Multinucleon transfer reactions were measured in interactions of ²⁸Si with ^90,94Zr at a near barrier energy using recoil mass separator, Heavy Ion Reaction Analyzer (HIRA) at Inter University Accelerator Centre (IUAC), New Delhi. The effects of shell closure, positive Q-value transfer channels on the relative strengths of ground state and excited state transfer in multinucleon transfer processes were investigated. The kinematic coincidence technique was employed to reduce the background. The m/q ambiguity was resolved by time of flight (TOF) technique. Based on the Q-value considerations, it was observed that pickup channels were predominantly of neutron transfer, whereas, stripping channels were mainly of proton transfer. A 14-element BGO array was used to extract the relative strength of excited state transfer. In interactions of ²⁸Si with ⁹⁰Zr, it was observed that the ground state and excited states competes for populating all the transfer channels. In reactions of ²⁸Si with ⁹⁴Zr, nearly similar behavior was observed except for two-neutron pickup channel, where excited state transfer was dominant and four-neutron pickup channel where ground state transfer was dominant.

中文翻译：

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近势垒区 28Si 与 90,94Zr 相互作用中的基态和激发态多核子转移通道

使用新德里大学加速器中心 (IUAC) 的重离子反应分析仪 (HIRA) 的反冲质量分离器，在接近势垒能量的²⁸ Si 与^90,94 Zr的相互作用中测量多核子转移反应。壳闭合的影响，积极的问研究了多核子转移过程中基态和激发态转移相对强度的-值转移通道。采用运动学巧合技术来减少背景。这米/q通过飞行时间（TOF）技术解决了歧义。基于问值考虑，观察到拾取通道主要是中子转移，而剥离通道主要是质子转移。使用 14 元素 BGO 阵列来提取激发态转移的相对强度。在²⁸ Si 与⁹⁰ Zr 的相互作用中，观察到基态和激发态竞争填充所有传输通道。在²⁸ Si 与⁹⁴ Zr 的反应中，观察到几乎相似的行为，除了两个中子拾取通道，其中激发态转移占主导地位和四中子拾取通道，其中基态转移占主导地位。