Statistical Analysis of Fast Neutron Total Cross Sections of Silicon, Phosphor, Sulfur, and Chlorine

1963 ◽  
Vol 18 (5) ◽  
pp. 610-619 ◽  
Author(s):  
Kineo Tsukada ◽  
Osamu Tanaka
Keyword(s):  
Statistical Analysis ◽  
Fast Neutron ◽  
Cross Sections ◽  
Total Cross Sections

Measurement of Fast Neutron Total Cross Sections on natTa and natBi at MeV Energy Range

2011 ◽  
Vol 59 (3) ◽  
pp. 2233-2236 ◽  
Author(s):  
Gi Dong Kim ◽  
Hyung Joo Woo ◽  
Tae Keun Yang ◽  
Sam Yoel Lee ◽  
Young Ook Lee
Keyword(s):  
Energy Range ◽  
Fast Neutron ◽  
Cross Sections ◽  
Total Cross Sections

Fast-neutron-scattering cross sections in soft nuclei: 56Fe

1994 ◽  
Vol 72 (3-4) ◽  
pp. 162-168
Author(s):  
R. Cabezas ◽  
J. Lubian
Keyword(s):  
Experimental Data ◽  
Energy Range ◽  
Neutron Scattering ◽  
Fast Neutron ◽  
Cross Sections ◽  
Matrix Elements ◽  
Total Cross Sections ◽  
Coupled Channel ◽  
Scattering Cross Sections ◽  
Good Agreement

The neutron elastic, inelastic, and total cross sections in 56Fe are calculated in the energy range 1–5 MeV using the coupled-channel method and statistical Hauser–Feshbach theory. Reduced matrix elements for coupled-channel calculations were computed in the frame of the Davydov–Chaban model (DCM) including nonaxial hexadecapole modes. The DCM calculations are compared with those using the harmonic vibrational model and we prove that the first model is appropriate for this nucleus. Good agreement with experimental data is reached.

Measurement of Fast Neutron Total Cross Sections

1957 ◽  
Vol 28 (2) ◽  
pp. 89-92 ◽  
Author(s):  
L. Cranberg ◽  
R. K. Beauchamp ◽  
J. S. Levin
Keyword(s):  
Fast Neutron ◽  
Cross Sections ◽  
Total Cross Sections

?Measurement of Fast Neutron Total Cross Sections on O, Si, and SiO2

2010 ◽  
Vol 57 (3) ◽  
pp. 424-439
Author(s):  
Gi-Dong Kim ◽  
Han-Woo Choi ◽  
Hyung-Joo Woo ◽  
Wan Hong
Keyword(s):  
Fast Neutron ◽  
Cross Sections ◽  
Total Cross Sections

Analysis of STEM micrographs of thick objects

1978 ◽  
Vol 36 (2) ◽  
pp. 106-107
Author(s):  
S. Golladay
Keyword(s):  
Inelastic Scattering ◽  
Multiple Scattering ◽  
Mass Distribution ◽  
Cross Sections ◽  
Phase Contrast ◽  
Image Point ◽  
Contrast Effects ◽  
Total Cross Sections ◽  
Elastic And Inelastic Scattering

The theory of multiple scattering has been worked out by Groves and comparisons have been made between predicted and observed signals for thick specimens observed in a STEM under conditions where phase contrast effects are unimportant. Independent measurements of the collection efficiencies of the two STEM detectors, calculations of the ratio σe/σi = R, where σe, σi are the total cross sections for elastic and inelastic scattering respectively, and a model of the unknown mass distribution are needed for these comparisons. In this paper an extension of this work will be described which allows the determination of the required efficiencies, R, and the unknown mass distribution from the data without additional measurements or models. Essential to the analysis is the fact that in a STEM two or more signal measurements can be made simultaneously at each image point.

scholarly journals Total cross sections of eγ → $$ eX\overline{X} $$ processes with X = μ, γ, e via multiloop methods

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Roman N. Lee ◽  
Alexey A. Lyubyakin ◽  
Vyacheslav A. Stotsky
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Elliptic Integral ◽  
High Energy ◽  
Calculation Methods ◽  
Complete Elliptic Integral ◽  
Total Cross Sections ◽  
Multiloop Calculation ◽  
The Cross ◽  
Analytical Expressions

Abstract Using modern multiloop calculation methods, we derive the analytical expressions for the total cross sections of the processes e−γ →$$ {e}^{-}X\overline{X} $$ e − X X ¯ with X = μ, γ or e at arbitrary energies. For the first two processes our results are expressed via classical polylogarithms. The cross section of e−γ → e−e−e+ is represented as a one-fold integral of complete elliptic integral K and logarithms. Using our results, we calculate the threshold and high-energy asymptotics and compare them with available results.

Positronium- and positron–H2O total cross sections

2006 ◽  
Vol 39 (6) ◽  
pp. 1337-1344 ◽  
Author(s):  
J Beale ◽  
S Armitage ◽  
G Laricchia
Keyword(s):  
Cross Sections ◽  
Total Cross Sections
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