【摘 要】
：
Nucleon momentum distribution (NMD),particularly its high-momentum components,is essential for understanding the nucleon-nucleon (NN) correlations in nuclei.Herein,we develop the studies of NMD of 56Fe from the axially deformed relativistic mean-field (RM
【机 构】
：
College of Science,China University of Petroleum (East China),Qingdao 266580,China;College of Electr
【出 处】
：
中国科学：物理学 力学 天文学（英文版）
论文部分内容阅读
Nucleon momentum distribution (NMD),particularly its high-momentum components,is essential for understanding the nucleon-nucleon (NN) correlations in nuclei.Herein,we develop the studies of NMD of 56Fe from the axially deformed relativistic mean-field (RMF) model.Moreover,we introduce the effects of NN correlation into the RMF model from phenomenological models basing on deuteron and nuclear matter.For the region k ＜ kF,the effects of deformation on the NMD of the RMF model are investigated using the total and single-particle NMDs.For the region k ＞ kF,the high-momentum components of the RMF model are modified by the effects of NN correlation,which agree with the experimental data.Comparing the NMD of relativistic and non-relativistic mean-field models,the relativistic effects on nuclear structures in momentum space are analyzed.Finally,by analogizing the tensor correlations in deuteron and Jastrow-type correlations in nuclear matter,the behaviors and contributions of NN correlations in 56Fe are further analyzed,which helps clarify the effects of the tensor force on the NMD of heavy nuclei.
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