scholarly journals Non-monotonic potential description of the cross-section, vector and tensor analyzing powers of the 6Li+12C elastic scattering at 30 and 50 MeV†

2021 ◽  
Vol 1718 ◽  
pp. 012007
Author(s):  
Athoy Nilima ◽  
S Hossain ◽  
M M B Azad ◽  
M M Billah ◽  
A S B Tariq ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Cross Section ◽  
Potential Description ◽  
Analyzing Powers ◽  
The Cross

Z Dependence of Electron Scattering by Single Atoms into Annular Dark-Field Detectors

2011 ◽  
Vol 17 (6) ◽  
pp. 847-858 ◽  
Author(s):  
Michael M.J. Treacy
Keyword(s):  
Elastic Scattering ◽  
Inelastic Scattering ◽  
Cross Section ◽  
Electron Scattering ◽  
Dark Field ◽  
Single Atom ◽  
Single Atoms ◽  
Annular Dark Field ◽  
Annular Detector ◽  
The Cross

AbstractA simple parameterization is presented for the elastic electron scattering cross sections from single atoms into the annular dark-field (ADF) detector of a scanning transmission electron microscope (STEM). The dependence on atomic number, Z, and inner reciprocal radius of the annular detector, q0, of the cross section σ(Z,q0) is expressed by the empirical relationwhere A(q0) is the cross section for hydrogen (Z = 1), and the detector is assumed to have a large outer reciprocal radius. Using electron elastic scattering factors determined from relativistic Hartree-Fock simulations of the atomic electron charge density, values of the exponent n(Z,q0) are tabulated as a function of Z and q0, for STEM probe sizes of 1.0 and 2.0 Å.Comparison with recently published experimental data for single-atom scattering [Krivanek et al. (2010). Nature464, 571–574] suggests that experimentally measured exponent values are systematically lower than the values predicted for elastic scattering from low-Z atoms. It is proposed that this discrepancy arises from the inelastic scattering contribution to the ADF signal. A simple expression is proposed that corrects the exponent n(Z,q0) for inelastic scattering into the annular detector.

scholarly journals Investigation of the cross section for dd elastic scattering and dd→nHe3 reactions at 160 MeV

2019 ◽  
Vol 99 (1) ◽  
Author(s):  
I. Ciepał ◽  
J. Kuboś ◽  
K. Bodek ◽  
N. Kalantar-Nayestanaki ◽  
G. Khatri ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Cross Section ◽  
The Cross

Quantal inversion of the cross section for the elastic scattering of 200 MeV protons fromC12

1994 ◽  
Vol 49 (4) ◽  
pp. 2177-2181 ◽  
Author(s):  
L. J. Allen ◽  
K. Amos ◽  
P. J. Dortmans
Keyword(s):  
Elastic Scattering ◽  
Cross Section ◽  
The Cross ◽  
Mev Protons

Small Angle Elastic Scattering of 4.3 MeV Neutrons From U, Bi, and Pb

1973 ◽  
Vol 51 (20) ◽  
pp. 2197-2201 ◽  
Author(s):  
P. W. Martin ◽  
R. McFadden ◽  
B. L. White
Keyword(s):  
Elastic Scattering ◽  
Satisfactory Agreement ◽  
Cross Section ◽  
Cross Sections ◽  
Small Angle ◽  
Differential Cross ◽  
Optical Model ◽  
Differential Cross Sections ◽  
Electromagnetic Interactions ◽  
The Cross

The differential cross sections for 4.3 MeV neutrons elastically scattered from natural samples of U, Bi, and Pb have been measured at laboratory angles of 5, 10, and 15°. In the case of uranium, the data are consistent with calculations based on the nuclear optical model and known electromagnetic interactions. Less satisfactory agreement to the data is obtained in the cross section measurements for lead and bismuth.

