Naslov
Refractive elastic scattering of carbon and oxygen nuclei: The mean field analysis and Airy structures

Autori
Szilner, Suzana ; Nicoli, M.P. ; Basrak, Zoran ; Freeman, R.M. ; Haas, F. ; Morsad, A. ; Brandan M.E. ; Satchler, G.R. ;

Izvornik
Physical Review C (0556-2813) 64 (2001);

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
elastic scattering; nuclear rainbow; optical potential

Sažetak
The experimental data on the ^16O+^12C and ^18O+^12C elastic scatterings and their optical model analysis are presented. Detailed and complete elastic angular distributions have been measured at the Strasbourg Vivitron accelerator at several energies covering the energy range between 5 and 10 MeV per nucleon. The elastic scattering angular distributions show the usual diffraction pattern and also, at larger angles, refractive effects in the form of nuclear rainbow and associated Airy structures. The optical model analysis unambiguously shows the evolution of the refractive scattering pattern. The observed structure, namely the Airy minima, can be consistently described by a nucleus-nucleus potential with a deep real part and a weakly absorptive imaginary part. The difference in absorption in the two systems is explained by an increased imaginary (mostly surface) part of the potential in the ^18O+^12C system. The relation between the obtained potentials and those reported for the symmetrical ^16O+^16O and ^12C+^12C systems is drawn.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA