Multinucleon transfer study in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Pb</mml:mi><mml:mprescripts /><mml:none /><mml:mn>206</mml:mn></mml:mmultiscripts><mml:mo>(</mml:mo><mml:mmultiscripts><mml:mi mathvariant="normal">O</mml:mi><mml:mprescripts /><mml:none /><mml:mn>18</mml:mn></mml:mmultiscripts><mml:mo>,</mml:mo><mml:mi>x</mml:mi><mml:mo>)</mml:mo></mml:math>at energies above the Coulomb barrier

Sonika, Sonika; Roy, B. J.; Parmar, A.; Pal, Usha; Kumawat, H.; Jha, V.; Pandit, S. K.; Parkar, V. V.; Ramachandran, K.; Mahata, K.; Pal, A.; Santra, S.; Mohanty, A. K.; Sekizawa, Kazuyuki

doi:10.1103/physrevc.92.024603

Cited by 24 publications

(53 citation statements)

References 53 publications

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“…[53], we have extended the PNP method to evaluate expectation values of operators. Recently, we applied our method to an asymmetric system, 18 O+ 206 Pb, at energies above the barrier [54]. Recently, QF processes have been investigated by the TDHF theory [55][56][57][58][59][60][61][62].…”

Section: Introductionmentioning

confidence: 99%

Time-dependent Hartree-Fock calculations for multinucleon transfer and quasifission processes in theNi64+U238reaction

2016

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Background: Multinucleon transfer (MNT) and quasifission (QF) processes are dominant processes in lowenergy collisions of two heavy nuclei. They are expected to be useful to produce neutron-rich unstable nuclei. Nuclear dynamics leading to these processes depends sensitively on nuclear properties such as deformation and shell structure.Purpose: We elucidate reaction mechanisms of MNT and QF processes involving heavy deformed nuclei, making detailed comparisons between microscopic time-dependent Hartree-Fock (TDHF) calculations and measurements for the 64 Ni+ 238 U reaction.Methods: Three-dimensional Skyrme-TDHF calculations are performed. Particle-number projection method is used to evaluate MNT cross sections from the TDHF wave function after collision.Results: Fragment masses, total kinetic energy (TKE), scattering angle, contact time, and MNT cross sections are investigated for the 64 Ni+ 238 U reaction. They show reasonable agreements with measurements. At small impact parameters, collision dynamics depends sensitively on the orientation of deformed 238 U. In tip (side) collisions, we find a larger (smaller) TKE and a shorter (longer) contact time. In tip collisions, we find a strong influence of quantum shells around 208 Pb.Conclusions: It is confirmed that the TDHF calculations reasonably describe both MNT and QF processes in the 64 Ni+ 238 U reaction. Analyses of this system indicate the significance of the nuclear structure effects such as deformation and quantum shells in nuclear reaction dynamics at low energies.

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Section: Introductionmentioning

confidence: 99%

Time-dependent Hartree-Fock calculations for multinucleon transfer and quasifission processes in theNi64+U238reaction

2016

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“…The method has been generalized for calculation where one of the fragment is in the superfluid phase [4]. This method can be used to understand the excitation energy in transfer channel [31,32]. In this contribution, we use the mixing of TDHFB trajectories to compute the transfer probabilities in reactions where both fragments are initially superfluid.…”

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confidence: 99%

Transfer probabilities for the reactions O14,20+O20 in terms of multiple time-dependent Hartree-Fo

Scamps

Hashimoto

2017

Phys. Rev. C

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The transfer reaction between two nuclei in the superfluid phase is studied with the Timedependent Hartree-Fock-Bogoliubov (TDHFB) theory. In order to restore the symmetry of the relative gauge angle a set of independent TDHFB trajectories is taken into account. Then, the transfer probability is computed using a triple projection method. This method is first tested to determine the transfer probabilities on a toy model and compared to the exact solution. It is then applied to the reactions 20 O+

