α-particles optical potential for medium and heavy-mass nuclei around the Coulomb barrier

Recent high-precision measurements α-particle elastic scattering and (α,x) reaction cross sections has motivated the extension of a previous semi-microscopic analysis for the mass-region 50<A<120 and energies from 13 to 50 MeV to heavy nuclei up to 209Bi. The regional optical model potenti...

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Main Authors: Avrigeanu M., Avrigeanu V.
Format: Article
Language:English
Published: EDP Sciences 2010-03-01
Series:EPJ Web of Conferences
Online Access:http://dx.doi.org/10.1051/epjconf/20100202003
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author Avrigeanu M.
Avrigeanu V.
author_facet Avrigeanu M.
Avrigeanu V.
author_sort Avrigeanu M.
collection DOAJ
description Recent high-precision measurements α-particle elastic scattering and (α,x) reaction cross sections has motivated the extension of a previous semi-microscopic analysis for the mass-region 50<A<120 and energies from 13 to 50 MeV to heavy nuclei up to 209Bi. The regional optical model potential for low-energy α-particles which has thus been obtained entirely on the basis of elastic-scattering data analysis, for the nuclei within the above-mentioned mass and energy ranges, is involved within the (α,γ), (α,n) and (α,p) reaction cross sections analysis at incident energies below the Coulomb barrier. The statistical-model parameters used for the cross section calculations were established by analyzing various independent experimental data for the involved nuclei, making possible the focus on the uncertainties of α-particle OMP. An optical potential which describe equally well both the low energy elastic-scattering and induced-reaction data of α-particles has finally been obtained for medium and heavy mass nuclei.
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spelling doaj.art-e8cbd484fc54434ab11e6dbdb94121182022-12-21T21:14:51ZengEDP SciencesEPJ Web of Conferences2100-014X2010-03-0120200310.1051/epjconf/20100202003α-particles optical potential for medium and heavy-mass nuclei around the Coulomb barrierAvrigeanu M.Avrigeanu V.Recent high-precision measurements α-particle elastic scattering and (α,x) reaction cross sections has motivated the extension of a previous semi-microscopic analysis for the mass-region 50<A<120 and energies from 13 to 50 MeV to heavy nuclei up to 209Bi. The regional optical model potential for low-energy α-particles which has thus been obtained entirely on the basis of elastic-scattering data analysis, for the nuclei within the above-mentioned mass and energy ranges, is involved within the (α,γ), (α,n) and (α,p) reaction cross sections analysis at incident energies below the Coulomb barrier. The statistical-model parameters used for the cross section calculations were established by analyzing various independent experimental data for the involved nuclei, making possible the focus on the uncertainties of α-particle OMP. An optical potential which describe equally well both the low energy elastic-scattering and induced-reaction data of α-particles has finally been obtained for medium and heavy mass nuclei.http://dx.doi.org/10.1051/epjconf/20100202003
spellingShingle Avrigeanu M.
Avrigeanu V.
α-particles optical potential for medium and heavy-mass nuclei around the Coulomb barrier
EPJ Web of Conferences
title α-particles optical potential for medium and heavy-mass nuclei around the Coulomb barrier
title_full α-particles optical potential for medium and heavy-mass nuclei around the Coulomb barrier
title_fullStr α-particles optical potential for medium and heavy-mass nuclei around the Coulomb barrier
title_full_unstemmed α-particles optical potential for medium and heavy-mass nuclei around the Coulomb barrier
title_short α-particles optical potential for medium and heavy-mass nuclei around the Coulomb barrier
title_sort α particles optical potential for medium and heavy mass nuclei around the coulomb barrier
url http://dx.doi.org/10.1051/epjconf/20100202003
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