间接测量中重放射性核中子俘获截面——替代比率法

Surrogate Ratio Method to Determine Radioactive Nuclei Neutron Capture Cross Section in sprocess

摘要: s过程中的放射性核素中子俘获截面对天体核合成和核素丰度有重大影响，在直接测量异常困难的情况下，替代比率法是获得放射性核素中子俘获截面数据的一种间接新方法。简单介绍了替代比率法理论，并简要论述了用替代比率法推导中重核区放射性核素中子俘获截面的可行性。 The radioactive nuclei neutron capture cross section is very important to nuclearsynthesis and nuclide abundance in sprocess， but it is difficult to be measured directly because of the target production. A new method， surrogate ratio method which is developed from surrogate method， could be used to determine the cross section of radioactive nuclei neutron capture. In this paper， the surrogate ratio method was introduced and the feasibility was discussed to deduce the desired neutron capture cross sections with surrogate ratio method.

Abstract: The radioactive nuclei neutron capture cross section is very important to nuclearsynthesis and nuclide abundance in sprocess， but it is difficult to be measured directly because of the target production. A new method， surrogate ratio method which is developed from surrogate method， could be used to determine the cross section of radioactive nuclei neutron capture. In this paper， the surrogate ratio method was introduced and the feasibility was discussed to deduce the desired neutron capture cross sections with surrogate ratio method.