Neutron Total Cross Sections Between 20 and 45 MeV

1974 ◽  
Vol 52 (7) ◽  
pp. 648-654 ◽  
Author(s):  
I. F. Bubb ◽  
S. N. Bunker ◽  
M. Jain ◽  
J. W. Leonard ◽  
A. McIlwain ◽  
...  
Keyword(s):  
Energy Range ◽  
Energy Dependence ◽  
Cross Sections ◽  
Optical Model ◽  
Surface Absorption ◽  
Model Calculations ◽  
Total Cross Sections ◽  
Cu And Zn

Neutron total cross sections have been measured in the energy range of 20 to 45 MeV for Be, C, Al, Cu, and Zn. The typical accuracy was 1% to 2%. Results are compared with optical model calculations in which the only variable is the surface absorption strength, which is constrained to vary with a linear energy dependence. The calculation is extended to include 13 nuclei with A < 75.

scholarly journals Energy Dependence of Total Cross Sections for Reactions with 4, 6he, 6, 7, 9li Nuclei

KnE Energy ◽  
2018 ◽  
Vol 3 (1) ◽  
pp. 21
Author(s):  
Yu Penionzhkevich ◽  
Yu Sobolev ◽  
V Samarin ◽  
M Naumenko
Keyword(s):  
Experimental Data ◽  
Energy Range ◽  
Numerical Solution ◽  
Energy Dependence ◽  
Cross Sections ◽  
Beam Energy ◽  
Microscopic Analysis ◽  
Time Dependent ◽  
Total Cross Sections ◽  
Good Agreement

The paper presents the results of measurement of the total cross sections for reactions 4,6He + Si and 6,7,9Li + Si in the beam energy range 5−50 A⋅MeV. The enhancements of the total cross sections for reaction 6He + Si compared with reaction 4He + Si, and 9Li + Si compared with reactions 6,7Li + Si have been observed. The performed microscopic analysis of total cross sections for reactions 6He + Si and 9Li + Si based on numerical solution of the time-dependent Schrödinger equation for external neutrons of projectile nuclei 6He and 9Li yielded good agreement with experimental data.

Role of inelastic couplings in the 4He + 208Pb elastic scattering in a wide energy range

2021 ◽  
Author(s):  
Luiz Carlos Chamon ◽  
Leandro Romero Gasques ◽  
Juan Carlos Zamora Cardona
Keyword(s):  
Elastic Scattering ◽  
Energy Range ◽  
Energy Dependence ◽  
Cross Sections ◽  
Optical Model ◽  
Nucleon Nucleon ◽  
Scattering Data ◽  
Wide Energy Range ◽  
Data Analyses ◽  
Wide Energy

Abstract The phenomenological strengths of the real part of the optical potential, obtained from elastic scattering data analyses within the optical model approach, present significant energy-dependence. This behavior has been associated to the intrinsic energy-dependence of the effective nucleon-nucleon interaction. However, in earlier works, we proposed that at least part of this dependence can arise from the effect of couplings to inelastic states of the nuclei. In order to deepen this study, in this paper we present extensive data analyses for the elastic scattering and inelastic excitation of 111 states of 208Pb, for the 4He + 208Pb system in a wide energy range. With the purpose of comparison, the theoretical cross sections are obtained in different approaches for the imaginary part of the potential, and within both contexts: optical model (distorted wave Born approximation) and coupled-channel calculations.

Microscopic optical-model calculations of neutron total cross sections and cross section differences

1989 ◽  
Vol 39 (5) ◽  
pp. 1725-1729 ◽  
Author(s):  
H. S. Camarda ◽  
F. S. Dietrich ◽  
T. W. Phillips
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Optical Model ◽  
Model Calculations ◽  
Total Cross Sections

Neutron total cross sections in the energy range 80 to 150 MeV

1966 ◽  
Vol 85 (1) ◽  
pp. 129-141 ◽  
Author(s):  
D.F. Measday ◽  
J.N. Palmieri
Keyword(s):  
Energy Range ◽  
Cross Sections ◽  
Total Cross Sections

scholarly journals ENERGY DEPENDENCE OF TOTAL CROSS SECTIONS FOR REACTIONS WITH 6He, 6,9Li NUCLEI

