Naslov
Role of the orientation angles of reacting nuclei in evaporation residue production

Autori
Mandaglio, G. ; Manganaro, Marina ; Fazio, G. ; Giardina, G. ; Sacca, C. ; Muminov, A. I. ; Nasirov, A. K.

Izvornik
Radiation effects and defects in solids (1042-0150) 164 (2009), 5-6; 287-290

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

Ključne riječi
HEAVY-ION COLLISIONS ; EVEN-EVEN NUCLIDES ; ENTRANCE CHANNEL ; SUPERHEAVY ELEMENTS ; FUSION DYNAMICS ; MASSIVE NUCLEI ; CROSS-SECTIONS ; FISSION ; CAPTURE

Sažetak
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 P=30 (projectile) to P=0-15(target) can contribute to the ER formation. At large beam energies (about Ec.m.=140-180MeV), all P-T configurations of reactants can contribute to the ER cross-section, which ranges between 10 and 100mb, while at Ec.m.185MeV, the ER cross-section ranges between 1 and 0.1mb because the fission barrier for the compound nucleus decreases by increasing its excitation energy and angular momentum.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA