Enhanced α-particle optical potential at low energies, for the mass range A∼45-209

2015 ◽  
Author(s):  
V. Avrigeanu ◽  
M. Avrigeanu ◽  
C. Mănăilescu
Keyword(s):  
Optical Potential ◽  
Mass Range ◽  
Low Energies

scholarly journals Validation of an optical potential for incident and emitted low-energy $$\alpha $$-particles in the $$A\sim 60$$ mass range

2021 ◽  
Vol 57 (2) ◽  
Author(s):  
V. Avrigeanu ◽  
M. Avrigeanu
Keyword(s):  
Optical Potential ◽  
Optical Model ◽  
Direct Interaction ◽  
Mass Range ◽  
Model Potential ◽  
Alpha Particles ◽  
Number Range ◽  
Optical Model Potential ◽  
Quadrupole Resonance ◽  
Reaction Channels

AbstractA consistent set of statistical-model input parameters, validated by analysis of various independent data, makes possible the assessment of an $$\alpha $$ α -particle optical model potential [Phys. Rev. C 90, 044612 (2014)] also for nucleon-induced $$\alpha $$ α -emission within the $$A \sim 60$$ A ∼ 60 mass-number range. The advantage of recent data for low-lying states feeding is taken as well. Consideration of additional reaction channels leading to increase of the $$\alpha $$ α -emission beyond the statistical predictions has concerned the pickup direct interaction and Giant Quadrupole Resonance similar features.

The proton microscopic optical potential based on Skyrme interaction

2018 ◽  
Vol 27 (03) ◽  
pp. 1850023
Author(s):  
Yongli Xu ◽  
Yinlu Han ◽  
Qingbiao Shen
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Optical Potential ◽  
Local Density ◽  
Mass Range ◽  
Reaction Cross ◽  
Light Nuclei ◽  
Skyrme Interaction ◽  
The Green Function ◽  
Microscopic Optical Potential

The proton microscopic optical potential (MOP) based on Skyrme interaction has been achieved by the Green function method in the nuclear matter, and given by the local density approximation (LDA) for finite nuclei. The reaction cross-sections, elastic scattering angular distributions, analyzing powers, and spin-rotation functions are predicted by the obtained proton MOP with Skyrme interaction SkC in the mass range of target nuclei 24[Formula: see text][Formula: see text][Formula: see text]A[Formula: see text][Formula: see text][Formula: see text]209 with incident proton energy below 100[Formula: see text]MeV. These observables are further predicted for some light nuclei and actinide nuclei below 100[Formula: see text]MeV. The prediction is compared with existing experimental data. It is revealed that the obtained proton MOP based on Skyrme interaction SkC can satisfactorily describe the proton–nucleus elastic scattering.

scholarly journals Light WIMP Searches Involving Electron Scattering

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
J. D. Vergados ◽  
Ch. C. Moustakidis ◽  
Yeuk-Kwan E. Cheung ◽  
H. Ejiri ◽  
Yeongduk Kim ◽  
...  
Keyword(s):  
Dark Matter ◽  
Cross Section ◽  
Electron Scattering ◽  
Mass Range ◽  
Bound State ◽  
Particle Model ◽  
Electron Mass ◽  
Bound State Wave Function ◽  
Low Energies ◽  
The Cross

In the present work we examine the possibility of detecting electrons in light dark matter searches. These detectors are considered to be the most appropriate for detecting dark matter particles with a mass in the MeV region. We analyze theoretically some key issues involved in such detection. More specifically we consider a particle model involving WIMPs interacting with fermions via Z-exchange. We find that for WIMPs with mass in the electron mass range the cross section for WIMP-atomic electron scattering is affected by the electron binding. For WIMPs more than 20 times heavier than the electron, the binding affects the kinematics very little. As a result, many electrons can be ejected with energy which increases linearly with the WIMP mass, but the cross section is somewhat reduced depending on the bound state wave function employed. On the other hand for lighter WIMPs, the effect of binding is dramatic. More specifically at most 10 electrons, namely, those with binding energy below 10 eV, become available even in the case of WIMPs with a mass as large as 20 times the electron mass. Even fewer electrons contribute if the WIMPs are lighter. The cross section is, however, substantially enhanced by the Fermi function corrections, which become more important at low energies of the outgoing electrons. Thus events of 0.5–2.5 per kg-y become possible.

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

The neutron microscopic optical potential based on skyrme interaction

2016 ◽  
Vol 25 (02) ◽  
pp. 1650013 ◽  
Author(s):  
Yong-Li Xu ◽  
Hai-Rui Guo ◽  
Yin-Lu Han ◽  
Qing-Biao Shen
Keyword(s):  
Cross Sections ◽  
Optical Potential ◽  
Local Density ◽  
Mass Range ◽  
Light Nuclei ◽  
Skyrme Interaction ◽  
Analyzing Powers ◽  
The Green Function ◽  
Finite Nuclei ◽  
Microscopic Optical Potential

The neutron microscopic optical potential (MOP) based on Skyrme interaction has been achieved by the Green function method in the nuclear matter, and given by the local density approximation (LDA) for finite nuclei. The total cross-sections, nonelastic cross-sections, elastic scattering angular distributions and analyzing powers are predicted for some light nuclei and actinide nuclei below 100[Formula: see text]MeV by the obtained neutron MOP with the Skyrme interaction SkC. These data are also predicted for targets in the mass range of [Formula: see text] which are too deformed and have rich nuclear structure properties. All of the theoretical results give reasonable agreements with the corresponding experimental data.

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
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