Naslov
Investigation of the role of the projectile-target orientation angles on the evaporation residue production

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

Izvornik
Physics of atomic nuclei (1063-7788) 72 (2009), 10; 1639-1650

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

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

Sažetak
The measured yield of evaporation residues in reactions with massive nuclei have been well reproduced by using the partial fusion and quasifission cross sections obtained in the dinuclear-system model. 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 is investigated for the (48)Ca + (154)Sm reaction as a function of the beam energy. At the low beam energies only the orientation angles close to alpha P = 30A degrees (projectile) and alpha P = 0A degrees-15A degrees (target) can contribute to the formation of evaporation residues. At large beam energies (about E (c.m.) = 140-180 MeV) the collisions at all values of orientation angles alpha P and alpha (T) of reactants can contribute to the evaporation residue cross section which ranges between 10-100 mb, while at E (c.m.) > 185 MeV the evaporation residue cross section ranges between 0.1-1 mb because the fission barrier for the compound nucleus decreases by increasing its excitation energy and angular momentum.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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