This work is a continuation of a series of publications devoted to the depth-profiling of activity induced by high-energy heavy-ions in selected accelerator-construction materials. An aluminum target in the stacked-foil configuration was irradiated by 300 MeV/u ¹²⁴Xe ions. Depth-profiles of induced activity of selected nuclides were obtained by gamma-spectroscopy of individual target foils. Special attention was paid to heavy projectile-fragments and their ranges. Main profile-shape categories have been defined to illustrate typical shapes of the measured profiles. A new quantity – an activation depth – has been introduced and its dependence on the fragment atomic and mass number has been found. It is shown that this quantity is fragment-specific and can substitute the range, which is very useful in case of the activation experiments using the stacked-foil targets with depth resolution limited by the foil thickness. Apart from gamma-spectroscopic parameters and fundamental nuclear properties of the nuclides, the activation depth can be used as an additional nuclide-attribute supporting identification of the projectile fragments and verification of the range-calculating computer codes. Although the main attention of this paper is paid to presenting the new experimental results, comparison with supporting simulations with the aid of ATIMA and FLUKA2020 is included, too.

这项工作是一系列出版物的延续，这些出版物致力于对选定的加速器构造材料中的高能重离子诱导的活动进行深度分析。堆叠箔配置中的铝靶被 300 MeV/u ¹²⁴辐照氙离子。选定核素的诱导活性的深度分布是通过单个目标箔的伽马光谱获得的。特别注意重型射弹碎片及其射程。已定义主要轮廓形状类别以说明测量轮廓的典型形状。引入了一个新的量——激活深度，并发现了它对碎片原子数和质量数的依赖。结果表明，该数量是特定于片段的并且可以替代范围，这在使用堆叠箔目标的激活实验的情况下非常有用，其深度分辨率受箔厚度限制。除了 γ 光谱参数和核素的基本核特性外，激活深度可用作支持射弹碎片识别和距离计算计算机代码验证的附加核素属性。尽管本文主要关注的是展示新的实验结果，但也包括与借助 ATIMA 和 FLUKA2020 的支持模拟的比较。