A high intensity proton irradiation was performed with the flowing-water isotope harvesting target at the University of Wisconsin-Madison Cyclotron Laboratory to measure the rate of degradation of the target shell during irradiation conditions. The beam reached an intensity of 34 µA by the end of the irradiation and covered an area of 0.7 cm² on the target. Radiolysis products, such as H₂O₂, H₂, and O₂, were measured in the bulk water of the system and found to be present at much lower levels than predicted by literature escape yields. Radionuclides formed in the target shell were measured in the system water as a radiotracer for target degradation. Using a simple, beam intensity dependent model, a corrosion rate of 1.5E-6 μm/(μA*s) was found to match the measured radiotracer activities at various points in the irradiation. This rate was used to extrapolate the lifetime of future isotope harvesting targets at the NSCL and FRIB, using the areal power density of different ion beams to scale the corrosion rate.

在威斯康星大学麦迪逊分校回旋加速器实验室用流动水同位素收集靶进行了高强度质子辐照，以测量辐照条件下靶壳的降解速率。光束在照射结束时达到34 µA的强度，并覆盖了目标物上0.7 cm ²的区域。辐射分解产物，例如H ₂ O ₂，H ₂和O ₂在系统的大量水中进行了测定，发现其含量远低于文献逃逸率所预测的水平。在目标水中形成靶壳的放射性核素作为靶降解的放射性示踪剂进行了测量。使用简单的，依赖于光束强度的模型，发现腐蚀速率为1.5E-6μm/（μA* s），与辐射中各个点测得的放射性示踪剂活性相匹配。使用不同离子束的面功率密度来衡量腐蚀速率，使用该速率来推断NSCL和FRIB未来同位素收集目标的寿命。