Rare isotope tracer injection represents an established way for following particle transport in fusion research, but a tracer experiment is only as good as the tracer can be followed and separated from the common isotope. Physical models for transport analysis such as ERO2.0 require accurate total amounts of deposition with high spatial resolution. This work describes an extended high throughput NRA post analysis approach together with the surface analysis results of 2 technically rough graphite-tiles of 150x150 mm² surface area exposed to D and He plasmas in EAST.

The applied 1.43 MeV deuteron beam NRA offers percent range accuracy for layer thicknesses ranging from few 10 nm to 20 µm. Optimisation of the beam line and beam optics enables operation with ≤20 nA without reaching critical radiation levels, resulting in a measurement time of 5–10 s per spot. This enabled acquiring in total 3070 NRA points on the central 46 × 46 mm² cut-outs of each sample and an adjacent part of equal size within 12 h of analysis time.

The layers contained 50–60% D, ~2% ¹²C, and ~3% O. The central 20 mm radius around the injection hole contains 98% of the total ¹³C deposition. NRA finds up to 5.8 ± 0.9 × 10^{22 13}C/m² close to the hole with an e-folding fall-off length of about 3–10 mm in every radial direction. In the D discharge 24 ± 2% and 16 ± 2% in He of the injected ¹³C are found on the tiles with triangle shaped deposition profiles following ExB. The comparison to colour fringe analysis and SIMS reveals the particular strength of D-NRA regarding roughness, thick layers, and the separation of ¹²C and ¹³C deposits, but in compatible regions all methods agree. Compared to these, the NRA yields additional information indicating depositing species and physical processes.

稀有同位素示踪剂注入是跟踪聚变研究中颗粒传输的既定方法，但示踪剂实验的效果仅与可追踪并与普通同位素分离的示踪剂一样好。用于运输分析的物理模型（例如ERO2.0）需要具有高空间分辨率的准确总量的沉积。这项工作描述了一种扩展的高通量NRA后分析方法，以及2种在EAST中暴露于D和He等离子体的150x150 mm ²表面积的技术粗糙的石墨砖的表面分析结果。

所施加的1.43 MeV氘核NRA可为几层10 nm至20 µm的层厚度提供百分比精度。通过优化光束线和光束光学器件，可以在≤20 nA的条件下工作，而不会达到临界辐射水平，因此每个光点的测量时间为5-10 s。这样就可以在分析时间内12小时内，在每个样本的中央46×46 mm ²切口和等大小的相邻部分上总共获取3070个NRA点。

这些层包含50-60％的D，〜2％的¹² C和〜3％的O。围绕注入孔的中心20 mm半径包含¹³ C沉积总量的98％。NRA在孔附近最多发现5.8±0.9×10 ^{22 13} C / m ²，在每个径向方向上的电子折叠落差长度约为3–10 mm。在D放电中，在ExB之后具有三角形沉积轮廓的瓷砖上发现注入的¹³ C中He的24±2％和He的16±2％。与色带分析和SIMS的比较揭示了D-NRA在粗糙度，厚层以及¹² C和¹³分离方面的特殊强度C矿床，但在兼容地区，所有方法均一致。相比之下，NRA会提供其他信息，指示沉积的物种和物理过程。