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中高能28Si碎裂截面研究进展
Development of Fragmentation Cross Sections of 28Si at Intermediate and High Energies
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摘要: 介绍了利用CR-39探测器对28Si与不同靶作用的电荷变化总截面和分截面的研究进展,给出723AMeV 28 Si与碳靶作用电荷变化总截面和分截面的最新实验结果.对28Si与靶核反应电荷变化总截面和分截面与束流能量和靶核质量的关系进行了讨论,发现束流能量大于200 AMeV时,中高能28Si与不同靶核反应电荷变化总截面与束流能量无关,分截面表现出明显的奇偶效应,且随靶核质量数的增加而增加.Abstract: In this paper,the development of the total and partial charge changing cross sections of 28Si ions beam in different targets using the CR-39 detectors are reviewed.The newest experimental results of the total and partial charge changing cross sections of 28Si in carbon target at 723 AMeV are presented.The dependence of the target mass and the cross sections of 28Si including the total and the partial charge changing cross sections are discussed.It is found that the total charge changing cross sections of 28Si are independent of the energy when the energy of the ions beam is greater than 200 AMeV.The partial charge changing cross sections show an obviously odd-even effect,and increase with the increasing of the mass number of the target.
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