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实验利用束流衰减法测量了43.7AMeV丰中子核17B与C靶反应的总截面σR=(1724±93)mb.用零程Glauber计算,假定17B具有核芯15B和两个价中子结构,输入GG和GO密度分布,计算的激发函数曲线与该实验数据很好符合,输入描述稳定核双参数Fermi密度分布,不能得到与实验数据符合的结果,表明17B是核芯15B+2n的假定是合理的.并且中子密度分布表现较大空间扩展-晕结构特征.
Experiments The total cross-section σR for the reaction of 43.7 AMeV abundance neutron nuclei 17B with C was measured by beam-attenuation spectroscopy, σR = (1724 ± 93) mb. Using zero-order Glauber calculations, it is assumed that 17B has a core 15B and two valence neutron structures , Enter the GG and GO density distribution, the calculated excitation function curve is in good agreement with the experimental data, the input describes the stable nuclear two-parameter Fermi density distribution, can not get the results in line with the experimental data, indicating 17B is the assumption of the core 15B +2 n Is reasonable, and the neutron density distribution shows a larger space-halo structure feature.