A hybrid model description of 13C(p,γ)14N capture reaction

The radiative capture reaction [Formula: see text] is analyzed using a hybrid model approach where the non-resonant component has been constructed employing the potential model with a folded M3Y potential. The one-level Breit–Wigner formula has been used to estimate the cross-sections of the resonant decays of dominant ([Formula: see text]) state of [Formula: see text]N at 8.06[Formula: see text]MeV. The contribution of the broad resonance at 8.77[Formula: see text]MeV ([Formula: see text]) has been dealt with differently. While Breit–Wigner formula has been used where the excitation function data exist, the [Formula: see text]-matrix prediction for the cross-section of decay to a bound state of [Formula: see text]N from the broad resonance has been used where excitation function data are not available. The single particle spectroscopic factors for ground and six excited states of [Formula: see text]N have been obtained from the fits. The resulting astrophysical [Formula: see text]-factor at zero relative energy is [Formula: see text][Formula: see text]keV b. The value is in good agreement with the previously reported [Formula: see text]-matrix result and also consistent within error bars with the published values.

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Deuteron Capture by Deuterons and the Structure of 4He

Australian Journal of Physics ◽

10.1071/ph620059 ◽

1962 ◽

Vol 15 (1) ◽

pp. 59 ◽

Cited By ~ 6

Author(s):

LM Delves

Keyword(s):

Elastic Scattering ◽

Cross Sections ◽

Scattering Matrix ◽

Bound State ◽

Low Energy ◽

Scattering Parameters ◽

Scattering States ◽

The Cross

The four-body scattering matrix describing the various scattering states of two protons and two neutrons is analysed to see what information can be gained on the structure of the bound state, 4He. It is found that an estimate can be given of the fraction of time that 'He appears as two deuterons; this estimate is� in turn used to calculate the cross sections for the process d(d, y)'He. The low energy n-3He singlet elastic scattering parameters appear to be fairly well determined by the data studied.

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Optical-Model Analysis of Excitation Function Data and Theoretical Reaction Cross Sections for Alpha Particles

Physical Review ◽

10.1103/physrev.115.1665 ◽

1959 ◽

Vol 115 (6) ◽

pp. 1665-1674 ◽

Cited By ~ 267

Author(s):

George Igo

Keyword(s):

Excitation Function ◽

Cross Sections ◽

Optical Model ◽

Model Analysis ◽

Reaction Cross ◽

Alpha Particles ◽

Function Data ◽

Optical Model Analysis ◽

Reaction Cross Sections

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The cross sections for different channels in heavy ion nuclear reactions

Journal de Physique ◽

10.1051/jphys:019710032010700 ◽

1971 ◽

Vol 32 (1) ◽

pp. 7-9 ◽

Cited By ~ 21

Author(s):

J. Galin ◽

D. Guerreau ◽

M. Lefort ◽

X. Tarrago

Keyword(s):

Cross Sections ◽

Nuclear Reactions ◽

Heavy Ion ◽

The Cross

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Experimental Studies Of Multilayer Glass Structures On Compression, Compression With Bending And Simple Bending

Promyshlennoe i Grazhdanskoe Stroitel stvo ◽

10.33622/0869-7019.2019.01.22-30 ◽

2019 ◽

pp. 22-30

Keyword(s):

Cross Section ◽

Cross Sections ◽

Applied Load ◽

Experimental Studies ◽

Strength Properties ◽

Research Topic ◽

Normative Values ◽

Laminated Glass ◽

The Cross ◽

Experimental Values

The work of multilayer glass structures for central and eccentric compression and bending are considered. The substantiation of the chosen research topic is made. The description and features of laminated glass for the structures investigated, their characteristics are presented. The analysis of the results obtained when testing for compression, compression with bending, simple bending of models of columns, beams, samples of laminated glass was made. Overview of the types and nature of destruction of the models are presented, diagrams of material operation are constructed, average values of the resistance of the cross-sections of samples are obtained, the table of destructive loads is generated. The need for development of a set of rules and guidelines for the design of glass structures, including laminated glass, for bearing elements, as well as standards for testing, rules for assessing the strength, stiffness, crack resistance and methods for determining the strength of control samples is emphasized. It is established that the strength properties of glass depend on the type of applied load and vary widely, and significantly lower than the corresponding normative values of the strength of heat-strengthened glass. The effect of the connecting polymeric material and manufacturing technology of laminated glass on the strength of the structure is also shown. The experimental values of the elastic modulus are different in different directions of the cross section and in the direction perpendicular to the glass layers are two times less than along the glass layers.

