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Tripathi, Vandana; Baby, L. T.; Das, J. J.; Sugathan, P.; Madhavan, N.; Sinha, A. K.; Rao, P. V. Madhusudhana; Hui, SK; Singh, Raghuvir; Hagino, K.

doi:10.1103/physrevc.65.014614

Cited by 61 publications

(19 citation statements)

References 30 publications

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“…7 and 8, we display the fusion cross-sections σ f us (in mb) as a function of center-of-mass energy E cm for the reactions of 48 Ca + 96 Zr [10], 28 Si + 92 Zr [59], 12 C + 92 Zr [59], 16 O + 208 Pb [60] (in Fig. 7) and 16 O + 50 Ti [61], 16 O + 112 Sn [49], 16 O + 116 Sn [49], and 16 O + 120 Sn [55] (in Fig. 8).…”

Section: Resultsmentioning

confidence: 99%

Comparison of different proximity potentials for asymmetric colliding nuclei

2010

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Using the different versions of phenomenological proximity potential as well as other parametrizations within the proximity concept, we perform a detailed comparative study of fusion barriers for asymmetric colliding nuclei with asymmetry parameter as high as 0.23. In all, 12 different proximity potentials are robust against the experimental data of 60 reactions. Our detailed study reveals that the surface energy coefficient as well as radius of the colliding nuclei depend significantly on the asymmetry parameter. All models are able to explain the fusion barrier heights within ±10% on the average. The potentials due to Bass 80, AW 95, and Denisov DP explain nicely the fusion cross sections at above-as well as below-barrier energies.

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Section: Resultsmentioning

confidence: 99%

Comparison of different proximity potentials for asymmetric colliding nuclei

2010

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“…Excellent primary beam rejection and clean separation between beamlike particles and ERs enabled us to measure cross sections down to a few microbarns. At 120 MeV (E lab ), HIRA was scanned for charge states, mass, and energy of ERs for both the systems [13,14]. For other incident energies, the HIRA fields were scaled appropriately.…”

Section: Methodsmentioning

confidence: 99%

“…Quite a large enhancement in the sub-barrier heavy ion fusion cross sections (one to two orders of magnitude) over the prediction of 1-d BPM has been observed experimentally [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. This enhancement could be explained in terms of the coupling of relative motion to internal degrees of freedom of the colliding nuclei associated with specific details of the colliding partners such as deformation [4][5][6], vibration [7][8][9][10], and nucleon transfer channels [11][12][13][14] or related to the gross features of nuclear matter such as neck formation [15,16] between the two colliding nuclei. The role of static deformations and collective surface vibrations has been unambiguously established, but the precise effect of transfer channels has been seemingly elusive in most cases.…”

Section: Introductionmentioning

confidence: 98%

Channel coupling effects on the fusion excitation functions forSi28+Zr90,94
Kalkal
¹
,
Mandal
²
,
Madhavan
³

et al. 2010
Phys. Rev. C
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70
1
13
0
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Fusion excitation functions and angular distributions of evaporation residues (ERs) have been measured for 28 Si + 90,94 Zr systems around the Coulomb barrier using the recoil mass spectrometer, Heavy Ion Reaction Analyzer (HIRA). For both systems, the experimental fusion cross sections are strongly enhanced compared to the predictions of the one-dimensional barrier penetration model (1-d BPM) below the barrier. Coupled channels formalism has been employed to theoretically explain the observed sub-barrier fusion cross section enhancement. The enhancement could be explained by considering the coupling of the low-lying inelastic states of the projectile and target in the 28 Si + 90 Zr system. In the sub-barrier region, the measured fusion cross sections for 28 Si + 94 Zr turned out to be about an order of magnitude higher than the ones for the 28 Si + 90 Zr system, which could not be explained by coupling to inelastic states alone. This observation indicates the importance of multinucleon transfer reaction channels with positive Q values in the sub-barrier fusion cross section enhancement, because 90,94 Zr are believed to have similar collective strengths. This implies that no strong isotopic dependence of fusion cross sections is expected as far as the couplings to collective inelastic states are concerned. In addition, the role of projectile and multiphonon couplings in the enhancement has been explored.

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“…4 to Fig. 6 [4,5,34,38,39,40] are also presented for comparison. The solid circles and squares denote the measured fusion cross sections σ fus and large-angle quasi-elastic scattering cross sections, respectively.…”

Section: B Description Of Large-angle Quasi-elastic Scatteringmentioning

confidence: 99%

Quasi-elastic scattering and fusion with a modified Woods-Saxon potential

Wang

Scheid

2008

Phys. Rev. C

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The elastic and large-angle quasi-elastic scattering reactions were studied with the same nucleusnucleus potential proposed for describing fusion reactions. The elastic scattering angle distributions of some reactions are reasonably well reproduced by the proposed Woods-Saxon potential with fixed parameters at energies much higher than the Coulomb barrier. With an empirical barrier distribution based on the modified Woods-Saxon potential and taking into account the influence of nucleons transfer, the calculated quasi-elastic scattering cross sections of a series of reactions are in good agreement with the experimental data.

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Isotopic dependence and channel coupling effects in the fusion of16O+112,116

Cited by 61 publications

References 30 publications

Comparison of different proximity potentials for asymmetric colliding nuclei

Comparison of different proximity potentials for asymmetric colliding nuclei

Channel coupling effects on the fusion excitation functions forSi28+Zr90,94
Kalkal
¹
,
Mandal
²
,
Madhavan
³

et al. 2010
Phys. Rev. C
Self Cite
70
1
13
0
View full text Add to dashboard Cite

Quasi-elastic scattering and fusion with a modified Woods-Saxon potential

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Isotopic dependence and channel coupling effects in the fusion of16O+112,116

Cited by 61 publications

References 30 publications

Comparison of different proximity potentials for asymmetric colliding nuclei

Comparison of different proximity potentials for asymmetric colliding nuclei

Channel coupling effects on the fusion excitation functions forSi28+Zr90,94Kalkal1, Mandal2, Madhavan3 et al. 2010Phys. Rev. CSelf Cite701130View full textAdd to dashboardCite

Quasi-elastic scattering and fusion with a modified Woods-Saxon potential

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Product

Resources

About

Channel coupling effects on the fusion excitation functions forSi28+Zr90,94
Kalkal
¹
,
Mandal
²
,
Madhavan
³

et al. 2010
Phys. Rev. C
Self Cite
70
1
13
0
View full text Add to dashboard Cite