True Absorption and Scattering of Pions on Nuclei
True Absorption and Scattering of Pions on Nuclei
复制标题
介子在原子核上的真实吸收和散射
DOI：
10.1103/physrevc.23.2173
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发表时间：
1981
影响因子：
3.1
通讯作者：
F. Schlepuetz
中科院分区：
文献类型：
--
作者：
D. Ashery;I. Navon;G. Azuelos;H. Walter;H. Pfeiffer;F. Schlepuetz
在85，125，165，205，245和315 MeV的正π介子和在125和165 MeV的负π介子的实验中获得了π介子在核中的真实吸收截面。计算结果与理论计算结果进行了比较。测量了π散射的角分布，结果表明准自由散射对后向散射起着重要作用。总的π介子核截面被分解成它的主要渠道：弹性散射，包括非弹性散射，真正的吸收，和单电荷交换，作为π介子能量和电荷的函数。对于轻核，真实吸收截面具有很强的能量依赖性，反映了（3，3）共振的形状。的$A$的真实吸收截面的依赖性是强得多的包容性的非弹性散射。
The cross section for true absorption of pions in nuclei was obtained from experiments at 85, 125, 165, 205, 245, and 315 MeV for positive pions and at 125 and 165 MeV for negative pions. The results are compared with theoretical calculations. The inclusive pion scattering angular distribution was also measured, and the results indicate that quasifree scattering plays an important role for backward scattering. The total pion-nucleus cross section is decomposed into its major channels: elastic scattering, inclusive inelastic scattering, true absorption, and single charge exchange, as a function of pion energy and charge. For light nuclei, the true absorption cross section has a strong energy dependence, reflecting the shape of the (3,3) resonance. The $A$ dependence of the true absorption cross section is much stronger than that of the inclusive inelastic scattering.