Origins of the Neutrons Emission in the Reaction of 33.4MeV/u <SUP>17</SUP>N on <SUP>9</SUP>Be

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

Chinese Physics C> 2000, Vol. 24> Issue(6) : 512-517

Origins of the Neutrons Emission in the Reaction of 33.4MeV/u ¹⁷N on ⁹Be

Departmant of Technical Physics,Peking University,Beijing 100871,China2 Institute of Modern Physics,The Chinese Academy of Sciences,Lanzhou 730000,China

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Abstract：
In the reaction of 33.4MeV/u ¹⁷N on a target ⁹Be,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 ¹⁷N 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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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, Origins of the Neutrons Emission in the Reaction of 33.4MeV/u ¹⁷N on ⁹Be[J]. Chinese Physics C, 2000, 24(6): 512-517.

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Received: 1999-05-07
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

Origins of the Neutrons Emission in the Reaction of 33.4MeV/u ¹⁷N on ⁹Be

Corresponding author: HUA Hui,

Departmant of Technical Physics,Peking University,Beijing 100871,China2 Institute of Modern Physics,The Chinese Academy of Sciences,Lanzhou 730000,China

Received Date: 1999-05-07

Accepted Date: 1900-01-01

Available Online: 2000-06-05

Abstract: In the reaction of 33.4MeV/u ¹⁷N on a target ⁹Be,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 ¹⁷N 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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Origins of the Neutrons Emission in the Reaction of 33.4MeV/u ¹⁷N on ⁹Be

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Origins of the Neutrons Emission in the Reaction of 33.4MeV/u ¹⁷N on ⁹Be

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Origins of the Neutrons Emission in the Reaction of 33.4MeV/u 17N on 9Be

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Origins of the Neutrons Emission in the Reaction of 33.4MeV/u 17N on 9Be

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Origins of the Neutrons Emission in the Reaction of 33.4MeV/u ¹⁷N on ⁹Be

Origins of the Neutrons Emission in the Reaction of 33.4MeV/u ¹⁷N on ⁹Be