scholarly journals Recommended Positron Scattering Cross Sections for Atomic Systems

2019 ◽  
Vol 48 (2) ◽  
pp. 023102 ◽  
Author(s):  
Kuru Ratnavelu ◽  
Michael J. Brunger ◽  
Stephen J. Buckman
Keyword(s):  
Cross Sections ◽  
Positron Scattering ◽  
Atomic Systems ◽  
Scattering Cross ◽  
Scattering Cross Sections

scholarly journals Positron interactions with nitrogen and oxygen molecules: elastic, inelastic and total cross sections

2019 ◽  
Vol 73 (12) ◽  
Author(s):  
Lilian Ellis-Gibbings ◽  
Francisco Blanco ◽  
Gustavo García
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Impact Energy ◽  
Optical Theorem ◽  
Calculation Methods ◽  
Positron Scattering ◽  
Total Cross Sections ◽  
Scattering Cross ◽  
Simple Molecules ◽  
Scattering Cross Sections

Abstract Positron scattering cross sections, used for modelling particle transport in various media, are difficult to gather experimentally. As such, various cross section calculation methods have been developed to varying accuracy. The IAM-SCAR+I method has been improved upon recently to fulfil the optical theorem and the results for two important simple molecules, N2 and O2, are presented here. These results are compared to literature and our findings are comparable in most impact energy ranges. Graphical abstract

scholarly journals Comparison of inelastic electron and positron scattering cross sections on 12C and 27Al

1979 ◽  
Vol 82 (2) ◽  
pp. 297-300 ◽  
Author(s):  
S. Hartwig ◽  
F.H. Heimlich ◽  
G. Huber ◽  
E. Rössle ◽  
J. Bleckwenn ◽  
...  
Keyword(s):  
Cross Sections ◽  
Inelastic Electron ◽  
Positron Scattering ◽  
Scattering Cross ◽  
Scattering Cross Sections

Quantum Effect on Collisions in Electron-positron Plasmas

2001 ◽  
Vol 56 (11) ◽  
pp. 713-716
Author(s):  
Young-Dae Jung
Keyword(s):  
Cross Sections ◽  
Quantum Effect ◽  
Plasma Temperature ◽  
Quantum Effects ◽  
High Energy ◽  
Positron Scattering ◽  
Scattering Cross ◽  
Electron Positron ◽  
De Broglie Wavelength ◽  
Scattering Cross Sections

Abstract Quantum effects on the electron-positron scattering are investigated in electron-positron plasmas. The corrected Kelbg potential, taking into account the quantum effects, is applied to describe the electron-positron interaction potential in electron-positron plasmas. The Bom approximation is considered to obtain high-energy electron-positron scattering cross sections. The results show that the differential electron-positron scattering cross sections increase with increasing thermal de Broglie wavelength, i.e., decreasing plasma temperature. The differential electron-positron scattering cross sections decreases with increasing collision energy. It is also found that the quantum effects on the differential scattering cross section are small for forward and backward scattering angles.

Electron and positron scattering cross sections for propene

2018 ◽  
Vol 124 (3) ◽  
pp. 034901 ◽  
Author(s):  
Suvam Singh ◽  
Dhanoj Gupta ◽  
Bobby Antony
Keyword(s):  
Cross Sections ◽  
Positron Scattering ◽  
Scattering Cross ◽  
Scattering Cross Sections

Electron and positron scattering cross sections for propene and cyclopropane

2008 ◽  
Vol 77 (4) ◽  
Author(s):  
C. Makochekanwa ◽  
M. Hoshino ◽  
H. Kato ◽  
O. Sueoka ◽  
M. Kimura ◽  
...  
Keyword(s):  
Cross Sections ◽  
Positron Scattering ◽  
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.

scholarly journals Towards fully nonperturbative computations of inelastic ℓN scattering cross sections from lattice QCD

2020 ◽  
Vol 102 (11) ◽  
Author(s):  
Hidenori Fukaya ◽  
Shoji Hashimoto ◽  
Takashi Kaneko ◽  
Hiroshi Ohki
Keyword(s):  
Lattice Qcd ◽  
Cross Sections ◽  
Scattering Cross ◽  
Scattering Cross Sections

scholarly journals Combining ADF-EDX scattering cross-sections for elemental quantification of nanostructures

2021 ◽  
Vol 27 (S1) ◽  
pp. 600-602
Author(s):  
Zezhong Zhang ◽  
Annick De Backer ◽  
Ivan Lobato ◽  
Sandra Van Aert ◽  
Peter Nellist
Keyword(s):  
Cross Sections ◽  
Scattering Cross ◽  
Scattering Cross Sections
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