Theoretical study of the central depression of nuclear charge density distribution by electron scattering

LIU Jian; CHU Yan-Yun; REN Zhong-Zhou; WANG Zai-Jun

doi:10.1088/1674-1137/36/1/008

Chinese Physics C> 2012, Vol. 36> Issue(1) : 48-54 DOI: 10.1088/1674-1137/36/1/008

Theoretical study of the central depression of nuclear charge density distribution by electron scattering

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The charge form factors of elastic electron scattering for isotones with N=20 and N=28 are calculated using the phase-shift analysis method, with corresponding charge density distributions from relativistic mean-field theory. The results show that there are sharp variations at the inner parts of charge distributions with the proton number decreasing. The corresponding charge form factors are divided into two groups because of the unique properties of the s-states wave functions, though the proton numbers change uniformly in two isotonic chains. Meanwhile, the shift regularities of the minima are also discussed, and we give a clear relation between the minima of the charge form factors and the corresponding charge radii. This relation is caused by the diffraction effect of the electron. Under this conclusion, we calculate the charge density distributions and the charge form factors of the A=44 nuclei chain. The results are also useful for studying the central depression in light exotic nuclei.

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LIU Jian, CHU Yan-Yun, REN Zhong-Zhou and WANG Zai-Jun. Theoretical study of the central depression of nuclear charge density distribution by electron scattering[J]. Chinese Physics C, 2012, 36(1): 48-54. doi: 10.1088/1674-1137/36/1/008

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Received: 2011-04-06
Revised: 2011-05-03

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Theoretical study of the central depression of nuclear charge density distribution by electron scattering

Corresponding author: LIU Jian,

Received Date: 2011-04-06

Accepted Date: 2011-05-03

Available Online: 2012-01-05

Abstract: The charge form factors of elastic electron scattering for isotones with N=20 and N=28 are calculated using the phase-shift analysis method, with corresponding charge density distributions from relativistic mean-field theory. The results show that there are sharp variations at the inner parts of charge distributions with the proton number decreasing. The corresponding charge form factors are divided into two groups because of the unique properties of the s-states wave functions, though the proton numbers change uniformly in two isotonic chains. Meanwhile, the shift regularities of the minima are also discussed, and we give a clear relation between the minima of the charge form factors and the corresponding charge radii. This relation is caused by the diffraction effect of the electron. Under this conclusion, we calculate the charge density distributions and the charge form factors of the A=44 nuclei chain. The results are also useful for studying the central depression in light exotic nuclei.

Theoretical study of the central depression of nuclear charge density distribution by electron scattering

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Theoretical study of the central depression of nuclear charge density distribution by electron scattering

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