标题： 26Mg 在热核能量下的中子俘获 显示英文标题

标题： Neutron capture of 26Mg at thermonuclear energies

摘要： 测量了26Mg的中子俘获截面，并以核聚变能量下已知的金截面为参考，采用了快速循环活化技术。 实验在卡尔斯鲁厄研究中心的3.75 MV Van-de-Graaff加速器上进行。 实验得到的俘获截面是共振贡献和直接贡献的总和。 对于实验室能量E(n,lab) = 220 keV处的共振，我们的新结果与Weigmann等人的数据存在分歧。 通过考虑s波和p波俘获以及共振贡献，从新的实验数据推导出改进的麦克斯韦平均俘获截面。 详细讨论了影响26Mg的p波中子俘获的所谓势垒共振的性质。 显示英文摘要

摘要： The neutron capture cross section of 26Mg was measured relative to the known gold cross section at thermonuclear energies using the fast cyclic activation technique. The experiment was performed at the 3.75 MV Van-de-Graaff accelerator, Forschungszentrum Karlsruhe. The experimental capture cross section is the sum of resonant and direct contributions. For the resonance at E(n,lab) = 220 keV our new results are in disagreement with the data from Weigmann et al. An improved Maxwellian averaged capture cross section is derived from the new experimental data taking into account s- and p-wave capture and resonant contributions. The properties of so-called potential resonances which influence the p-wave neutron capture of 26}Mg are discussed in detail.