Possibilities of direct production of superheavy nuclei with Z=112--118 in different evaporation channels

TL;DR

This paper predicts the production cross sections of superheavy nuclei with Z=112--118 in various evaporation channels using a comprehensive nuclear data approach, aiding future experimental synthesis of new isotopes.

Contribution

It introduces a unified method to estimate superheavy nuclei production in different channels, incorporating detailed nuclear data and advanced modeling techniques.

Findings

Predicted cross sections align well with existing experimental data.

Proposed new channels for synthesizing superheavy isotopes with proton and alpha emission.

Identified promising reactions with measurable cross sections for future experiments.

Abstract

The production cross sections of heaviest isotopes of superheavy nuclei with charge numbers 112--118 are predicted in the $xn$--, $pxn$--, and $\alpha xn$--evaporation channels of the $^{48}$Ca-induced complete fusion reactions for future experiments. The estimates of synthesis capabilities are based on a uniform and consistent set of input nuclear data. Nuclear masses, deformations, shell corrections, fission barriers, and decay energies are calculated within the macroscopic-microscopic approach for even-even, odd-Z, and odd-N nuclei. For odd systems, the blocking procedure is used. To find, the ground states via minimization and saddle points using Immersion Water flow technique, multidimensional deformation spaces, containing non-axially are used. As shown, current calculations based on a new set of mass and barriers, agree very well with experimentally known cross-sections, especially in the $3n$--evaporation channel. The dependencies of these predictions on the mass/fission barriers tables and fusion models are discussed. A way is shown to produce directly unknown superheavy isotopes in the $1n$-- or $2n$--evaporation channels. The synthesis of new superheavy isotopes unattainable in reactions with emission of neutrons is proposed in the promising channels with emission of protons ($\sigma_{pxn} \simeq 10-200$ fb) and alphas ($\sigma_{\alpha xn} \simeq 5-500$ fb).