Differential and angle-integrated cross sections for the Ca-40(n, alpha)Ar-37 reaction from 4.0 to 6.5 MeV
Differential and angle-integrated cross sections for the Ca-40(n, alpha)Ar-37 reaction from 4.0 to 6.5 MeV
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Ca-40(n, α)Ar-37 反应从 4.0 到 6.5 MeV 的微分和角积分截面
DOI：
10.1140/epja/i2015-15012-5
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发表时间：
2015
影响因子：
2.7
通讯作者：
Szalanski P. J.
中科院分区：
文献类型：
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作者：
Han Jinhua;Liu Jiaming;Liu Xiang;Fan Xiao;Wang Zhimin;Chen Jinxiang;Zhang Guohui;Gledenov Yu. M.;Sedysheva M. V.;Krupa L.;Khuukhenkhuu G.;Szalanski P. J.
使用双节网格电离室和两个 CaF2 样品在 4.0、4.5、5.0、5.5、6.0 和 6.5MeV 的中子能量下测量 40Ca(n,) 和反应的微分截面。单能中子是通过 2 H(d,n) 3 He 与氘气靶反应产生的。 BF3 中子计数器用于标准化不同测量中的中子通量。使用238U样品校准中子通量的绝对值。 40Ca(n,) 的角积分截面和反应是通过微分数据的积分获得的。使用 TALYS-1.6 代码进行模型计算，并且测量和计算之间取得了总体一致性。然后根据角度积分截面结合代码计算得出总的40Ca(n,)37Ar截面。目前的结果与现有的测量和评估进行了比较。
Differential cross sections for the40Ca(n,) ,andreactions are measured at neutron energies of 4.0, 4.5, 5.0, 5.5, 6.0 and 6.5MeV using a double-section gridded ionization chamber and two CaF2samples. Monoenergetic neutrons were produced through the2H(d,n)3Hereaction with a deuterium gas target. A BF3neutron counter was utilized to normalize the neutron flux among different measurements. The absolute value of neutron flux was calibrated using a238U sample. Angle-integrated cross sections for the40Ca(n,) ,andreactions are obtained from the integration of the differential data. Model calculations are performed using the TALYS-1.6 code and general agreement is achieved between measurements and calculations. Then the total40Ca(n,)37Ar cross sections are derived from the angle-integrated cross sections combined with the code calculations. Present results are compared with existing measurements and evaluations.