Enhanced αparticle optical potential at low energies, for the mass range A∼45209
Abstract
An updated optical potential is thus provided for αparticles on nuclei within the mass number range 45≤A≤209, below the Coulomb barrier (B), on the basis of recent highprecision measurements of αparticle induced reaction data below B that made possible the understanding of actual limits and possible improvement of the αparticle opticalmodel potentials. The main revision concerns actually only the surface imaginary potential depth at the lowest αparticle energies well below B, and in fact only for the mass range above A∼130. A further regional point is the underestimation of reaction cross sections for the rareearth nuclei by using the spherical optical potential unless a 7% larger value of the surface imaginary potential radius is taken into account. Involvement of this potential for further description of both the scattering and αparticles induced reactions is moreover discussed in the present work, of equal interest for nuclear astrophysics and nuclear technology for fusion devices.
 Authors:
 Horia Hulubei National Institute for Physics and Nuclear Engineering, POBox MG6, 077125 Magurele, Ilfov (Romania)
 Publication Date:
 OSTI Identifier:
 22390966
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: AIP Conference Proceedings; Journal Volume: 1645; Journal Issue: 1; Conference: Carpathian Summer School of Physics 2014, Sinaia (Romania), 1326 Jul 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALPHA PARTICLES; ALPHA REACTIONS; COULOMB FIELD; CROSS SECTIONS; MASS NUMBER; NUCLEAR POTENTIAL; OPTICAL MODELS; RARE EARTH NUCLEI; SPHERICAL CONFIGURATION
Citation Formats
Avrigeanu, V., Avrigeanu, M., and Mănăilescu, C. Enhanced αparticle optical potential at low energies, for the mass range A∼45209. United States: N. p., 2015.
Web. doi:10.1063/1.4909569.
Avrigeanu, V., Avrigeanu, M., & Mănăilescu, C. Enhanced αparticle optical potential at low energies, for the mass range A∼45209. United States. doi:10.1063/1.4909569.
Avrigeanu, V., Avrigeanu, M., and Mănăilescu, C. 2015.
"Enhanced αparticle optical potential at low energies, for the mass range A∼45209". United States.
doi:10.1063/1.4909569.
@article{osti_22390966,
title = {Enhanced αparticle optical potential at low energies, for the mass range A∼45209},
author = {Avrigeanu, V. and Avrigeanu, M. and Mănăilescu, C.},
abstractNote = {An updated optical potential is thus provided for αparticles on nuclei within the mass number range 45≤A≤209, below the Coulomb barrier (B), on the basis of recent highprecision measurements of αparticle induced reaction data below B that made possible the understanding of actual limits and possible improvement of the αparticle opticalmodel potentials. The main revision concerns actually only the surface imaginary potential depth at the lowest αparticle energies well below B, and in fact only for the mass range above A∼130. A further regional point is the underestimation of reaction cross sections for the rareearth nuclei by using the spherical optical potential unless a 7% larger value of the surface imaginary potential radius is taken into account. Involvement of this potential for further description of both the scattering and αparticles induced reactions is moreover discussed in the present work, of equal interest for nuclear astrophysics and nuclear technology for fusion devices.},
doi = {10.1063/1.4909569},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1645,
place = {United States},
year = 2015,
month = 2
}

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