scholarly journals Systematics of the semimicroscopic proton-nucleus optical potential at low energies relevant for nuclear astrophysics

2021 ◽  
Vol 103 (4) ◽  
Author(s):  
E. Vagena ◽  
M. Axiotis ◽  
P. Dimitriou
Keyword(s):  
Optical Potential ◽  
Nuclear Astrophysics ◽  
Low Energies

scholarly journals NUCLEAR MEAN-FIELD DESCRIPTION OF PROTON ELASTIC SCATTERING BY 12,13 C AT LOW ENERGIES

2020 ◽  
Vol 31 (1) ◽  
Author(s):  
Huan Nhut Phan
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Nuclear Reactions ◽  
Mean Field ◽  
Nuclear Astrophysics ◽  
Nucleon Nucleon ◽  
Light Nuclei ◽  
Intermediate Energies ◽  
Proton Elastic Scattering ◽  
Low Energies

Nuclear reactions of proton by light nuclei at low energies play a key role in the study ofnucleosynthesis which is of interest in nuclear astrophysics. The most fundamental process whichis very necessary is the elastic scattering. In this work, we construct a microscopic proton-nucleuspotential in order to describe the differential cross-sections over scattering angles of the protonelastic scattering by 12C and 13C in the range of available energies 14 - 22 MeV. The microscopicoptical potential is based on the folding model using the effective nucleon-nucleon interactionCDM3Yn. The results show the promising use of the CDM3Yn interactions at low and very lowenergies, which were originally used for nuclear reactions at intermediate energies. This could bethe premise for the study of nuclear reactions using CDM3Yn interaction in astrophysics at lowenergies.

scholarly journals Asymptotic theory of charged particle transfer reactions at low energies and nuclear astrophysics

2019 ◽  
Vol 49 ◽  
pp. 1960016
Author(s):  
R. Yarmukhamedov ◽  
K. I. Tursunmakhatov ◽  
N. Burtebayev
Keyword(s):  
Cross Sections ◽  
Asymptotic Theory ◽  
Nuclear Astrophysics ◽  
Transfer Reactions ◽  
Dispersion Theory ◽  
Low Energies ◽  
Proton Transfer Reactions ◽  
Stellar Energy ◽  
Text Model ◽  
Three Body

An asymptotic theory is proposed for the peripheral transfer [Formula: see text] reaction at low energies within the three-body ([Formula: see text], [Formula: see text] and [Formula: see text]) model by combining the dispersion theory and DWBA, where [Formula: see text], [Formula: see text] and [Formula: see text] is a transferred particle. The contribution of the three-body ([Formula: see text], [Formula: see text] and [Formula: see text]) Coulomb dynamics of the transfer mechanism both to the peripheral partial amplitudes for the partial wave [Formula: see text] and to the DWBA amplitude is investigated. The results of the analysis of the differential cross sections of the specific proton transfer reactions at above-barrier energies are presented. New estimates and their uncertainties are obtained for values of the asymptotic normalization coefficients for [Formula: see text] and [Formula: see text] as well as for the direct astrophysical [Formula: see text] factors at stellar energy of the radiative capture [Formula: see text] and [Formula: see text] reactions.

On the reactive content of the pion-nucleus optical potential at low energies

1989 ◽  
Vol 217 (1-2) ◽  
pp. 14-18 ◽  
Author(s):  
M.Kh. Khankhasayev ◽  
N.S. Topilskaya
Keyword(s):  
Optical Potential ◽  
Low Energies

Optical potential and escape depth for electron scattering at very low energies

1999 ◽  
Vol 101-103 ◽  
pp. 473-478 ◽  
Author(s):  
C. Solterbeck ◽  
O. Tiedje ◽  
T. Strasser ◽  
S. Brodersen ◽  
A. Bödicker ◽  
...  
Keyword(s):  
Electron Scattering ◽  
Optical Potential ◽  
Escape Depth ◽  
Low Energies

scholarly journals Underground Nuclear Astrophysics: pushing direct measurements toward the Gamow window

2020 ◽  
Vol 227 ◽  
pp. 01015
Author(s):  
Paolo Prati
Keyword(s):  
Nuclear Reactions ◽  
Nuclear Astrophysics ◽  
Cosmic Ray ◽  
Reaction Rates ◽  
Carbon Ions ◽  
Ongoing Research ◽  
Ion Accelerator ◽  
Direct Measurements ◽  
Low Energies ◽  
Deep Underground

The aim of experimental nuclear astrophysics is to provide information on the nuclear processes involved in astrophysical scenarios at the relevant energy range. However, the measurement of the cross section of nuclear reactions at low energies present formidable difficulties due to the very low reaction rates often overwhelmed by the background. Several approaches have been proposed and exploited to overcome such severe obstacles: in such frame, the idea to install a low energy - high intensity ion accelerator deep underground, to gain high luminosity while reducing the cosmic ray background, brought more than 25 years ago, to the pilot LUNA experiment. LUNA stands for Laboratory for Underground Nuclear Astrophysics: in the cave under the Gran Sasso mountain (in Italy) first a 50 kV and then a 400 kV single-ended accelerator for protons and alphas were deployed and produced plenty of data mainly on reactions of the H-burning phase in stars. Recently, similar facilities have been installed and/or proposed in other underground laboratories in US and China. LUNA as well is going to make a big step forward, with a new machine in the MV range which will be able to provide intense beams of protons, alphas and carbon ions. The rationale of underground nuclear astrophysics will be presented together with the last updates on the ongoing research programs.

The deuteron optical potential at low energies

1991 ◽  
Vol 533 (1) ◽  
pp. 71-94 ◽  
Author(s):  
M. Ermer ◽  
H. Clement ◽  
G. Holetzke ◽  
W. Kabitzke ◽  
G. Graw ◽  
...  
Keyword(s):  
Optical Potential ◽  
Low Energies

Global Optical Potential for [sup 6]He Interactions at Low Energies

2009 ◽  
Author(s):  
Y. Kucuk ◽  
I. Boztosun ◽  
T. Topel ◽  
Matko Milin ◽  
Tamara Niksic ◽  
...  
Keyword(s):  
Optical Potential ◽  
Low Energies
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