Chinese Physics C > 2001, Vol. 25 > Issue(12): 1206-1212

Total Reaction Cross Section of Nucleus-Nucleus Collision and Density Distributions of Halo Nuclei

Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China2 Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China3 Institute of High Energy Physics, The Chinese Academy of Sciences, Beijing 100039, China

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Abstract：
The total reaction cross sections of some halo nucleis on the stable nucleus have been calculated by using improved Glauber theory, which includes quantum correction, Coulomb correction and isospin effects of nucleon-nucleon collision under the assumption of the effective nuclear density distribution. The effects of halo structure on the total reaction cross section of the halo nucleus on the stable nucleus have been investigated. It is found that one can get a satisfactory agreement between the calculation results and the experimental data after considering the halo structure of halo nuclei, such as ¹¹Be, ¹⁴Be and ¹¹Li, which means the different mean fields for the halo nuclei and stable nuclei. Meanwhile it is clear that the medium correction for nucleon-nucleon collision has little effect on the total reaction cross sections induced by halo nuclei due to the very weak binding and quite thin density, which is quite different from the reactions induced by stable nuclei with salient medium corrections.
And then according to experimental total reaction cross section of halo nucleus on stable nucleus we have gotten the density distributions of halo nuclei ¹¹Be, ¹⁴Be and ¹¹Li with a long tail of halo neutron distribution and root mean square (RMS) radii of them. It is obvious that the large RMS radii and extended density distribution in comparison with their neighborhood nuclei demonstrate that ¹¹Be, ¹⁴Be and ¹¹Li are typical halo nuclei.

References

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GUO Wen-Jun, JIANG Huan-Qing and LIU Jian-Ye. Total Reaction Cross Section of Nucleus-Nucleus Collision and Density Distributions of Halo Nuclei[J]. Chinese Physics C, 2001, 25(12): 1206-1212.

GUO Wen-Jun, JIANG Huan-Qing and LIU Jian-Ye. Total Reaction Cross Section of Nucleus-Nucleus Collision and Density Distributions of Halo Nuclei[J]. Chinese Physics C, 2001, 25(12): 1206-1212. shu

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Received: 2000-12-27
Revised: 1900-01-01

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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

Total Reaction Cross Section of Nucleus-Nucleus Collision and Density Distributions of Halo Nuclei

Corresponding author:GUO Wen-Jun,

Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China2 Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China3 Institute of High Energy Physics, The Chinese Academy of Sciences, Beijing 100039, China

Received Date:2000-12-27

Accepted Date:1900-01-01

Available Online:2001-12-05

Abstract:The total reaction cross sections of some halo nucleis on the stable nucleus have been calculated by using improved Glauber theory, which includes quantum correction, Coulomb correction and isospin effects of nucleon-nucleon collision under the assumption of the effective nuclear density distribution. The effects of halo structure on the total reaction cross section of the halo nucleus on the stable nucleus have been investigated. It is found that one can get a satisfactory agreement between the calculation results and the experimental data after considering the halo structure of halo nuclei, such as¹¹Be,¹⁴Be and¹¹Li, which means the different mean fields for the halo nuclei and stable nuclei. Meanwhile it is clear that the medium correction for nucleon-nucleon collision has little effect on the total reaction cross sections induced by halo nuclei due to the very weak binding and quite thin density, which is quite different from the reactions induced by stable nuclei with salient medium corrections.
And then according to experimental total reaction cross section of halo nucleus on stable nucleus we have gotten the density distributions of halo nuclei¹¹Be,¹⁴Be and¹¹Li with a long tail of halo neutron distribution and root mean square (RMS) radii of them. It is obvious that the large RMS radii and extended density distribution in comparison with their neighborhood nuclei demonstrate that¹¹Be,¹⁴Be and¹¹Li are typical halo nuclei.

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Total Reaction Cross Section of Nucleus-Nucleus Collision and Density Distributions of Halo Nuclei

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