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17N破裂反应产物的测量

Measurement of Products in17N Breakup Reaction

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【作者】 王宏伟吴和宇肖志刚靳根明段利敏李祖玉张保国王素芳胡佩钢柳永英詹文龙郭忠言江栋兴华辉李湘庆钱涛

【Author】 WANG Hong Wei\ WU He Yu\ XIAO Zhi Gang\ JIN Gen Ming DUAN Li Min\ LI Zu Yu\ ZHANG Bao Guo\ WANG Su Fang HU Pei Gang\ LIU Yong Ying\ ZHAN Wen Long\ GUO Zhong Yan (Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000,

【机构】 中国科学院近代物理研究所!兰州730000中?

【摘要】 利用RIBLL提供的丰中子放射性束测量了17N在197Au和9Be靶上的破裂反应 .用 1 4单元阵列探测器测量得到了前角带电粒子产额和关联粒子对的破裂截面 ,得到了17N在197Au和9Be靶上的带电粒子破裂截面比为 4— 5倍 ,结果表明对重靶核除了核破裂机制外还要考虑库仑破裂的贡献

【Abstract】 The breakup reaction of neutron rich nucleus 17 N on 197 Au and 9 Be targets has been measured at RIBLL (Radioactive Ion Beam Line at Lanzhou). The product yields and the cross sections of charged particles in pair at forward angles were measured with the 14 unit detector array. The detection efficiency of the detector system was corrected by using Monte Carlo method. The breakup cross sections show that the ratio of the breakup cross section on 197 Au to 9 Be is 4—5. The cross sections of different breakup channels were also obtained. The results indicate that for a heavy target, except the contribution of nuclear dissociation, the Coulomb dissociation contribution has to be taken into account.

【基金】 国家自然科学基金 (1 95 75 0 0 3 ,1 973 5 0 1 0 );中国科学院“九五”基础性研究重大科学基金 (KJ95T -0 3 );国家重点基础研究发展规划 (G2 0 0 0 0 774 0 1 )资助~~
  • 【文献出处】 高能物理与核物理 ,High Energh Physics and Nuclear Physics , 编辑部邮箱 ,2001年09期
  • 【分类号】O571.43
  • 【下载频次】26
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