Bibcode
Mandaglio, G.; Manganaro, M.; Fazio, G.; Giardina, G.; Saccá, C.; Muminov, A. I.; Nasirov, A. K.
Bibliographical reference
Radiation Effects and Defects in Solids, vol. 164, no. 5, pp. 287-290
Advertised on:
2009
Citations
0
Refereed citations
0
Description
The influence of the orientation angles of the projectile- and
target-nucleus symmetry axes relative to the beam direction on the
production of the evaporation residues (ERs) is investigated for the
48Ca+154Sm reaction as a function of the beam
energy. The measured yields of ERs by massive nuclei reactions have been
well reproduced by using the partial fusion and quasi-fission
cross-sections obtained in the dinuclear system model. At lower beam
energies, only the orientation angles close to
αP=30° (projectile) to
αP=0°-15°(target) can contribute to the ER
formation. At large beam energies (about Ec.m.=140-180 MeV),
all αP-αT configurations of reactants
can contribute to the ER cross-section, which ranges between 10 and 100
mb, while at Ec.m.>185 MeV, the ER cross-section ranges
between 1 and 0.1 mb because the fission barrier for the compound
nucleus decreases by increasing its excitation energy and angular
momentum.