Instrument Development For X-ray Magnetic Circular Dichroism

我们建议研制一种X射线磁性圆片仪 生物无机顺磁性样品的二向色性实验 兴趣 它将记录荧光检测的x射线吸收 X射线磁圆二色性（XMCD） 测量. 该设备将针对钒进行优化 通过铜L-边缘（500 - 1000 eV）。 初步实验 在V、Mn、Fe、Cu和Mo顺磁性模型上进行了研究 已知分子结构和磁性的化合物。 晶体学特征的小蛋白质，如天青蛋白 还将检查各种铁氧蛋白。 该项目的X射线源和单色器是 由国家同步辐射实验室（NSLS和 SSRL）。 最终，该仪器将用于高级 光源，一种新的高亮度软X射线环下 伯克利的建筑

We propose to develop an instrument for x-ray magnetic circular dichroism experiments on paramagnetic samples of bioinorganic interest. It will record fluorescence-detected x-ray absorption spectra (XAS) and x-ray magnetic circular dichroism (XMCD) measurements. The device will be optimized for the vanadium through copper L-edges (500-1000 eV). Preliminary experiments will be conducted on paramagentic V, Mn, Fe, Cu and Mo model compounds with known molecular structure and magnetic properties. Crystallographically characterized small proteins such as azurin and various ferrodoxins will also be examined. The x-ray sources and monochromators for this project are provided by national synchrotron radiation laboratories (NSLS and SSRL). Ultimately, the instrument will be used at the Advanced Light Source, a new high brightness soft x-ray ring under construction in Berkeley.