Sub-barrier fusion of 32S+90,96Zr: semi-classical coupled-channels approach

Zhang, H. Q.; Lin, C. J.; Yang, Fang; Jia, H. M.; Xu, X. X.; Fu, Jia; Wu, Zihao; Zhang, S. T.; H., Liu, Z.; Richard, A.; Beck, C.

doi:10.48550/arxiv.1005.0727

Cited by 2 publications

(19 citation statements)

References 26 publications

(57 reference statements)

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“…We first present the role of inelastic and transfer channel couplings in the experimental data we obtained in the study of fusion reactions induced by stable 32 S projectiles [26]. The breakup coupling in both elastic scattering data and in the fusion data are also shown for weakly bound 6,7 Li projectiles [27,28].…”

Section: Resultsmentioning

confidence: 93%

“…We present the analysis of excitation functions of evaporation residues (ER) cross sections recently measured with high precision. The experiment was performed at the HI-13 tandem accelerator of the China Institute of Atomic Energy (CIAE), Beijing with small energy steps and good statistical accuracy for these reactions [26]. The fusion excitation functions were measured for 32 S + 90 Zr (open circles) and 32 S + 96 Zr (points) are shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…By fitting the experimental fusion excitation function displayed in Fig. 1 with CC calculations [26,33,34], we concluded [35,36] that the effect of the neutron transfer channels produces significant enhancement of the sub-barrier fusion cross sections of 32 S + 96 Zr as compared to 32 S + 90 Zr. A detailed inspection of the 32 S + 90 Zr fusion data presented in Fig.…”

Section: Coupled Channel Analysismentioning

confidence: 94%

“…3.1. 32 S + 90 Zr and 32 S + 96 Zr reactions A new CC computer code named NTFus [33,34,35,36] taking the neutron transfer channels into account in the framework of the semiclassical model of Zagrebaev [10] has been developed. The effect of the neutron transfer channels yields a fairly good agreement with the data of subbarrier fusion cross sections measured for 32 S + 96 Zr, the more neutron-rich reaction [26].…”

Section: Coupled Channel Analysismentioning

confidence: 99%

“…32 S + 90 Zr and 32 S + 96 Zr reactions A new CC computer code named NTFus [33,34,35,36] taking the neutron transfer channels into account in the framework of the semiclassical model of Zagrebaev [10] has been developed. The effect of the neutron transfer channels yields a fairly good agreement with the data of subbarrier fusion cross sections measured for 32 S + 96 Zr, the more neutron-rich reaction [26]. This was initially expected from the positive Q-values of the neutron transfers as well as from the failure of standard CC calculation of quasi-elastic barrier distributions without neutron-transfers coupling [13] as shown by the solid line in Fig.…”

Section: Coupled Channel Analysismentioning

confidence: 99%

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Transfer/Breakup Channel Couplings in Sub-barrier Fusion Reactions

Beck

2013

J. Phys.: Conf. Ser.

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With the recent availability of state-of-the-art radioactive ion beams, there has been a renew interest in the investigation of nuclear reactions with heavy ions near the Coulomb barrier. The role of inelastic and transfer channel couplings in fusion reactions induced by stable heavy ions can be revisited. Detailed analysis of recent experimental fusion cross sections by using standard coupled-channel calculations is first discussed. Multi-neutron transfer effects are introduced in the fusion process below the Coulomb barrier by analyzing 32 S+ 90,96 Zr as benchmark reactions. The enhancement of fusion cross sections for 32 S+ 96 Zr is well reproduced at sub-barrier energies by NTFus code calculations including the coupling of the neutrontransfer channels following the Zagrebaev semi-classical model. Similar effects for 40 Ca+ 90 Zr and 40 Ca+ 96 Zr fusion excitation functions are found. The breakup coupling in both the elastic scattering and in the fusion process induced by weakly bound stable projectiles is also shown to be crucial. In the second part of this work, full coupled-channel calculations of the fusion excitation functions are performed by using the breakup coupling for the more neutron-rich reaction and for the more weakly bound projectiles. We clearly demonstrate that Continuum-Discretized Coupled-Channel calculations are capable to reproduce the fusion enhancement from the breakup coupling in 6 Li+ 59 Co.

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Section: Resultsmentioning

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Section: Coupled Channel Analysismentioning

confidence: 94%

Section: Coupled Channel Analysismentioning

confidence: 99%

Section: Coupled Channel Analysismentioning

confidence: 99%

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Transfer/Breakup Channel Couplings in Sub-barrier Fusion Reactions

Beck

2013

J. Phys.: Conf. Ser.

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Coupled-Channel Effects in Collisions Between Heavy Ions Near the Coulomb Barrier

Beck¹

2013

Exciting Interdisciplinary Physics

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With the recent availability of state-of-the-art heavy-ion stable and radioactive beams, there has been a renew interest in the investigation of nuclear reactions with heavy ions. I first present the role of inelastic and transfer channel couplings in fusion reactions induced by stable heavy ions. Analysis of experimental fusion cross sections by using standard coupled-channel calculations is discussed. The role of multi-neutron transfer is investigated in the fusion process below the Coulomb barrier by analyzing 32 S+ 90,96 Zr as benchmark reactions. The enhancement of fusion cross sections for 32 S+ 96 Zr is well reproduced at sub-barrier energies by NTFus code calculations including the coupling of the neutron-transfer channels following the Zagrebaev semi-classical model. Similar effects for 40 Ca+ 90 Zr and 40 Ca+ 96 Zr fusion excitation functions are found. The breakup coupling in both the elastic scattering and in the fusion process induced by weakly bound stable projectiles is also shown to be crucial. In this lecture, full coupled-channel calculations of the fusion excitation functions are performed by using the breakup coupling for the more neutron-rich reaction and for the more weakly bound projectiles. I clearly demonstrate that Continuum-Discretized Coupled-Channel calculations are capable to reproduce the fusion enhancement from the breakup coupling in 6 Li+ 59 Co.

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Sub-barrier fusion of 32S+90,96Zr: semi-classical coupled-channels approach

Cited by 2 publications

References 26 publications

Transfer/Breakup Channel Couplings in Sub-barrier Fusion Reactions

Transfer/Breakup Channel Couplings in Sub-barrier Fusion Reactions

Coupled-Channel Effects in Collisions Between Heavy Ions Near the Coulomb Barrier

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