| 在33.4MeV/u 17N与9Be反应中中子发射的起源 |
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| 引用本文： | 华辉,江栋兴,李湘庆,钱涛,吴和宇,靳根明,詹文龙,段利敏,郭忠言,肖志刚,李祖玉,王素芳,张保国,王宏伟,胡佩钢.在33.4MeV/u 17N与9Be反应中中子发射的起源[J].中国物理 C,2000,24(6):512-517. |
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| 作者姓名： | 华辉 江栋兴 李湘庆 钱涛 吴和宇 靳根明 詹文龙 段利敏 郭忠言 肖志刚 李祖玉 王素芳 张保国 王宏伟 胡佩钢 |
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| 作者单位： | [1]北京大学技术物理系 [2]中国科学院近代物理研究所 |
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| 基金项目： | 中国科学院资助项目，19575003， |
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| 摘 要： | 在不同角度测得的33.4MeV/u 17N+9Be反应中,发射中子的能谱具有复杂的形式,而且随着角度的增大显示出有规律的变化.发射中子至少来源于靶弹核间的核子–核子碰撞、17N的破裂反应以及熔合热核的统计蒸发三种不同起源.分析结果表明:反应体系三种起源的发射中子截面分别为4.49,0.44和5.5b.
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| 关 键 词： | 丰中子核 破裂反应 核子–核子碰撞 发射中子截面 统计蒸发 |
| 收稿时间： | 1999-5-7 |
Origins of the Neutrons Emission in the Reaction of 33.4MeV/u 17N on9Be |
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| HUA Hui,JIANG DongXing,LI XiangQing,QIAN Tao,WU HeYu,JIN GenMing,ZHAN WenLong,DUAN LiMin,GUO ZhongYan,XIAO ZhiGang,LI ZuYu,WANG ShuFang,ZHANG BaoGuo,WANG HongWei,HU PeiGang.Origins of the Neutrons Emission in the Reaction of 33.4MeV/u 17N on9Be[J].High Energy Physics and Nuclear Physics,2000,24(6):512-517. |
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| Authors: | HUA Hui JIANG DongXing LI XiangQing QIAN Tao WU HeYu JIN GenMing ZHAN WenLong DUAN LiMin GUO ZhongYan XIAO ZhiGang LI ZuYu WANG ShuFang ZHANG BaoGuo WANG HongWei HU PeiGang |
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| Abstract: | In the reaction of 33.4MeV/u 17 N on a target 9 Be,the measured neutron spectra at different angles exhibit a complex pattern and vary regularly as a function of the detected angle. The detected neutrons probably come from the three origins:nucleon nucleon collisions between the projectile and target,break up of 17 N and statistical evaporations from the hot nuclei. By analyzing the measured neutron angular distribution and calculating with QMD and GEMINI for the reaction concerned, 4.49,0.44 and 5.5barns were obtained for neutron emission cross sections due to the three origins mentioned above,respectively. |
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| Keywords: | neutron rich nucleus break-up reaction nucleon nucleon collision neutron emission cross section statistical evaporation |
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