Abstract:
高品質的粉末繞射實驗不僅取決於先進的光束線設備，更仰賴完善的實驗前規劃與樣品準備。TPS-20A 高解析粉末 X 光繞射光束線提供多元的量測模式及非常溫實驗能力，可支援不同材料系統與研究需求。然而，不同實驗目標所需的樣品製備方式、量測環境及實驗參數皆有所差異，若缺乏充分的實驗前討論，容易導致量測效率降低，甚至無法獲得符合研究需求的數據。
本演講將介紹 TPS-20A 的實驗環境與量測能力，包括各項實驗模式、樣品環境設備及其適用範圍，並說明不同實驗類型所對應的樣品製備方式、載具規範、限制條件與注意事項。此外，將分享如何透過實驗前討論（Pre-experimental Discussion）釐清研究目標，確認關鍵科學問題，並據此規劃適當的量測策略、實驗參數及 beamtime 配置，以提升實驗效率與數據品質。
最後，將結合光束線服務經驗，分享用戶在實驗規劃、樣品準備及粉末繞射數據判讀上的常見問題與錯誤觀念，並討論如何建立合理的實驗預期，協助研究團隊有效利用 TPS-20A 的量測資源，提高實驗成功率與研究成果品質。
Successful powder diffraction experiments rely not only on advanced synchrotron instrumentation but also on thorough pre-experimental planning and appropriate sample preparation. The TPS-20A High-Resolution Powder X-ray Diffraction beamline provides versatile measurement capabilities and non-ambient experimental environments to support a broad range of materials research. However, different scientific objectives require distinct sample preparation procedures, experimental configurations, and measurement strategies. Without sufficient pre-experimental discussion, valuable beamtime may be used inefficiently, and the resulting data may not adequately address the intended research questions.
This presentation will introduce the experimental capabilities of TPS-20A, including available measurement modes, sample environment systems, and their applicable research scenarios. Practical considerations for sample preparation, sample holders, experimental limitations, and handling requirements for different experiment types will also be discussed. Furthermore, the presentation will demonstrate how pre-experimental discussions can be used to identify scientific objectives, define key research questions, and optimize experimental parameters and beamtime allocation for improved data quality and experimental efficiency.
Finally, based on beamline user support experience, common mistakes in experiment planning, sample preparation, and diffraction data interpretation will be presented, together with recommendations for establishing realistic experimental expectations. The goal is to help users maximize the scientific outcomes of their beamtime and make effective use of the TPS-20A high-resolution powder diffraction facility.
Keywords – Pre-experimental Planning, Sample Preparation, Experimental Strategy