Density effect of the neutron halo nucleus induced reactions in intermediate energy heavy ion collisions

CAO Xi-Guang; CHEN Jin-Gen; MA Yu-Gang; FANG De-Qing; TIAN Wen-Dong; YAN Ting-Zhi; CAI Xiang-Zhou

doi:10.1088/1674-1137/33/S1/016

Chinese Physics C> 2009, Vol. 33> Issue(S1) : 49-51 DOI: 10.1088/1674-1137/33/S1/016

Density effect of the neutron halo nucleus induced reactions in intermediate energy heavy ion collisions

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Using an isospin-dependent quantum molecular dynamics (IQMD) model, we study the ¹⁵C induced reactions from 30—120 MeV/nucleon systematically. Here the valence neutron of ¹⁵C is assigned at both 1d 5/2 and 2s 1/2 states respectively in order to study the density effect of reaction mechanism. It is believed that the existent neutron halo structure at the 2s 1/2 state of ¹⁵C will affect the light particle emission evidently. In our calculation, the different density distributions of ¹⁵C at two states are calculated by relativistic mean field (RMF) model and introduced in the initiation of IQMD model, respectively. It is found that some observables such as emission fragmentation multiplicity, emission neutron/proton ratio and emission neutrons' kinetic energy spectrum are sensitive to the initial density distribution.

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CAO Xi-Guang, CHEN Jin-Gen, MA Yu-Gang, FANG De-Qing, TIAN Wen-Dong, YAN Ting-Zhi and CAI Xiang-Zhou. Density effect of the neutron halo nucleus induced reactions in intermediate energy heavy ion collisions[J]. Chinese Physics C, 2009, 33(S1): 49-51. doi: 10.1088/1674-1137/33/S1/016

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Received: 2008-10-22
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

Density effect of the neutron halo nucleus induced reactions in intermediate energy heavy ion collisions

Corresponding author: CAO Xi-Guang,

Received Date: 2008-10-22

Accepted Date: 1900-01-01

Available Online: 2009-01-10

Abstract: Using an isospin-dependent quantum molecular dynamics (IQMD) model, we study the ¹⁵C induced reactions from 30—120 MeV/nucleon systematically. Here the valence neutron of ¹⁵C is assigned at both 1d 5/2 and 2s 1/2 states respectively in order to study the density effect of reaction mechanism. It is believed that the existent neutron halo structure at the 2s 1/2 state of ¹⁵C will affect the light particle emission evidently. In our calculation, the different density distributions of ¹⁵C at two states are calculated by relativistic mean field (RMF) model and introduced in the initiation of IQMD model, respectively. It is found that some observables such as emission fragmentation multiplicity, emission neutron/proton ratio and emission neutrons' kinetic energy spectrum are sensitive to the initial density distribution.

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Density effect of the neutron halo nucleus induced reactions in intermediate energy heavy ion collisions

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