UTILITY TO DEVELOP SINGLE CRYSTAL W BAND EPR SPECTROMETRY AMETHYST

紫水晶单晶铁离子研究项目， 特别是检测/发现Fe（2+）和Fe（4+）共振。 1)线 为所有的94.1 GHz EPR谱制作了位置角路线图 已知的Fe（3+）中心 - 石英，使用先前测量的9.5 GHz 谱 这些都是作为指导方针必不可少的W波段 工作 2)主要成功的开发工作（月）完成， （学习）生产0.7mm直径的圆柱体， 紫水晶 3)室温下的初步W带光谱 显示存在几个Fe（3+）中心，加上一些尚未 不明中心。 我们寻求获得使用W波段的经验 光谱检测和研究Fe（4+），并将此经验 金属蛋白中Fe（+4）位点的表征。 这是 一个正在进行的项目。

Project to study iron ions in amethyst single crystals, especially to detect/discover Fe(2+) and Fe(4+) resonances. 1) Line position angle roadmaps for 94.1 GHz EPR spectra were produced for all known Fe(3+) centres in -quartz, using 9.5 GHz previously measured spectra. These are serving as guidelines essential for the W-band work. 2) Major successful development work (months) was done to (learn to) produce 0.7mm diameter cylinders of carefully oriented amethyst crystals. 3) Preliminary W-band spectra at room temperature showed presence of several Fe(3+) centres, plus some as-yet unidentified centres. We seek to gain experience on use of W-band spectroscopy to detect and study Fe(4+) and transfer this experience to the characterization of Fe(+4) sites in metalloproteins. This is an ongoing project.