Elastic Scattering of Electrons and Positrons by Screened Nuclei

1966 ◽  
Vol 21 (9) ◽  
pp. 1321-1327 ◽  
Author(s):  
Elmar Zeitler ◽  
Haakon Olsen
Keyword(s):  
Elastic Scattering ◽  
Cross Section ◽  
Cross Sections ◽  
Relativistic Effects ◽  
The Other ◽  
Elastic Electron ◽  
Positron Scattering ◽  
Electrons And Positrons ◽  
Two Factors ◽  
The Cross

Results of calculations of cross sections for elastic electron and positron scattering are given in angular steps of 15 degrees for elements Z=6, 13, 29, 50, 82, and 92 and energies T=0.2, 0.4, 0.7, 1, 2, 4, and 10 MeV. The calculation is based on the separability of the cross section into two factors, one describing screening and the other, spin and relativistic effects. The first factor is obtained by the MOLIÈRE approximation 8. The second factor is taken from a paper by DOGGETT and SPENCER 5. Different screening potentials for Z=29 were applied.

νee(elastic) from LSND

2001 ◽  
Vol 16 (supp01b) ◽  
pp. 749-751
Author(s):  
ADAM MALIK
Keyword(s):  
Elastic Scattering ◽  
Cross Section ◽  
Liquid Scintillator ◽  
Neutral Current ◽  
Interference Term ◽  
Charged Current ◽  
Destructive Interference ◽  
Neutrino Detector ◽  
Electron Neutrinos ◽  
The Cross

A measurement of the cross section for the elastic scattering of electron neutrinos on electrons was performed using the data collected with the Liquid Scintillator Neutrino Detector (LSND) at LANL. This cross section was calculated to be (10.0±1.1±1.1)× E ν×10-45 cm 2 and is used to determine the destructive interference term between the neutral-current and charged-current interactions for this reaction.

16O–16O ELASTIC SCATTERING AT 350 MeV AND POLE STRUCTURE OF THE S-MATRIX

1998 ◽  
Vol 13 (03) ◽  
pp. 211-217 ◽  
Author(s):  
V. V. PILIPENKO
Keyword(s):  
Elastic Scattering ◽  
Cross Section ◽  
Matrix Model ◽  
Regge Pole ◽  
S Matrix ◽  
Pole Structure ◽  
The Cross

The cross-section of the 16 O –16 O elastic scattering at 350 MeV including rainbow-like structures has been described on the basis of an original S-matrix model taking account of the effect of a Regge pole in the first quadrant of the complex l-plane.

scholarly journals A comprehensive analysis of differential cross sections and analyzing powers in the proton–deuteron break-up channel at 135 MeV

2021 ◽  
Vol 57 (2) ◽  
Author(s):  
H. Tavakoli-Zaniani ◽  
M. Eslami-Kalantari ◽  
H. R. Amir-Ahmadi ◽  
M. T. Bayat ◽  
A. Deltuva ◽  
...  
Keyword(s):  
Experimental Data ◽  
Cross Section ◽  
Cross Sections ◽  
Theoretical Calculations ◽  
Nucleon Force ◽  
Satisfactory Description ◽  
Analyzing Powers ◽  
Global Comparison ◽  
Break Up ◽  
The Cross

AbstractA selection of measured cross sections and vector analyzing powers, $$A_{x}$$ A x and $$A_{y}$$ A y , are presented for the $$\vec {p}{d}$$ p → d break-up reaction. The data are taken with a polarized proton beam with a kinetic energy of 135 MeV using the Big Instrument for Nuclear-polarization Analysis (BINA) at KVI, the Netherlands. With this setup, $$A_{x}$$ A x is extracted for the first time for a large range of energies as well as polar and azimuthal angles of the two outgoing protons. For most of the configurations, the results at small and large relative azimuthal angles differ in behavior when comparing experimental data with the theoretical calculations. We also performed a more global comparison of our data with theoretical calculations. The cross-section results show huge values of $$\chi ^{2}$$ χ 2 /d.o.f.. The absolute values of $$\chi ^{2}$$ χ 2 /d.o.f. for the components of vector analyzing powers, $$A_{x}$$ A x and $$A_{y}$$ A y , are smaller than the ones for the cross section, partly due to larger uncertainties for these observables. However, also for these observables no satisfactory agreement is found for all angular combinations. This implies that the present models of a three-nucleon force are not able to provide a satisfactory description of experimental data.

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