Exotic Nuclei ◽  
2017 ◽  
Author(s):  
Yu. E. Penionzhkevich ◽  
Yu. G. Sobolev ◽  
V. V. Samarin ◽  
M. A. Naumenko
Keyword(s):  
Energy Dependence ◽  
Cross Sections ◽  
Total Cross Sections

Energy dependence of nucleon-nucleon inelastic total cross-sections

1987 ◽  
Vol 48 (11) ◽  
pp. 1901-1924 ◽  
Author(s):  
J. Bystricky ◽  
P. La France ◽  
F. Lehar ◽  
F. Perrot ◽  
T. Siemiarczuk ◽  
...  
Keyword(s):  
Energy Dependence ◽  
Cross Sections ◽  
Nucleon Nucleon ◽  
Total Cross Sections

scholarly journals Statistical model calculations of 72,73Ge(n,p) and 72,74Ge(n,α) reactions on natural Ge

2020 ◽  
Vol 15 ◽  
pp. 104
Author(s):  
S. Galanopoulos ◽  
R. Vlastou ◽  
P. Demetriou ◽  
M. Kokkoris ◽  
C. T. Papadopoulos ◽  
...  
Keyword(s):  
Statistical Model ◽  
Energy Range ◽  
Neutron Energy ◽  
Cross Sections ◽  
Reaction Cross ◽  
Model Calculations ◽  
Monoenergetic Neutron ◽  
Theoretical Investigations ◽  
Equilibrium Emission ◽  
Reaction Cross Sections

Systematic experimental and theoretical investigations of the 72,73Ge(n,p)72,73 Ga and 72,74Ge(n,α)69,71Znm reaction cross sections are presented in the energy range from thresh- old to about 17 MeV neutron energy. The above reaction cross sections were measured from 8.8 to 11.4 MeV by using the activation method, relative to the 27Al(n,α)24Na refer- ence reaction. The quasi-monoenergetic neutron beams were produced via the 2H(d,n)3He reaction at the 5 MV VdG Tandem T11/25 accelerator of NCSR “Demokritos”. Statisti- cal model calculations using the code EMPIRE-II (version 2.19) taking into consideration pre-equilibrium emission were performed on the data measured in this work as well as on data reported in literature.

DOUBLE PION PHOTOPRODUCTION EXPERIMENT AT LNS–TOHOKU

2008 ◽  
Vol 23 (27n30) ◽  
pp. 2313-2316 ◽  
Author(s):  
◽  
H. KANDA ◽  
N. CHIGA ◽  
Y. FUJII ◽  
K. FUTATSUKAWA ◽  
...  
Keyword(s):  
Total Cross Section ◽  
Energy Range ◽  
Cross Section ◽  
Cross Sections ◽  
Pion Photoproduction ◽  
Total Cross Sections ◽  
Free Proton ◽  
Double Pion ◽  
The Cross

The total cross sections for the π+π− photoproduction on the deuteron were measured in an energy range of 0.8 to 1.1 GeV. The obtained total cross section for the quasi-free π+π− photoproduction on the deuteron was about 60 % of those on the free proton. The cross section for Δ++Δ− photoproduction was derived from the non-quasi-free π+π− photoproduction events. It was smaller than the previous data.

Microscopic analysis of the energy dependence of the 6He, 6Li + 28Si total reaction cross sections in the energy range E = 5−50 A MeV

2008 ◽  
Vol 72 (3) ◽  
pp. 356-360
Author(s):  
K. V. Lukyanov ◽  
E. V. Zemlyanaya ◽  
V. K. Lukyanov ◽  
I. N. Kukhtina ◽  
Yu. E. Penionzhkevich ◽  
...  
Keyword(s):  
Energy Range ◽  
Energy Dependence ◽  
Cross Sections ◽  
Microscopic Analysis ◽  
Reaction Cross ◽  
Total Reaction ◽  
Reaction Cross Sections
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