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State selected ion–molecule reactions by a TESICO technique. IX. Vibrational state dependence of the cross sections in the reaction C2H+2(ν2)+D2(H2)

The Journal of Chemical Physics ◽

10.1063/1.447618 ◽

1984 ◽

Vol 81 (12) ◽

pp. 5666-5671 ◽

Cited By ~ 17

Author(s):

K. Honma ◽

Tatsuhisa Kato ◽

Kenichiro Tanaka ◽

Inosuke Koyano

Keyword(s):

Cross Sections ◽

Vibrational State ◽

State Dependence ◽

Ion Molecule Reactions ◽

The Cross

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

Journal of High Energy Physics ◽

10.1007/jhep01(2021)144 ◽

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.

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Asymptotic Behavior of Stable Structures Made of Beams

Journal of Elasticity ◽

10.1007/s10659-021-09816-w ◽

2021 ◽

Author(s):

Georges Griso ◽

Larysa Khilkova ◽

Julia Orlik ◽

Olena Sivak

Keyword(s):

Asymptotic Behavior ◽

Cross Section ◽

Cross Sections ◽

Linear Elasticity ◽

Circular Cross Section ◽

Linear Elasticity Theory ◽

Linear Elastic ◽

The Cross ◽

Small Rotation ◽

Stable Structures

AbstractIn this paper, we study the asymptotic behavior of an $\varepsilon $ ε -periodic 3D stable structure made of beams of circular cross-section of radius $r$ r when the periodicity parameter $\varepsilon $ ε and the ratio ${r/\varepsilon }$ r / ε simultaneously tend to 0. The analysis is performed within the frame of linear elasticity theory and it is based on the known decomposition of the beam displacements into a beam centerline displacement, a small rotation of the cross-sections and a warping (the deformation of the cross-sections). This decomposition allows to obtain Korn type inequalities. We introduce two unfolding operators, one for the homogenization of the set of beam centerlines and another for the dimension reduction of the beams. The limit homogenized problem is still a linear elastic, second order PDE.

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ISOSPIN DECOMPOSITION OF pp → NNππ CROSS SECTIONS — DO WE SEE A SIGN OF Δ(1600) EXCITATION IN THE nnπ+π+ CHANNEL?

International Journal of Modern Physics A ◽

10.1142/s0217751x09043821 ◽

2009 ◽

Vol 24 (02n03) ◽

pp. 450-453

Author(s):

◽

T. SKORODKO ◽

M. BASHKANOV ◽

D. BOGOSLOWSKY ◽

H. CALÉN ◽

...

Keyword(s):

Cross Section ◽

Cross Sections ◽

Differential Cross ◽

Pion Production ◽

Significant Contribution ◽

Differential Cross Sections ◽

Pp Collisions ◽

Theoretical Predictions ◽

Order Of Magnitude ◽

The Cross

The two-pion production in pp-collisions has been investigated in exclusive measurements from threshold up to Tp = 1.36 GeV . Total and differential cross sections have been obtained for the channels pnπ+π0, ppπ+π-, ppπ0π0 and also nnπ+π+. For intermediate incident energies Tp > 1 GeV , i.e. in the region, which is beyond the Roper excitation but at the onset of ΔΔ excitation the total ppπ0π0 cross section falls behind theoretical predictions by as much as an order of magnitude near 1.2 GeV, whereas the nnπ+π+ cross section is a factor of five larger than predicted. A model-unconstrained isospin decompostion of the cross section points to a significant contribution of an isospin 3/2 resonance other than the Δ(1232). As a possible candidate the Δ(1600) is discussed.

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