ELASTIC SCATTERING OF 58Ni ON 46Ti AT ENERGIES NEAR THE COULOMB BARRIER: SEARCH FOR RESONANT STATES

Author:

ABBONDANNO U.12,DEMANINS F.12,VANNINI G.12,BOCCACCIO P.3,VANNUCCI L.3,RICCI R.A.43,BRUNO M.5,D’AGOSTINO M.5,MILAZZO P.M.56,CINDRO N.7

Affiliation:

1. Dipartimento di Fisica dell ’Università di Trieste, 34121 Trieste, Italy

2. Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, 34127 Trieste, Italy

3. Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, 35020 Legnaro, Italy

4. Dipartimento di Fisica, dell’Università di Padova, 35131 Padova, Italy

5. Dipartimento di Fisica dell’Università di Bologna, 40126 Bologna, Italy

6. Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, 40126 Bologna, Italy

7. Ruder Bošković Institute, 41001 Zagreb, Croatia

Abstract

In a search for possible resonant behavior in medium and heavy composite systems, the 46Ti(58Ni, 58Ni)46Ti elastic scattering was studied in the 58 Ni incident energy range from 216.2 to 240 MeV. A kinematic coincidence technique employing position sensitive silicon detectors was used to obtain the mass identification of the binary events. Evidence was found for two structures of non-statistical nature in the elastic excitation function at, respectively, incident 58 Ni energies of 223.9 and 227.4 MeV (Ecm=99.0 and 100.6 MeV). A statistical analysis of the corresponding angular distributions disclosed periodical behavior analogous to that caused by single partial waves of J=(36 ± 1) and (47 ± 1), respectively.

Publisher

World Scientific Pub Co Pte Lt

Subject

General Physics and Astronomy,Nuclear and High Energy Physics

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