TEMPERATURE DEPENDENCE OF RADIATION DAMAGE

这个子项目是许多研究子项目中利用 资源由NIH/NCRR资助的中心拨款提供。子项目和 调查员(PI)可能从NIH的另一个来源获得了主要资金， 并因此可以在其他清晰的条目中表示。列出的机构是 该中心不一定是调查人员的机构。 辐射损伤是第三代同步辐射光源的主要问题。这对单晶衍射实验的数据质量产生了不利影响。尽管辐射损伤的机制已被合理地理解，但如何减轻辐射损伤对数据质量的不利影响尚不清楚。自由基清除剂在许多情况下都被使用，但对于这种方法的有效性没有达成一致意见。虽然众所周知，在液氮温度下，辐射损害明显较小，但还没有确凿的数据表明，在更低的温度下，辐射损害会好到什么程度。我们正在对辐射损伤作为温度的函数进行系统研究。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. Radiation damage is a major problem at third-generation synchrotron light sources. This adversely affects the data quality of single crystal diffraction experiments. Although the mechanism of radiation damage is reasonably well understood, it is not clear how to alleviate the adverse effects of radiation damage on data quality. Free-radical scavengers are used in many cases, but there is no agreement on the usefulness of this method. While it is known that radiation damage is significantly less at LN2 temperature, there is no conclusive data on how much better it would it be at even lower temperatures. We are doing a systematic study of radiation damage as a function of temperature.