Further explorations of the alpha-particle optical model potential at low energies for the mass range A=45-209

Autor:	Avrigeanu, V., Avrigeanu, M., Mănăilescu, C.
Rok vydání:	2014
Předmět:	Nuclear Theory
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevC.90.044612
Popis:	The recent high-precision measurements of alpha-particle induced reaction data below the Coulomb barrier (B) make possible the understanding of limits and possible improvement of a previous optical model potential (OMP) for alpha-particles on nuclei within the mass number range 45130. Moreover, underestimation of reaction cross sections for well-deformed nuclei is removed by using ~7% larger radius for the surface imaginary part of this spherical OMP. Improved input parameters based on recent independent data, particularly gamma-ray strength functions, but no empirical rescaling factor of the gamma and/or neutron widths have been involved within statistical model calculation of the corresponding (alpha,x) reaction cross sections. Comment: 14 pages, 11 figures, accepted for publication in Phys. Rev. C
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1406.1656 Zobrazit plný text záznamu View this record from Arxiv