fermi-Huang interactions between the incident particle and the scatterers. We have predicted differential scattering cross-sections and their temperature and angular velocity dependencies in this regard, in particular, for an ideal Bose gas in a rotating harmonic trap, an ideal Fermi gas in a rotating harmonic trap, and a weakly interacting Bose gas in a slow rotating harmonic trap. We have theoretically probed the lattice-pattern of the vortices in a rapidly rotating strongly interacting Bose-Einstein condensate by the particle scattering method. We also have obtained de Haas-van Alphen-like oscillations in the differential scattering cross-section for an ideal ultracold Fermi gas in a rotating harmonic trap. Our predictions on the differential scattering cross-sections can be tested within the present-day experimental setups.

Fast neutron scattering cross sections at small angles and optical model parameters

1993 ◽  
Vol 48 (4) ◽  
pp. 1779-1784
Author(s):  
Qi Huiquan ◽  
Chen Yingtang ◽  
Chen Qiankun ◽  
Chen Zhenpeng ◽  
Chen Zemin
Keyword(s):  
Neutron Scattering ◽  
Fast Neutron ◽  
Cross Sections ◽  
Optical Model ◽  
Model Parameters ◽  
Scattering Cross ◽  
Scattering Cross Sections

Absolute inner-shell cross section determination for EELS analysis

1988 ◽  
Vol 46 ◽  
pp. 534-535
Author(s):  
P.A. Crozier
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Absolute Cross Section ◽  
Specimen Thickness ◽  
Mass Thickness ◽  
Scattering Cross ◽  
Before And After ◽  
Estimated Error ◽  
Scattering Cross Sections ◽  
Electron Microscopist

Absolute inelastic scattering cross sections or mean free paths are often used in EELS analysis for determining elemental concentrations and specimen thickness. In most instances, theoretical values must be used because there have been few attempts to determine experimental scattering cross sections from solids under the conditions of interest to electron microscopist. In addition to providing data for spectral quantitation, absolute cross section measurements yields useful information on many of the approximations which are frequently involved in EELS analysis procedures. In this paper, experimental cross sections are presented for some inner-shell edges of Al, Cu, Ag and Au.Uniform thin films of the previously mentioned materials were prepared by vacuum evaporation onto microscope cover slips. The cover slips were weighed before and after evaporation to determine the mass thickness of the films. The estimated error in this method of determining mass thickness was ±7 x 107g/cm2. The films were floated off in water and mounted on Cu grids.

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