In this paper, we theoretically investigate 21 projectile-target combinations of stable isotopes for the pre-synthesis parameters and production cross sections of the unknown superheavy 309,312126 nuclei. It is found that 61Ni + 248Cf and 64Ni + 248Cf combinations are the best candidates for the synthesis of the 309,312126 isotopes due to their largest cross sections of 0.03 and 3.6 pb, respectively. Besides, the results in the present and previous works indicate that the uncertainty, from pb to zb, in the synthesis cross sections of superheavy nuclei should be narrowed for a decision of measurements using the presently available facilities. This study, thus, provides valuable data for the synthesis of 126th element.

中文翻译：

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未知超重 309,312126 核的可能合成

在本文中，我们从理论上研究了未知超重 309,312126 原子核的预合成参数和生产截面的 21 种稳定同位素的射弹-靶标组合。发现 61Ni + 248Cf 和 64Ni + 248Cf 组合是合成 309,312126 种同位素的最佳候选，因为它们的最大横截面分别为 0.03 和 3.6 pb。此外，目前和以前的工作结果表明，超重核合成截面中从 pb 到 zb 的不确定性应该缩小，以便使用目前可用的设施进行测量的决定。因此，该研究为第 126 元素的合成提供了有价值的数据。