J. Physique Lett. 36, 113-116 (1975)
DOI: 10.1051/jphyslet:01975003605011300

How does the elastic scattering of 12C + 20Ne compare with that of 16O + 16O ?

H. Doubre¹, E. Plagnol¹, J.C. Roynette¹, J.M. Loiseaux², P. Martin² et P. de Saintignon<sup>2

1</sup>  Institut de Physique Nucléaire, BP 1, 91406 Orsay, France
²  Institut des Sciences Nucléaires, BP 257, 38044 Grenoble, France

Abstract
Excitation functions for 5 exit channels of the 12C + 20Ne system are given in the range 22-28 MeV centre of mass incident energy. An important structure is observed in the elastic scattering excitation functions taken at 90° and 130° (C.M.). This structure, which reminds one of the 16O + 16O case, is studied in terms of angular momentum matching. An angular distribution taken at 24.7 MeV (C.M.) is also presented. The direct channel absorption is shown to be intermediate between the 16O + 16O and 18O + 18O cases.

Résumé
Les fonctions d'excitation de cinq voies de sortie du système 12C + 20Ne entre 22 et 28 MeV (C.M.) présentent une structure importante à 90° et 130° (C.M.). Cette structure, analogue à celle qu'on observe pour 16O + 16O est analysée en termes d'accord des moments angulaires. On présente une distribution angulaire à 24,7 MeV (C.M.). Il est montré que l'absorption due aux voies directes est intermédiaire entre celle de 16O + 16O et 18O + 18O.

PACS
2570 - Heavy ion induced reactions and scattering.
2720 - Properties of nuclei with 6 <or= A <or= 19.
2730 - Properties of nuclei with 20 <or= A <or= 38.

Key words
nuclear reactions and scattering due to nuclei of z>2 -- nuclei with 20<or=A<or=38 -- nuclei with 6<or=A<or=19 -- elastic scattering -- sup 12 C+ sup 20 Ne -- sup 16 O+ sup 16 O -- excitation functions -- elastic scattering excitation functions -- angular momentum matching -- angular distribution -- direct channel absorption