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首页> 外文会议>NEA No.3828; Task Force on Shielding Aspects of Accelerators, Targets and Irradiation Facilities; 20020410-12; Menlo Park,CA(US) >INDUCED RADIOACTIVITIES OF SPALLATION PRODUCTS BY VARIOUS PROJECTILE IONS
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INDUCED RADIOACTIVITIES OF SPALLATION PRODUCTS BY VARIOUS PROJECTILE IONS

机译：各种投射离子诱导的分解产物的放射性

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摘要

The radioactivities of spallation products in a Cu target were obtained by bombarding 230 and 100 MeVucleon Ne, C, He, p and 230 MeVucleon Ar ions. Irradiation experiments were performed at the Heavy Ion Medical Accelerator in Chiba (HIMAC) facility, National Institute of Radiological Sciences. The gamma-ray spectra from the irradiated samples inserted into the Cu target were measured with a HPGe detector. From the gamma-ray spectra, we obtained the variation of radioactivities of nuclides produced in the samples with the depth of the Cu target and the mass-yield distribution of nuclides produced in the samples on the surface of the Cu target. The results showed that the dependence of the cross-sections on the projectile mass strongly depends on the mass number difference between Cu and the produced nuclide. We have also applied the semi-empirical formula to the heavy-ion-induced spallation cross-section calculation by using the obtained projectile dependency of mass-yield distribution.
机译：通过轰击230和100 MeV /核子Ne，C，He，p和230 MeV /核子Ar离子获得Cu靶中散裂产物的放射性。放射实验是在国立放射科学研究所千叶县的重离子医学加速器（HIMAC）设施中进行的。用HPGe检测器测量插入Cu目标中的辐照样品的伽马射线光谱。从伽马射线光谱中，我们获得了样品中产生的核素的放射性随铜靶深度的变化以及样品中产生的核素在铜靶表面上的质量-产率分布。结果表明，截面对弹丸质量的依赖性在很大程度上取决于Cu与所产生的核素之间的质量数差。我们还通过使用获得的质量产率分布的射弹依赖性，将半经验公式应用于重离子诱导的散裂截面计算。

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