重离子弹性散射中的角分散研究

白真; 王琦; #; 韩建龙; Sergey Yu Kun

doi:10.11804/NuclPhysRev.25.01.001

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重离子弹性散射中的角分散研究

白真, 王琦, #, 韩建龙, Sergey Yu Kun

文章导航 > 原子核物理评论 > 2008 > 25(1): 1-7

白真, 王琦, #, 韩建龙, Sergey Yu Kun. 重离子弹性散射中的角分散研究[J]. 原子核物理评论, 2008, 25(1): 1-7. doi: 10.11804/NuclPhysRev.25.01.001

引用本文:

白真, 王琦, #, 韩建龙, Sergey Yu Kun. 重离子弹性散射中的角分散研究[J]. 原子核物理评论, 2008, 25(1): 1-7. doi: 10.11804/NuclPhysRev.25.01.001

BAI Zhen, WANG Qi, #, HAN Jian-long, Sergey Yu Kun. Angular Dispersion of Elastic Scattering in Heavy Ion Collisions[J]. Nuclear Physics Review, 2008, 25(1): 1-7. doi: 10.11804/NuclPhysRev.25.01.001

Citation:

BAI Zhen, WANG Qi, #, HAN Jian-long, Sergey Yu Kun. Angular Dispersion of Elastic Scattering in Heavy Ion Collisions[J]. Nuclear Physics Review, 2008, 25(1): 1-7. doi: 10.11804/NuclPhysRev.25.01.001

重离子弹性散射中的角分散研究

doi: 10.11804/NuclPhysRev.25.01.001

1 中国科学院近代物理研究所, 甘肃兰州 730000;2 Centro de Ciencias Fisicas, National University of Mexica (UNAM), Cuernavaca, Mexico;3 Center for Nonlinear Physics, RSPhysSE, Australian University, Canberra, ACT 0200, Australia

详细信息

通讯作者: 王琦

Angular Dispersion of Elastic Scattering in Heavy Ion Collisions

1 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; 2 Centro de Ciencias Fisicas, National University of Mexico (UNAM), Cuernavaca, Mexico;3 Center for Nonlinear Physics, RSPhysSE, Australian National University, Canberra, ACT 0200, Australia

摘要: 简要评述了重离子弹性散射角分散研究的内容、方法及物理意义。通过前角区重离子弹性散射产物微分截面的角分布测量，作出角分散图ln(dσ/dθ)\|θ2。分析经典偏转函数，从而在实验上确定了反应系统的核虹角。在低能、重靶的重离子反应系统中，核虹角远小于擦边角。晕核及弱束缚核比稳定核具有更小的核虹角和更大的核相互作用范围。经典偏转函数的计算有助于提供一套光学势参数，以便于拟合弹性散射产物的微分截面。 In terms of the angular dispersion plot of ln(dσ/dθ) versus θ2, which can be obtained from the angular distribution of the elastic scattering differential cross sections in heavy ion collisions, systematic analysis on the angular dispersions is made by using classical deflection function for the available experimental data on the target of 208Pb. Our systematic analyses bring about some important results. Firstly, there is an angular dispersion turning angle at forward angular range beyond the grazing angle. Secondly, the nuclear rainbow angle for such reaction systems can be determined by measuring differential cross sections of elastic scattering at forward angular range and analyzing the angular dispersion. Thirdly, analysis of angular dispersion may provide a way to determine a set of optical potential parameters by means of fitting the experimental data of elastic scattering differential cross sections. Finally, for the halo nuclei as the projectiles, there is an exotic behaviour, i. e., smaller angular dispersion turning angle.
- 重离子弹性散射 /
- 角分散 /
- 经典偏转函数 /
- 核虹角
Abstract: In terms of the angular dispersion plot of ln(dσ/dθ) versus θ2, which can be obtained from the angular distribution of the elastic scattering differential cross sections in heavy ion collisions, systematic analysis on the angular dispersions is made by using classical deflection function for the available experimental data on the target of 208Pb. Our systematic analyses bring about some important results. Firstly, there is an angular dispersion turning angle at forward angular range beyond the grazing angle. Secondly, the nuclear rainbow angle for such reaction systems can be determined by measuring differential cross sections of elastic scattering at forward angular range and analyzing the angular dispersion. Thirdly, analysis of angular dispersion may provide a way to determine a set of optical potential parameters by means of fitting the experimental data of elastic scattering differential cross sections. Finally, for the halo nuclei as the projectiles, there is an exotic behaviour, i. e., smaller angular dispersion turning angle.
- heavy ion elastic scattering /
- angular dispersion /
- classical deflection function /
- nuclear rainbow angle

