Halo Structure of Nucleus ^23Al |
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作者姓名: | 赵耀林 马中玉 |
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作者单位: | [1]ChinaInstituteofAtomicEnergy,Beijing102413 [2]ChinaInstituteofAtomicEnergy,Beijing102413;CenterofTeoreticalNuclearPhysics,NationalLabortoryofHeavyIonAccelerator,Lanzhou730000;Ins |
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摘 要: | The recently measured reaction cross section of ^23Al is analysed in the Glauber model with an optical limit or few-body approach.It is found that the conventional fixed core-plus-nucleon model for halo nuclei is unable to explain the observed abnormally large reaction cross section of ^23Al by any selection of the halo nucleon configurations.The reaction cross section of ^23Al can be described when the core size is enlarged,although the Coulomb barrier lagely hinders the formation of a halo sturcture for proton-rich nuclei.This is consistent with the case in s-d shell neutron-rich nuclei,where an enlarged core was proposed to explain both the reaction cross section and longitudinal momentum distribution data.
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关 键 词: | ^23Al核 晕结构 反应载面 |
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