Elastic scattering in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mrow><mml:mn>6</mml:mn><mml:mo>,</mml:mo><mml:mn>7</mml:mn></mml:mrow></mml:msup></mml:math>Li<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mn>80</mml:mn></mml:msup></mml:math>Se systems

Fimiani, L.; Figueira, J. M.; Martí, G. V.; Testoni, J. E.; Pacheco, A. J.; Cárdenas, W. H. Z.; Arazi, A.; Capurro, O. A.; Cardona, M. A.; Carnelli, P. F. F.; Barbará, E. de; Hojman, D.; Heimann, D. Martinez; Negri, A. E.

doi:10.1103/physrevc.86.044607

Cited by 32 publications

(35 citation statements)

References 60 publications

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“…Left panel: The strengths of the real (b) and imaginary (a) parts of the optical potential at the distance of maximal absorption, R M , in collisions of6 Li projectiles with the 80 Se target[107]; Right panel: the same as in the left panel but for a 144 Sm target[112]. Source: For detail, see the original papers[107,112].…”

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confidence: 97%

Recent developments in fusion and direct reactions with weakly bound nuclei

et al. 2015

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confidence: 97%

Recent developments in fusion and direct reactions with weakly bound nuclei

et al. 2015

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“…The strength of real part also decreases. This has already been argued in several articles [15][16][17][18][19][20][21][22][23][24][25][26]. However, authors Rodrigo et al in recent article [27] have argued the Threshold Anomaly (TA) for weakly bound projectile system like 6 Li + 209 Bi and 6 He + 208 Pb, contrary to the observations in other references.…”

Section: Introductionmentioning

confidence: 90%

Study of threshold anomaly in elastic scattering of $^{14}$N by $^{56}$Fe and $^{90}$Zr

K.¹,

Senapati²,

Sahu³

et al. 2022

Preprint

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We use a phenomenological nucleus-nucleus optical potential constructed in the light of a potential developed by Ginocchio[1] to study the elastic angular distributions of different nuclear systems near Coulomb barrier. The differential cross section ratios of elastic to Rutherford are studied for systems 14 N+ 56 Fe and 14 N+ 90 Zr for several colliding energies. Our theoretical predictions are well competitive with the experimental data, and the significantly small imaginary part of the potential explains the elastic scattering cross section and threshold anomaly in both systems.

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“…For example, for the tightly bound system 16 O + 208 Pb, the threshold energy can be determined easily as about 0.93V B [3]. For the stable weakly bound nucleus 6 Li, on the other hand, the decreasing trend of the imaginary potential was observed only in a few medium-mass target systems, such as 6 Li + 80 Se [20] and 6 Li + 144 Sm [21], with a threshold energy of about 0.76V B and 0.81V B , respectively. However, for a heavy target system as investigated in the present work, no similar result has been reported so far, because the imaginary potential still presents an increasing trend at the lowest energies, such as 0.86V B for 6 Li + 208 Pb [46] and 0.94V B for 9 Be + 209 Bi [47].…”

Section: Energy Dependence Of the Omp Of 6 He + 209 Bimentioning

confidence: 99%

“…However, because of the large data uncertainties as well as the lack of enough data points [11,16], it is nearly impossible to investigate the optical potentials of halo systems in the subbarrier region directly with low-intensity radioactive ion beams. Even for stable weakly bound systems, we are still far from a clear understanding of the properties of OMPs, e.g., the behavior of the potential in the deep subbarrier region leaves much to be desired [5,20,21], and the application of the dispersion relation is still debatable [4,17,18,22].…”

Section: Introductionmentioning

confidence: 99%

Abnormal behavior of the optical potential for the halo nuclear system He6+Bi209

et al. 2017

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In a recent transfer reaction measurement of 208 Pb(7 Li, 6 He) 209 Bi at energies around and below the Coulomb barrier, the optical model potentials of the halo nuclear system 6 He + 209 Bi were extracted by fitting the experimental data with the theoretical frameworks of the distorted-wave Born approximation and coupled reaction channels, respectively. With the high-precision result, a complete picture of the behavior of the optical potential for this halo system is clearly derived for the first time. The real potential presents a bell-like shape around the barrier as a normal threshold anomaly. However, for the imaginary part, it first increases with the energy decreasing below the barrier and then falls quickly to 0, hence the threshold energy can be determined by fitting the variation trend. Moreover, the result also provides some evidence that the dispersion relation does not hold for this halo nuclear system, which calls for further investigation of the underlying physics.

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Elastic scattering in the6,7Li+80Se systems

Cited by 32 publications

References 60 publications

Recent developments in fusion and direct reactions with weakly bound nuclei

Recent developments in fusion and direct reactions with weakly bound nuclei

Study of threshold anomaly in elastic scattering of $^{14}$N by $^{56}$Fe and $^{90}$Zr

Abnormal behavior of the optical potential for the halo nuclear system He6+Bi209

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