Elastic alpha scattering experiments and the alpha-nucleus optical potential at low energies

Mohr, Péter and Kiss, Gábor Gyula and Fülöp, Zsolt and Galaviz, D. and Gyürky, György and Somorjai, Endre (2013) Elastic alpha scattering experiments and the alpha-nucleus optical potential at low energies. ATOMIC DATA AND NUCLEAR DATA TABLES, 99 (6). pp. 651-679. ISSN 0092-640X

Preview

Text 1212.2891v1.pdf Available under License Creative Commons Attribution. Download (378kB) | Preview

Abstract

High precision angular distribution data of (α,α) elastic scattering are presented for the nuclei 89Y, 92Mo, 106,110,116Cd, 112,124Sn, and 144Sm at energies around the Coulomb barrier. Such data with small experimental uncertainties over the full angular range (20-170 degrees) are the indispensable prerequisite for the extraction of local optical potentials and for the determination of the total reaction cross section σreac. A systematic fitting procedure was applied to the presented experimental scattering data to obtain comprehensive local potential parameter sets which are composed of a real folding potential and an imaginary potential of Woods-Saxon surface type. The obtained potential parameters were used in turn to construct a new systematic α-nucleus potential with very few parameters. Although this new potential cannot reproduce the angular distributions with the same small deviations as the local potential, the new potential is able to predict the total reaction cross sections for all cases under study.

Actions (login required)

Edit Item