Role of the Target Orientation Angle and Orbital Angular Momentum in the Evaporation Residue Production

Fazio, Giovanni; Giardina, Giorgio; Hanappe, Francis; Mandaglio, Giuseppe; Manganaro, M.; Muminov, Akhtam I.; Nasirov, Avazbek K.; Saccá, Carmelo
Referencia bibliográfica

Journal of the Physical Society of Japan, Volume 77, Issue 12, pp. 124201 (2008).

Fecha de publicación:
12
2008
Número de autores
8
Número de autores del IAC
0
Número de citas
22
Número de citas referidas
16
Descripción
The influence of the orientation angles of the target nucleus symmetry axis, relative to the beam direction, on the production of the evaporation residues is investigated for the 48Ca+154Sm reaction as a function of beam energy. At low energies (Ec.m.<137 MeV), the yield of evaporation residues is observed only for collisions with small orientation angles (αT<45\circ). At large energies (about Ec.m.=140--180 MeV), all orientation angles αT can contribute to the evaporation residue cross section σER in the 10-100 mb range. At Ec.m.>180 MeV, σER ranges approximately 0.1-10 mb because the fission barrier for a compound nucleus decreases with increasing excitation energy and angular momentum.