The energy loss of heavy ions in thin Mylar and nickel foils was measured accurately using fission fragments from ${}^{239}Pu(n_{th},f)$, mass and energy separated by the Lohengrin separator at ILL. The detection setup, placed at the focal plane of the Lohengrin separator enabled to measure precisely the kinetic energy difference of selected fragments after passing through the sample. From these data, the stopping powers in Mylar and nickel layers were extracted and compared to calculations. Whereas large deviations are observed with SRIM-2013 for Mylar, fairly good agreements are obtained with the semi-empirical approach of Knyazheva et al. (2006) and the calculations contained within the DPASS database. In nickel, SRIM-2013 and Knyazheva model are in agreement with our data within about 10%, while large deviations are observed with DPASS. We used our data to provide updated parameters for the Knyazheva model and rescale DPASS database for nickel and Mylar.

使用来自于 ${}^{239}磷你(n_{吨H},F)$, 质量和能量由 ILL 的 Lohengrin 分离器分离。检测装置放置在 Lohengrin 分离器的焦平面上，能够精确测量所选碎片通过样品后的动能差异。从这些数据中，提取聚酯薄膜和镍层的阻止能力并与计算进行比较。虽然 SRIM-2013 对 Mylar 观察到了很大的偏差，但使用 Knyazheva 等人的半经验方法获得了相当好的一致性。(2006) 和包含在 DPASS 数据库中的计算。在镍中，SRIM-2013 和 Knyazheva 模型与我们的数据一致在 10% 以内，而 DPASS 则观察到较大的偏差。我们使用我们的数据为 Knyazheva 模型提供更新的参数，并重新调整镍和聚酯薄膜的 DPASS 数据库。