K Hagino et al 1997 J. Phys. G: Nucl. Part. Phys. 23 1413 doi:10.1088/0954-3899/23/10/031
Importance of nonlinear couplings in fusion-barrier distributions and mean angular momenta
K Hagino
, N Takigawa, M Dasgupta
, D J Hinde and J R Leigh
The effects of higher-order coupling of surface vibrations to the relative motion on heavy-ion fusion reactions at near-barrier energies are investigated. The coupled-channels equations are solved to all orders, and also in the linear and the quadratic-coupling approximations. It is shown that the shape of fusion-barrier distributions and the energy dependence of the average angular momentum of the compound nucleus can significantly change when the higher-order couplings are included. The role of octupole vibrational excitation of 
in the 
fusion reaction is also discussed using the all-order coupled-channels equations.
- PACS
-
25.70.Jj Fusion and fusion-fission reactions
24.10.Eq Coupled-channel and distorted-wave models
27.60.+j 90(less-than-or-equal-to)A(less-than-or-equal-to)149
- Subjects
- Dates
-
Issue 10 (October 1997)
Received 27 June 1997
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Importance of nonlinear couplings in fusion-barrier distributions and mean angular momenta
K Hagino et al 1997 J. Phys. G: Nucl. Part. Phys. 23 1413
-
Evidence of double phonon excitations in the fusion of
Pb
M Dasgupta et al 1997 J. Phys. G: Nucl. Part. Phys. 23 1491
-
Probing anharmonic properties of nuclear surface vibration by heavy-ion fusion reactions
N Takigawa et al 1997 J. Phys. G: Nucl. Part. Phys. 23 1367
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