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“…In the present work, we investigate the production cross sections and transfer mechanisms in the reaction 58 Ni+ 124 Sn to testify the applicability of microscopic approach TDHF+GEMINI in multinucleon transfer. The production cross sections in multinucleon transfer reaction 58 Ni + 124 Sn have been measured in ANL experiment at center-of-mass (c.m.) energies of 150, 153, 157, and 160.6 MeV [99], at which the theoretical studies are performed.…”

Section: Resultsmentioning

confidence: 99%

“…energies of 150, 153, 157, and 160.6 MeV [99], at which the theoretical studies are performed. It should be noted that the experiment utilized the inverse kinematics method with a 124 Sn beam bombarding a 58 Ni target. We employ the microscopic TDHF with Skyrme SLy5 parameter set [100] in the calculations, in which all the timeeven and time-odd terms in the mean-field Hamiltonian are included in our code.…”

Section: Resultsmentioning

confidence: 99%

Microscopic studies of production cross sections in multinucleon transfer reaction Ni58+Sn124

Guo

2019

Phys. Rev. C

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Background: Multinucleon transfer reaction at low-energy collisions is considered to be a promising method for the production of new exotic nuclei, which are difficult to be produced by other methods. The theoretical studies are required to provide reliable predictions for the experiments and promote the understanding of the microscopic mechanism in multinucleon transfer reactions. Purpose: We provide a predictive approach for production cross sections, and testify how and to what extent the microscopic approach works well in multinucleon transfer reaction. Methods: We employ the approach TDHF+GEMINI, which combines the microscopic time-dependent Hartree-Fock (TDHF) with the state-of-art statistical model GEMINI++, to take into account both the multinucleon transfer dynamics and the secondary deexcitation process. The properties of primary products in multinucleon transfer process, such as transfer probabilities and primary cross sections, are extracted from TDHF dynamics by using the particle-number projection method. Production cross sections for secondary products are evaluated by using the statistical model GEMINI++.Results: We investigate the influence of colliding energies and deformation orientations of target and projectile nuclei on multinucleon transfer dynamics in the reaction 58 Ni+ 124 Sn. More nucleons are observed to transfer in the tip collision as compared to the side collision. The production cross sections for secondary fragments with TDHF+GEMINI calculations well reproduce the experimental measurements at energies close to the Coulomb barrier. At sub-barrier energy, the theoretical results gradually deviate from the experimental data as the increase of the number of transferred neutrons, implying the limitations of a single mean-field approximation in TDHF approach. Possible origins for this discrepancy are discussed. The total cross sections integrated over all the neutron pickup channels are in good agreement with the experimental data for all the energies. We compare the production cross sections of TDHF+GEMINI calculations with those from GRAZING model, and find that our approach gives a quantitatively good description as the semiclassical model, although there is no adjustable parameters for the reaction dynamics in the microscopic TDHF method. Conclusions: The microscopic approach TDHF+GEMINI reasonably reproduces the experimental data at energies close to the Coulomb barrier and well accounts for the multinucleon transfer mechanism. The present studies clearly reveal the applicability of TDHF+GEMINI method in multinucleon transfer reactions, which thus deserves as a promising tool to predict the properties of new reactions. * luguo@ucas.ac.cn hance the yield of exotic nuclei for an appropriate projectiletarget combination. To produce the new unstable isotopes experimentally, the optimal incident energy and projectile-target combination should be chosen to have the highest product cross section for the desired isotope. The reliable theoretical predictions are therefore required to guide ...

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Multinucleon transfer study inPb206(O18,x)at energies above the Coulomb barrier

Cited by 24 publications

References 53 publications

Time-dependent Hartree-Fock calculations for multinucleon transfer and quasifission processes in theNi64+U238reaction

Time-dependent Hartree-Fock calculations for multinucleon transfer and quasifission processes in theNi64+U238reaction

Transfer probabilities for the reactions O14,20+O20 in terms of multiple time-dependent Hartree-Fo

Microscopic studies of production cross sections in multinucleon transfer reaction Ni58+Sn124

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