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Superatomic Signature and Reactivity of Silver Clusters with Oxygen:Double Magic Ag_(17)^– with Geometric and Electronic shell closure

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CCS Chemistry 2021年第12期3卷 219-229页

作者： Baoqi Yin Qiuying Du Lijun Geng Hanyu Zhang Zhixun Luo Si Zhou Jijun Zhao State Key Laboratory for Structural Chemistry of Unstable and Stable Species Institute of ChemistryChinese Academy of SciencesBeijing 100190 University of Chinese Academy of Sciences Beijing 100049 Key Laboratory of Materials Modification by Laser Ion and Electron BeamsMinistry of EducationDalian University of TechnologyDalian 116024

Understanding the stability and reactivity of silver clusters toward oxygen provides insights to design new materials of coinage metals with atomic ***,we report a systematic study on anionic silver clusters,Ag_(n)^(−)(n=10-34),by reacting them with O_(2) under multiple-collision *** spectrometry observation presents the odd-even alternation effect on the reaction rates of these Agn−clusters.

关键词： metal cluster superatom gas-phase reaction Ag_(17)^– shell closure

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Systematic study of theαdecay preformation factors of the nuclei around the Z=82,N=126 shell closures within the generalized liquid drop model

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Chinese Physics C 2020年第9期44卷 130-141页

作者： Hong-Ming Liu You-Tian Zou Xiao Pan Xiao-Jun Bao Xiao-Hua Li School of Nuclear Science and Technology University of South ChinaHengyang 421001China Hunan Normal University Changsha 410081China Cooperative Innovation Center for Nuclear Fuel Cycle Technology&Equipment University of South ChinaHengyang 421001China Key Laboratory of Low Dimensional Quantum Structures and Quantum Control Hunan Normal UniversityChangsha 410081China

In this study,we systematically investigate theαdecay preformation factors,Pα,and theαdecay half-lives of 152 nuclei around Z=82,N=126 closed shells based on the generalized liquid drop model(GLDM)with Pαbeing extracted from the ratio of the calculatedαdecay half-life to the experimental *** results show that there is a remarkable linear relationship between Pαand the product of valance protons(holes)Np and valance neutrons(holes)*** the same time,we extract theαdecay preformation factor values of the even–even nuclei around the Z=82,N=126 closed shells from the study of Sun et al.[***.G:***.,45:075106(2018)],in which theαdecay was calculated by two different microscopic *** find that theαdecay preformation factors are also related to *** with our previous studies[Sun et al.,***.C,94:024338(2016);Deng et al.,ibid.96:024318(2017);Deng et al.,ibid.97:044322(2018)]and that of Seif et al.,[***.C,84:064608(2011)],we suspect that this phenomenon of linear relationship for the nuclei around the above closed shells is *** may be caused by the effect of the valence protons(holes)and valence neutrons(holes)around the shell ***,using the formula obtained by fitting theαdecay preformation factor data calculated by the GLDM,we calculate theαdecay half-lives of these *** calculated results agree with the experimental data well.

关键词： αdecay αdecay preformation factor shell closure generalized liquid drop model

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Evolution of nuclear charge radii in copper and indium isotopes

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Chinese Physics C 2022年第6期46卷 138-146页

作者： Rong An Xiang Jiang Li-Gang Cao Feng-Shou Zhang Key Laboratory of Beam Technology of Ministry of Education Institute of Radiation TechnologyBeijing Academy of Science and TechnologyBeijing 100875China Key Laboratory of Beam Technology of Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Acceleator of LanzhouLanzhou 730000China

Systematic trends in nuclear charge radii are of great interest due to universal shell effects and odd-even staggering(OES).The modified root mean square(rms)charge radius formula,which phenomenologically accounts for the formation of neutron-proton(np)correlations,is here applied for the first time to the study of odd-Z copper and indium *** results obtained by the relativistic mean field(RMF)model with NL3,PK1 and NL3^(*)parameter sets are compared with experimental *** results show that both OES and the abrupt changes across N=50 and 82 shell closures are clearly reproduced in nuclear charge *** inverted parabolic-like behaviors of rms charge radii can also be described remarkably well between two neutron magic numbers,namely N=28 to 50 for copper isotopes and N=50 to 82 for indium *** implies that the np-correlations play an indispensable role in quantitatively determining the fine structures of nuclear charge radii along odd-Z isotopic ***,our conclusions have almost no dependence on the effective forces.

关键词： nuclear charge radii neutron-proton correlations relativistic mean field theory odd-even staggering shell closure

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