scholarly journals Direct reaction contribution in the very low-energy 19F(p,α0) reaction

2021 ◽  
Author(s):  
Lalit Kumar Sahoo ◽  
Chinmay Basu
Keyword(s):  
Cluster Structure ◽  
Low Energy ◽  
Direct Reaction ◽  
Direct Component ◽  
S Factor ◽  
Strong Cluster ◽  
Reaction Component

The direct reaction component of the [Formula: see text]F([Formula: see text]) reaction at [Formula: see text][Formula: see text]keV is studied for the data that became very recently available. This component is significant in this work using the direct pickup model in the framework of the DWBA formalism and indicate the strong cluster structure of [Formula: see text]F. The direct component of astrophysical S-factor is calculated for [Formula: see text]F([Formula: see text]).

Direct reaction of nucleon cluster substitution and cluster structure of light nuclei

1964 ◽  
Vol 60 (2) ◽  
pp. 305-312 ◽  
Author(s):  
P. Beregi ◽  
V.G. Neudatchin ◽  
Yu.F. Smirnov
Keyword(s):  
Cluster Structure ◽  
Light Nuclei ◽  
Direct Reaction

Cluster structure of a low-energy resonance in tetraneutron

2008 ◽  
Vol 71 (2) ◽  
pp. 209-214 ◽  
Author(s):  
Yu. A. Lashko ◽  
G. F. Filippov
Keyword(s):  
Cluster Structure ◽  
Low Energy ◽  
Energy Resonance

Radiative capture of proton by 9Be(p, γ)10B at low energy.

2022 ◽  
Author(s):  
Abdul Kabir ◽  
Jameel-Un Nabi
Keyword(s):  
Cross Section ◽  
Capture Cross Section ◽  
Radiative Capture ◽  
Potential Model ◽  
Low Energy ◽  
Capture Cross ◽  
Zero Energy ◽  
R Matrix ◽  
S Factor ◽  
Radiative Capture Cross Section

Abstract Radiative capture p+9Be → 10B+γ at energies bearing astrophysical importance is a key process for the spectroscopic study of 10B. In this work, we consider the radiative capture cross-section for the 9Be(p, γ)10B within the framework of the potential model and the R-matrix method for the multi-entrance channel cases. In certain cases, when the potential fails, therefore, the R-matrix approach is better to use for the description of partial components of the cross-section that have sharp or broad resonances. For all possible electric and magnetic dipole transitions, partial components of the astrophysical S-factor are computed. The computed value of the total S-factor at zero energy is consistent with the reported results.

Measurement of the astrophysical S factor for the low energy 2 H(d,γ) 4 He reaction

2009 ◽  
Vol 33 (5) ◽  
pp. 350-353 ◽  
Author(s):  
Zhou Jing ◽  
Fu Yuan-Yong ◽  
Zhou Shu-Hua ◽  
Xia Hai-Hong ◽  
Li Cheng-Bo ◽  
...  
Keyword(s):  
Low Energy ◽  
S Factor

scholarly journals The 18F(p, α) 15O low-energy S-factor: A microscopic approach

2007 ◽  
Vol 785 (3-4) ◽  
pp. 381-394 ◽  
Author(s):  
M. Dufour ◽  
P. Descouvemont
Keyword(s):  
Low Energy ◽  
Microscopic Approach ◽  
S Factor

scholarly journals Low energy reactions of halo nuclei

2021 ◽  
Vol 252 ◽  
pp. 04003
Author(s):  
Ismael Martel
Keyword(s):  
Coulomb Barrier ◽  
Reaction Mechanisms ◽  
Halo Nucleus ◽  
Low Energy ◽  
Halo Nuclei ◽  
Direct Reaction ◽  
Neutron Halo ◽  
Weakly Bound ◽  
The Core ◽  
Nuclear Core

Halo nuclei are extreme nuclear states consisting of one or more weakly-bound valence nucleons spatially decoupled from a tightly bound nuclear core. The weakly bound nature of the halo dominates the reaction probability, but the specific reaction mechanisms depend also on the core and target nuclei. Despite of the inherent complexity of the reaction process, simple two-body models and direct reaction theories can be used to extract useful information of the structure of the halo nucleus and its dynamics. These ideas are discussed using selected experiments of Coulomb barrier reactions with one- and two- neutron halo systems.

Cluster structure and low-energy planes in icosahedral Al–Pd–Mn quasicrystals

2002 ◽  
Vol 342 (1-2) ◽  
pp. 164-168 ◽  
Author(s):  
Wenge Yang ◽  
Michael Feuerbacher ◽  
Knut Urban
Keyword(s):  
Cluster Structure ◽  
Low Energy

scholarly journals The Evaluation Method of Particle Clustering Phenomena in RAP

2019 ◽  
Vol 9 (3) ◽  
pp. 424 ◽  
Author(s):  
Guangji Xu ◽  
Tao Ma ◽  
Zhanyong Fang ◽  
Xiaoming Huang ◽  
Weiguang Zhang
Keyword(s):  
Evaluation Method ◽  
Cluster Structure ◽  
Great Influence ◽  
Stability Index ◽  
Large Degree ◽  
Particle Clustering ◽  
Large Variability ◽  
Reclaimed Asphalt ◽  
Weak Structure ◽  
Strong Cluster

The particle clustering phenomena in reclaimed asphalt pavement (RAP) particles is one of the most important factors to affect the efficient recycling of asphalt concrete. In this study, the particle composition, clustering degree, crushing properties and clustering stability of RAP were studied by extraction test and cantabro-crushing test. It was found that the particles above 4.75 mm were composed mainly of small particles with a large degree of cluster and poor stability. The coarse particles (>4.75 mm) had a great influence on the variation of 4.75 mm sieve. Quantitative indexes of Percentage Loss rate (PL) and Stability Index (w) were proposed to evaluate the clustering degree and the stability of RAP. It provided a meaningful reference for the comparison of different RAP and the different crushing processes. In addition, the RAP could be divided into three kinds of structures, including weak cluster structure, strong cluster structure and old aggregate. The process of crushing the RAP was divided into three stages, which are weak structure-dominated, strong structure-dominated and the broken old aggregate. The weak structure had the largest degree of cluster and worst stability, resulting in a large variability of RAP, and it should be avoided in the crushing process.

scholarly journals Variation after K-projection in antisymmetrized molecular dynamics for low-energy dipole excitations in 10Be and 16O

2020 ◽  
Vol 2020 (7) ◽  
Author(s):  
Yuki Shikata ◽  
Yoshiko Kanada-En’yo
Keyword(s):  
Molecular Dynamics ◽  
Energy Region ◽  
Cluster Structure ◽  
Low Energy ◽  
Dipole Strength ◽  
Novel Method ◽  
Current Densities

Abstract A novel method of variation after $K$-projection is proposed to study dipole excitations in the framework of antisymmetrized molecular dynamics with the $\beta$-constraint. The method is applied to $^{10}$Be and $^{16}$O to describe low-energy dipole excitations. In the application to ${}^{10}\textrm{Be}$, two dipole states in the low-energy region are obtained. For ${}^{16}\textrm{O}$, the $1_1^-$ and $1_2^-$ states are obtained with remarkable dipole strength. The $1_1^-$ state is characterized by significant toroidal dipole (TD) strength and compressional dipole strength, whereas the $1_2^-$ state has significant TD strength and shows a developed $\alpha + {}^{12}\textrm{C}$ cluster structure. Dipole properties in $^{16}$O are discussed by analyzing the current densities of the dipole transitions.

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