Role of tunnelling in complete and incomplete fusion induced by 9 Be on 169 Tm and 187 Re targets at around barrier energies

Kharab, Rajesh; Chahal, Rajiv; Kumar, Rajiv

doi:10.1016/j.nuclphysa.2017.01.006

Cited by 9 publications

(10 citation statements)

References 22 publications

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“…There has been a recent attempt to amend this classical model by adding a correction at sub-and near-barrier energies, to take into account quantum tunneling. This was done by incorporating a tunneling factor based on the wkb approximation [340]. This improved the results outputted from the model, relative to experimental sub-barrier fusion measurements [340].…”

Section: Incomplete Fusion Of Light Weakly Bound Nucleimentioning

confidence: 99%

“…This was done by incorporating a tunneling factor based on the wkb approximation [340]. This improved the results outputted from the model, relative to experimental sub-barrier fusion measurements [340]. Additional modifications have recently been suggested for interpreting sub-barrier breakup measurements [323,324].…”

Section: Incomplete Fusion Of Light Weakly Bound Nucleimentioning

confidence: 99%

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How to extend the chart of nuclides?

et al. 2020

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In the past 85 years the number of known nuclides increased by more than a factor of ten, resulting in 4000 presently known isotopes of 118 elements. This considerable progress we owe to the discovery of new reaction types along with the development of powerful accelerators and experimental techniques for separation and identification of reaction products. Model predictions indicate that still about 4000 further nuclides are waiting for their discovery. The vastest unexplored territory is located on the neutron-rich side in the upper half of the chart of nuclides and hides the answers to some of the most fundamental questions of nuclear physics like the limits of nuclear stability, element synthesis in the universe or stellar evolution. The access to these nuclei is presently limited by available beam intensities and/or the lack of appropriate methods for their production and identification. The latter concerns particularly new neutron-rich isotopes of transuranium and superheavy elements. To extend this area, the hope is presently based on multinucleon transfer reactions and on the application of fusion reactions with radioactive ion beams. But how promising are these approaches? Based on a survey of present-day knowledge, we will treat the questions where we currently are on our journey towards new territory on the chart of nuclides, how the chances are to gain new territory in the future and which challenges we will have to face.

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Section: Incomplete Fusion Of Light Weakly Bound Nucleimentioning

confidence: 99%

Section: Incomplete Fusion Of Light Weakly Bound Nucleimentioning

confidence: 99%

How to extend the chart of nuclides?

et al. 2020

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show abstract

“…There has been a recent attempt to amend this classical model by adding a correction at sub-and near-barrier energies, to take into account quantum tunneling. This was done by incorporating a tunneling factor based on the wkb approximation [23]. This improved the results outputted from the model, relative to experimental subbarrier fusion measurements [23].…”

mentioning

confidence: 99%

“…This was done by incorporating a tunneling factor based on the wkb approximation [23]. This improved the results outputted from the model, relative to experimental subbarrier fusion measurements [23]. Additional modifications have been suggested for interpreting sub-barrier breakup measurements [12].…”

mentioning

confidence: 99%

Effects of unconventional breakup modes on incomplete fusion of weakly bound nuclei

Díaz-Torres

Quraishi

2018

Phys. Rev. C

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The incomplete fusion dynamics of 6 Li + 209 Bi collisions at energies above the Coulomb barrier is investigated. The classical dynamical model implemented in the platypus code is used to understand and quantify the impact of both 6 Li resonance states and transfer-triggered breakup modes (involving short-lived projectile-like nuclei such as 8 Be and 5 Li) on the formation of incomplete fusion products. Model calculations explain the experimental incomplete-fusion excitation function fairly well, indicating that (i) delayed direct breakup of 6 Li reduces the incomplete fusion cross-sections, and (ii) the neutron-stripping channel practically determines those cross-sections.

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“…This allows us to address the effect of the interaction between the remaining fragment and the fusing α-particle on the angular momentun brought into 212 Po by the α particle. In addtion to several light two-body weakly-bound projectiles, the complex 20 Ne projectile is employed in this systematic study, assuming that it is made of 16 O and an α-particle. In reality, other competing binary cluster configurations of 20 Ne may be important, but their treatment requires an extended dynamical reaction model [15], with which the ICF of other complex projectiles such as 12 C and 16 O can be addressed.…”

Section: Introductionmentioning

confidence: 99%

Populating high spin states of a compound nucleus with the incomplete fusion mechanism: the effectiveness of heavy projectiles

Lee¹,

Díaz-Torres²

2019

J. Phys. G: Nucl. Part. Phys.

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Using a classical dynamical reaction model, angular momentum (L) values of a compound nucleus due to incomplete fusion (ICF) at energies near and above the Coulomb barrier are studied. In this model, a projectile consisting of two cluster nuclei is fired at a stationary target nucleus. After breakup of the projectile due to Coulombic and nuclear forces, an α-cluster fuses with a 208Pb target, forming an excited 212Po compound nucleus. Results show that all ICF reactions produced higher angular momentum in the compound nucleus compared to a direct beam of α particles at the same incident energy. The highest angular momentum values produced in 212Po for near and above Coulomb barrier energies were obtained using a 20Ne projectile at and , respectively. This produced 25% and 50% L values above the next highest-Z projectile used, 8Be, respectively.

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Role of tunnelling in complete and incomplete fusion induced by 9 Be on 169 Tm and 187 Re targets at around barrier energies

Cited by 9 publications

References 22 publications

How to extend the chart of nuclides?

How to extend the chart of nuclides?

Effects of unconventional breakup modes on incomplete fusion of weakly bound nuclei

Populating high spin states of a compound nucleus with the incomplete fusion mechanism: the effectiveness of heavy projectiles

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