Synthesis of Transuranium Nuclei in Multinucleon Transfer Reactions at Near-Barrier Energies

Карпов, А. В.; Saiko, V. V.

doi:10.1134/s1547477119060475

Cited by 9 publications

(3 citation statements)

References 12 publications

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“…To simulate the trajectories of the reaction products, the differential cross-section, the emitting angle from the target, the kinetic energy, and the charge-states of the ions of interest are required as input data. The differential cross-section of the various isotopes, the emitting angle, and the kinetic energies of the ions are taken from predictions made by a dynamical model based on the Langevin equations [21,22]. This model provides a continuous description of the time evolution of the system of colliding nuclei, starting from the approaching stage of the projectile and the target in the entrance channel of the reaction, and up to the formation of the final reaction products.…”

Section: The Solenoid Separatormentioning

confidence: 99%

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The NEXT Project: Towards Production and Investigation of Neutron-Rich Heavy Nuclides

Even

Chen

Soylu

et al. 2022

Atoms

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The heaviest actinide elements are only accessible in accelerator-based experiments on a one-atom-at-a-time level. Usually, fusion–evaporation reactions are applied to reach these elements. However, access to the neutron-rich isotopes is limited. An alternative reaction mechanism to fusion–evaporation is multinucleon transfer, which features higher cross-sections. The main drawback of this technique is the wide angular distribution of the transfer products, which makes it challenging to catch and prepare them for precision measurements. To overcome this obstacle, we are building the NEXT experiment: a solenoid magnet is used to separate the different transfer products and to focus those of interest into a gas-catcher, where they are slowed down. From the gas-catcher, the ions are transferred and bunched by a stacked-ring ion guide into a multi-reflection time-of-flight mass spectrometer (MR-ToF MS). The MR-ToF MS provides isobaric separation and allows for precision mass measurements. In this article, we will give an overview of the NEXT experiment and its perspectives for future actinide research.

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Section: The Solenoid Separatormentioning

confidence: 99%

“…For the simulations, we focused on the medium-mass projectile 48 Ca. However, as day-one experiments, we plan to also use beams that are easier to develop, such as 18 O and 22 Ne. After commissioning, we plan to focus on the masses and fission half-lives of the neutron-rich isotopes in the transfermium region.…”

Section: Status and Planned Experimental Programmentioning

confidence: 99%

The NEXT Project: Towards Production and Investigation of Neutron-Rich Heavy Nuclides

Even

Chen

Soylu

et al. 2022

Atoms

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“…Several theoretical models, such as a Langevin-type approach [16][17][18][19], the improved quantum molecular dynamics (ImQMD) model [20][21][22], the time-dependent Hartree-Fock approach [23][24][25][26], GRAZING [27,28], and the dinuclear system (DNS) model [29][30][31][32][33][34][35][36][37], have been applied to study the mechanism of MNT reactions. As an important method, the DNS model has been improved remarkably.…”

Section: Introductionmentioning

confidence: 99%

Selection of projectiles for producing trans-uranium nuclei in transfer reactions within the improved dinuclear system model

Zhu

2020

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

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The multinucleon transfer process is one promising approach for producing neutron-rich heavy nuclei. The favorable projectile-target combinations play a key role in experiments. As one important approach to investigate the multinucleon transfer process, one new version of the dinuclear system (DNS) model is developed. The improved version of the DNS model is shown in detail. Based on deformation degree of freedom in the improved DNS model, one way of calculating excitation energies of primary fragments is proposed. And the remarkable improvements for describing experimental data of producing trans-uranium nuclei is noticed. To produce trans-uranium nuclei, the collisions of 48 Ca, 136 Xe, and 238 U projectiles with the 238 U target are investigated within the improved DNS model. Based on the potential energy surface, the influence of projectiles on the probabilities of transferring neutrons and protons from the projectiles to the target are studied. One behavior is found that the transfer probabilities strongly depend on the projectiles in the neutron stripping process, while relatively weak projectile dependence is noticed in the proton transferring process. The 136 Xe and 238 U projectiles show great advantages of cross sections for producing neutron-rich trans-uranium nuclei, although the fission probabilities are large.

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Heaviest Elements: Decay and Laser Spectroscopy

Block

Raeder²,

Herzberg

2022

Handbook of Nuclear Physics

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Synthesis of Transuranium Nuclei in Multinucleon Transfer Reactions at Near-Barrier Energies

Cited by 9 publications

References 12 publications

The NEXT Project: Towards Production and Investigation of Neutron-Rich Heavy Nuclides

The NEXT Project: Towards Production and Investigation of Neutron-Rich Heavy Nuclides

Selection of projectiles for producing trans-uranium nuclei in transfer reactions within the improved dinuclear system model

Heaviest Elements: Decay and Laser Spectroscopy

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