Fusion cross sections in systems leading to<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Hf</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>170</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>at near-barrier energies

Gil, S.; Hasenbalg, F.; Testoni, J. E.; Abriola, D.; Berisso, M. C.; Tada, M.; Etchegoyen, A.; Niello, J. O. Fernández; Pacheco, A. J.; Charlop, A.; Sonzogni, A. A.; Vandenbosch, R.

doi:10.1103/physrevc.51.1336

Cited by 33 publications

(8 citation statements)

References 22 publications

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“…3). The entrance channel effect was not observed for non-fissile nuclei at the Coulomb energies, as shown for the reactions leading to the 164 Yb * [20] and 170 Hf * [21] compound nuclei with the fissility x ∼ 0.6. Such behavior does not follow the LD picture, since the BG plateau is observed at x 0.4 [5,7].…”

mentioning

confidence: 60%

Search for fusion suppression in reactions having entrance-channel mass-asymmetry values around the Businaro-Gallone point

Sagaidak¹,

Chizhov²,

Itkis³

et al. 2006

AIP Conference Proceedings

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Available data on evaporation residue (ER) production and fission in a wide region of compound nucleus (CN) masses and entrance-channel mass-asymmetry values have been analyzed in search for the "starting point", where the fusion suppression due to the quasi-fission (QF) effect starts to show up. Comparing cross sections for the ER production and fission in reactions leading to the same CN, but having different values of entrance-channel mass-asymmetry, one can extract the fusion probability for a more symmetric combination with respect to quite an asymmetric one, where no limitation seems to occur. An attempt to find correlations between the fusion probabilities derived for the considered combinations and some entrance-channel characteristics is undertaken.The heavy ER production demonstrates a visible entrance channel effect of fusion suppression in quite asymmetric combinations of interacting nuclei. Such fusion suppression is quite unexpected, especially for the reaction induced by 19 F and 22 Ne [1, 2], since the QF effect, which is responsible for the lowering of the ER production cross section, appears in reactions with Mg and heavier projectiles, as follows from the fission reaction studies [3,4]. An explanation of the fusion suppression effect was proposed in [1], in the framework of the liquid-drop (LD) model. It is suggested that a transition from the contact configuration to the CN configuration is determined by an existence of the conditional barrier along the mass-asymmetry coordinate [5], or the entrancepoint position with respect to the Businaro-Gallone (BG) point [6]. Extrapolations in [1] of calculations [5] show that the mass-asymmetry values for the F + Au and Ne + Pt combinations leading to the Ra * compound nuclei are in the vicinity of the BG point. Calculations in the framework of the Generalized Liquid-Drop Model (GLDM) [7] show a similar behavior of the asymmetric fission barriers, which implies that the fusion suppression is starting to appear in the reactions with Ne and heavier projectiles.It is of interest to search for correlations between the heights of the asymmetric fission barrier or the entrance-channel mass-asymmetry values and the fusion probability values

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mentioning

confidence: 60%

Search for fusion suppression in reactions having entrance-channel mass-asymmetry values around the Businaro-Gallone point

Sagaidak¹,

Chizhov²,

Itkis³

et al. 2006

AIP Conference Proceedings

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“…The experimental data (symbols) are from Refs. [52][53][54]. The following quadrupole deformation parameters are used: β2( 30 Si)=0.315 [31], β2( 140 Ce)=0.1012 [31], β2( 196 Pt)=0.1296 [31], and β2( 206 Pb)=0.…”

Section: B Effect Of Neutron Transfermentioning

confidence: 99%

Effects of nuclear deformation and neutron transfer in capture processes, and fusion hindrance at deep sub-barrier energies

et al. 2011

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The roles of nuclear deformation and neutron transfer in sub-barrier capture process are studied within the quantum diffusion approach. The change of the deformations of colliding nuclei with neutron exchange can crucially influence the sub-barrier fusion. The comparison of the calculated capture cross section and the measured fusion cross section in various reactions at extreme subbarrier energies gives us information about the fusion and quasifission.

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“…The fitted experimental fusion cross-section for 48 Ti + 122 Sn system is shown in Figure 1. The quality of fit in the present CC calculation is similar to the one obtained in [5] from the code CCDEF [10]. We have performed the CC calculation at each energy point and fitted the fusion cross-section by adjusting the potential adjustable parameters.…”

Section: Coupled Channel Calculationsmentioning

confidence: 61%

“…Our aim was to choose the system for which experimental data on ER and fission cross-section is already available. In the present work, we have chosen a 48 Ti + 122 Sn system for theoretical calculations because experimental data on an ER cross-section [5] and fission cross-section [6] are available. Theoretical calculations performed using statistical model code [7].…”

Section: Introductionmentioning

confidence: 99%

Statistical model calculations for evaporation residue and fission cross-section for⁴⁸Ti +¹²²Sn system

Sharma

Behera

Pal³

et al. 2015

EPJ Web of Conferences

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Abstract. Statistical model calculations are performed for 48 Ti + 122 Sn system to reproduce the experimentally available evaporation residue (ER) and fission cross-section data using the spin distribution obtained from the CCFULL code after fitting the experimental fusion cross-section at every energy point. For this, the fission barrier (B f ) is scaled by a scaling factor (K f ) in the statistical model code input which varies in the range of 0.5 to 1.0.

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Fusion cross sections in systems leading toHf170at near-barrier energies

Cited by 33 publications

References 22 publications

Search for fusion suppression in reactions having entrance-channel mass-asymmetry values around the Businaro-Gallone point

Search for fusion suppression in reactions having entrance-channel mass-asymmetry values around the Businaro-Gallone point

Effects of nuclear deformation and neutron transfer in capture processes, and fusion hindrance at deep sub-barrier energies

Statistical model calculations for evaporation residue and fission cross-section for⁴⁸Ti +¹²²Sn system

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Fusion cross sections in systems leading toHf170at near-barrier energies

Cited by 33 publications

References 22 publications

Search for fusion suppression in reactions having entrance-channel mass-asymmetry values around the Businaro-Gallone point

Search for fusion suppression in reactions having entrance-channel mass-asymmetry values around the Businaro-Gallone point

Effects of nuclear deformation and neutron transfer in capture processes, and fusion hindrance at deep sub-barrier energies

Statistical model calculations for evaporation residue and fission cross-section for48Ti +122Sn system

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Product

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Statistical model calculations for evaporation residue and fission cross-section for⁴⁸Ti +¹²²Sn system