Theoretical study of fusion reactions 32S + 94,96Zr and 40Ca + 94,96Zr and quadrupole deformation of 94Zr

Wang, Bing; Zhao, Weijuan; Zhao, En-Guang; Zhou, Shan‐Gui

doi:10.1007/s11433-016-5781-0

Cited by 14 publications

(9 citation statements)

References 76 publications

(100 reference statements)

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“…When the Q value for one neutron pair transfer is positive, the widths of the barrier distribution are calculated as ∆ i → gQ(2n) + ∆ i , (i = 1, 2), where Q(2n) is the Q value for one neutron pair transfer. g is taken as 0.32 for all reactions with positive Q value for one neutron pair transfer channel [45,46].…”

Section: Methodsmentioning

confidence: 99%

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Systematic study of suppression of complete fusion in reactions involving weakly bound nuclei at energies above the Coulomb barrier

et al. 2016

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Complete fusion excitation functions of reactions involving breakup are studied by using the empirical coupled-channel (ECC) model with breakup effects considered. An exponential function with two parameters is adopted to describe the prompt-breakup probability in the ECC model. These two parameters are fixed by fitting the measured prompt-breakup probability or the complete fusion cross sections. The suppression of complete fusion at energies above the Coulomb barrier is studied by comparing the data with the predictions from the ECC model without the breakup channel considered. The results show that the suppression of complete fusion are roughly independent of the target for the reactions involving the same projectile.

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Section: Methodsmentioning

confidence: 99%

“…In the ECC model, a barrier distribution is used to take effectively into account the effects of couplings to inelastic excitations and neutron transfer channels [45,46]. However, the coupling to breakup channel has not been taken into account.…”

Section: Introductionmentioning

confidence: 99%

Systematic study of suppression of complete fusion in reactions involving weakly bound nuclei at energies above the Coulomb barrier

et al. 2016

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“…The underestimate of the data for the reactions 32 S+ 94 Zr and 40 Ca+ 94 Zr might come from the smaller deformation parameter for 94 Zr used in our calculations. Further study has been done with our ECC model to elucidate which of these two effects (the coupling to the PQNT channel or the structure of 94 Zr) is responsible for the underestimate of the capture cross section of the reactions 32 S+ 94 Zr and 40 Ca+ 94 Zr [75]. In addition, in Ref.…”

Section: Further Discussionmentioning

confidence: 99%

“…We will show that this ECC model can give a reasonably adequate and systematic description of the capture cross sections. Note that this model has been used to study the CC effects in fusion reactions 32 S + 94,96 Zr and 40 Ca + 94,96 Zr [75] and extended to describe the complete fusion cross sections for the reactions involving weakly bound nuclei at above-barrier energies [76].…”

Section: Introductionmentioning

confidence: 99%

Systematics of capture and fusion dynamics in heavy-ion collisions

Wang,

Wen,

Zhao

et al. 2015

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We perform a systematic study of capture excitation functions by using an empirical coupled-channel model. In this model, a barrier distribution is used to take effectively into account the effects of couplings between the relative motion and intrinsic degrees of freedom. The shape of the barrier distribution is of an asymmetric Gaussian form. The effect of neutron transfer channels is also included in the barrier distribution. Based on the interaction potential between the projectile and the target, empirical formulas are proposed to determine the parameters of the barrier distribution.Theoretical estimates for barrier distributions and calculated capture cross sections together with experimental cross sections of 220 reaction systems with 182 Z P Z T 1640 are tabulated. The results show that our empirical formulas work quite well in the energy region around the Coulomb barrier. This model can provide prediction of capture cross sections for the synthesis of superheavy nuclei as well as valuable information on capture and fusion dynamics.

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“…In this ECC model, the effects of couplings to inelastic excitations and neutron transfer channels are taken effectively into account by introducing an empirical barrier weight function [19][20][21]. The Q-value of two-neutron transfer channel for the reaction with stable beam 39 K is positive while that for the reaction with neutron-rich radioactive beam 46 K is negative.…”

Section: Introductionmentioning

confidence: 99%

Theoretical study of the capture of stable K39 and neutron-rich radioactive K46 by
Wang
¹
,
Zhao
²
,
Zhao
³

et al. 2018
Phys. Rev. C
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The empirical coupled-channel (ECC) model and the universal fusion function (UFF) prescription are used to analyse the data of capture cross sections for reactions 39 K+ 181 Ta and 46 K+ 181 Ta reported recently by A. Wakhle et al. [Phys. Rev. C 97, 021602(R) (2018)]. The results of the ECC model are in good agreement with the data of 39 K+ 181 Ta while, for 46 K+ 181 Ta, the predictions of the ECC model overestimate the above-barrier capture cross sections.Comparing the reduced data of these two reactions, it is found that the above-barrier cross sections of 39 K+ 181 Ta are consistent with the UFF and are larger than those of 46 K+ 181 Ta. This implies that the capture cross sections of 46 K+ 181 Ta are suppressed at energies above the Coulomb barrier. Furthermore, at sub-barrier energies, the reduced calculated capture cross sections of 39 K+ 181 Ta are a little larger than those of 46 K+ 181 Ta, which is owing to the coupling to the positive Q-value two-neutron transfer channel.

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Theoretical study of fusion reactions 32S + 94,96Zr and 40Ca + 94,96Zr and quadrupole deformation of 94Zr

Cited by 14 publications

References 76 publications

Systematic study of suppression of complete fusion in reactions involving weakly bound nuclei at energies above the Coulomb barrier

Systematic study of suppression of complete fusion in reactions involving weakly bound nuclei at energies above the Coulomb barrier

Systematics of capture and fusion dynamics in heavy-ion collisions

Theoretical study of the capture of stable K39 and neutron-rich radioactive K46 by
Wang
¹
,
Zhao
²
,
Zhao
³

et al. 2018
Phys. Rev. C
Self Cite

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Theoretical study of fusion reactions 32S + 94,96Zr and 40Ca + 94,96Zr and quadrupole deformation of 94Zr

Cited by 14 publications

References 76 publications

Systematic study of suppression of complete fusion in reactions involving weakly bound nuclei at energies above the Coulomb barrier

Systematic study of suppression of complete fusion in reactions involving weakly bound nuclei at energies above the Coulomb barrier

Systematics of capture and fusion dynamics in heavy-ion collisions

Theoretical study of the capture of stable K39 and neutron-rich radioactive K46 by Wang1, Zhao2, Zhao3 et al. 2018Phys. Rev. CSelf Cite

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Theoretical study of the capture of stable K39 and neutron-rich radioactive K46 by
Wang
¹
,
Zhao
²
,
Zhao
³

et al. 2018
Phys. Rev. C
Self Cite