400 A MeV^(12)C诱发Pb靶核反应弹核碎裂研究  

Fragmentation of 400 A MeV^(12)C on Pb Target

作　　者：贾利芳 李宜洋 张东海[3] JIA Li-fang;LI Yi-yang;ZHANG Dong-Hai(Wuzhai College,Xinzhou Normal College,Wuzhai 036200,Shanxi,China;School of Chemica Engineering,Beijing University of Chemical Technology,Beijing 102299,China;Institute of Modern Physics,Shanoxi Normal University,Linfen 041000,Shanxi,China)

机构地区：[1]忻州师范学院五寨分院,山西五寨036200 [2]北京化工大学化学工程学院,北京102299 [3]山西师范大学现代物理研究所,山西临汾041000

出　　处：《山西师范大学学报（自然科学版）》2021年第3期54-59,共6页Journal of Shanxi Normal University(Natural Science Edition)

基　　金：国家自然科学基金地区类面上项目(11565001).

摘　　要：论文对最高束流能量为400 A MeV的^(12)C核诱发铅靶核反应弹核碎裂电荷变化反应总截面、弹核碎片产生分截面、弹核散射角及弹核碎片发射角分别进行了研究.实验结果表明弹核碎裂电荷变化总截面及电荷数Z=5的弹核碎片产生分截面在实验误差范围内与弹核能量无关,弹核碎裂反应电荷变化总截面的实验结果与Bradt-Peter半经验公式及PHITS,NUCFRG2理论模型计算结果一致;弹核粒子平均散射角小于电荷数Z=5的弹核碎片的发射角,且在所研究的束流能量范围内在误差范围内保持不变.The total charge-changing reaction cross-sections, the partial cross-sections of projectile fragments production, the scattering angle of beam12 C and the emission angle of projectile fragment with chargeZ =5 for12 C fragmentation on Pb target at the highest energy of 400 A MeV were investigated respectively. It is found that the total charge-changing reaction cross-sections and the partial cross-sections of projectile fragment with chargeZ =5 productions for the12 C fragmentation were independent of the beam energy. The total charge-changing reaction cross sections were the same as the prediction of Bradt-Peters semi-empirical formula, PHITS and NUCFRG2 models. The mean scattering angle of12 C beam particles smaller than the mean emission angle of projectile fragment with chargeZ =5, and it is independent of beam energy in the experimental errors.

关 键 词：核碎裂 电荷变化反应总截面 弹核碎片产生分截面 弹核散射角 弹核碎片发射角 

分 类 号：O571.1[理学—粒子物理与原子核物理]