Fusion of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>32</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mo>+</mml:mo></mml:mrow><mml:mrow><mml:mn>154</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:

Gomes, P. R. S.; Charret, I. C.; Wanis, R.; Sigaud, G. M.; Vanin, V. R.; Neto, Raul Machado; Abriola, D.; Capurro, O. A.; DiGregorio, D. E.; Tada, M.; Duchêne, G.; Elgue, M.; Etchegoyen, A.; Niello, J. O. Fernández; Ferrero, A.; Gil, S.; Macchiavelli, A. O.; Pacheco, A. J.; Testoni, J. E.

doi:10.1103/physrevc.49.245

Cited by 55 publications

(5 citation statements)

References 16 publications

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“…Calculations of the fusion cross-section for the 16 O + 154 Sm reactions in ref. [14] indicated the importance of the excitation of 16 O. In marked contrast, no specific features appear in the measured barrier distribution for the 16 O + 144 Sm reactions which can be associated with the excitation of 16 O; rather, it was argued in Ref.…”

Section: Role Of Projectile Excitation In Fusionmentioning

confidence: 93%

Importance of nonlinear couplings in fusion-barrier distributions and mean angular momenta

Hagino

Takigawa

Dasgupta

et al. 1997

J. Phys. G: Nucl. Part. Phys.

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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 16 O in the 16 O + 144 Sm fusion reaction is also discussed using the all order coupled-channels equations.

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Section: Role Of Projectile Excitation In Fusionmentioning

confidence: 93%

Importance of nonlinear couplings in fusion-barrier distributions and mean angular momenta

Hagino

Takigawa

Dasgupta

et al. 1997

J. Phys. G: Nucl. Part. Phys.

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“…Some of those systems were measured in the 1990s by the Australian group of Leigh et al [5], in much more precise experiments, where fusion barrier distributions were also derived. Reisdorf et al [6] measured fusion of 40 Ar + 144,148,154 Sm, and Gil et al [7] and Gomes et al [8] measured fusion of 28 Si, 32 S + 154 Sm, respectively. More recently, fusion and quasifission of 40,48 Ca + 144,154 Sm were also measured [9,10].…”

Section: Introductionmentioning

confidence: 99%

Coupling effects on the fusion ofLi6+Sm154at energies slightly above the Coulomb barrier

Guo

Zhang

et al. 2015

Phys. Rev. C

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Measurements of complete and incomplete fusion cross sections for 6 Li+ 154 Sm have been performed at energies above the Coulomb barrier by the online γ -ray method, to investigate the effect of breakup and inelastic couplings on the complete fusion (CF) of this weakly bound system. We show that inelastic excitation couplings have non-negligible effects, when compared with the breakup effect, for deformed nuclei at energies very close to the Coulomb barrier. The average CF suppression corresponding to dynamic breakup effects was found to be around 35%. The total fusion cross section is not affected by the breakup coupling. A comparison between the 6 Li-induced CF suppression for three different samarium isotopes shows that the breakup effect is larger for the more spherical isotope.

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“…Each barrier distribution for the reactions 40 Ca + 194 Pt, 192 Os shows a characteristic structure, with a higher energy peak which has been associated with the octupole excitation of 40 Ca [11]. Calculations of fusion cross-sections for the reactions 16 O + 154 Sm, A Ge in [12,13] indicated that excitation of 16 O is important. In marked contrast, there are no specific features in the measured barrier distribution for the 16 O + 144 Sm reaction [6] which can be associated with the excitation of 16 O; indeed it was shown in Ref.…”

mentioning

confidence: 98%

Adiabatic Quantum Tunneling in Heavy-Ion Sub-barrier Fusion

et al. 1997

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High precision measurements of the fusion excitation functions for the reactions 40 Ca 192 Os clearly demonstrate that projectile excitation significantly modifies the potential barrier distribution. In sharp contrast, fusion of 16 O + 144 Sm appears to show no influence of the projectile excitation on the shape of the barrier distribution. These apparently conflicting conclusions are reconciled in this work, using realistic coupledchannels calculations, which show that high energy states produce an adiabatic potential renormalisation. This result indicates that adiabatic effects restrict, in a natural way, the states which influence the shape of a fusion barrier distribution. The analysis of barrier distributions thus offers a criterion for the relevance of the 'counter term' prescription in the Caldeira-Leggett approach.

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Fusion ofS32+154

Cited by 55 publications

References 16 publications

Importance of nonlinear couplings in fusion-barrier distributions and mean angular momenta

Importance of nonlinear couplings in fusion-barrier distributions and mean angular momenta

Coupling effects on the fusion ofLi6+Sm154at energies slightly above the Coulomb barrier

Adiabatic Quantum Tunneling in Heavy-Ion Sub-barrier Fusion

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