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重离子弹性散射中的角分散研究

doi: 10.11804/NuclPhysRev.25.01.001

1 中国科学院近代物理研究所, 甘肃兰州 730000;2 Centro de Ciencias Fisicas, National University of Mexica (UNAM), Cuernavaca, Mexico;3 Center for Nonlinear Physics, RSPhysSE, Australian University, Canberra, ACT 0200, Australia

通讯作者: 王琦

收稿日期: 1900-01-01
修回日期: 1900-01-01
刊出日期: 2008-03-20

关键词:

重离子弹性散射 /

角分散 /

经典偏转函数 /

核虹角

摘要: 简要评述了重离子弹性散射角分散研究的内容、方法及物理意义。通过前角区重离子弹性散射产物微分截面的角分布测量，作出角分散图ln(dσ/dθ)\|θ2。分析经典偏转函数，从而在实验上确定了反应系统的核虹角。在低能、重靶的重离子反应系统中，核虹角远小于擦边角。晕核及弱束缚核比稳定核具有更小的核虹角和更大的核相互作用范围。经典偏转函数的计算有助于提供一套光学势参数，以便于拟合弹性散射产物的微分截面。 In terms of the angular dispersion plot of ln(dσ/dθ) versus θ2, which can be obtained from the angular distribution of the elastic scattering differential cross sections in heavy ion collisions, systematic analysis on the angular dispersions is made by using classical deflection function for the available experimental data on the target of 208Pb. Our systematic analyses bring about some important results. Firstly, there is an angular dispersion turning angle at forward angular range beyond the grazing angle. Secondly, the nuclear rainbow angle for such reaction systems can be determined by measuring differential cross sections of elastic scattering at forward angular range and analyzing the angular dispersion. Thirdly, analysis of angular dispersion may provide a way to determine a set of optical potential parameters by means of fitting the experimental data of elastic scattering differential cross sections. Finally, for the halo nuclei as the projectiles, there is an exotic behaviour, i. e., smaller angular dispersion turning angle.

English Abstract

Angular Dispersion of Elastic Scattering in Heavy Ion Collisions

1 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; 2 Centro de Ciencias Fisicas, National University of Mexico (UNAM), Cuernavaca, Mexico;3 Center for Nonlinear Physics, RSPhysSE, Australian National University, Canberra, ACT 0200, Australia

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2008-03-20

Keywords:

Abstract: In terms of the angular dispersion plot of ln(dσ/dθ) versus θ2, which can be obtained from the angular distribution of the elastic scattering differential cross sections in heavy ion collisions, systematic analysis on the angular dispersions is made by using classical deflection function for the available experimental data on the target of 208Pb. Our systematic analyses bring about some important results. Firstly, there is an angular dispersion turning angle at forward angular range beyond the grazing angle. Secondly, the nuclear rainbow angle for such reaction systems can be determined by measuring differential cross sections of elastic scattering at forward angular range and analyzing the angular dispersion. Thirdly, analysis of angular dispersion may provide a way to determine a set of optical potential parameters by means of fitting the experimental data of elastic scattering differential cross sections. Finally, for the halo nuclei as the projectiles, there is an exotic behaviour, i. e., smaller angular dispersion turning angle.

白真, 王琦, #, 韩建龙, Sergey Yu Kun. 重离子弹性散射中的角分散研究[J]. 原子核物理评论, 2008, 25(1): 1-7. doi: 10.11804/NuclPhysRev.25.01.001

引用本文:

白真, 王琦, #, 韩建龙, Sergey Yu Kun. 重离子弹性散射中的角分散研究[J]. 原子核物理评论, 2008, 25(1): 1-7. doi: 10.11804/NuclPhysRev.25.01.001

BAI Zhen, WANG Qi, #, HAN Jian-long, Sergey Yu Kun. Angular Dispersion of Elastic Scattering in Heavy Ion Collisions[J]. Nuclear Physics Review, 2008, 25(1): 1-7. doi: 10.11804/NuclPhysRev.25.01.001

Citation: