MULTIPLE QUANTUM COHERENCE ESR SPECTROSCOPY: THREE DIPOLAR COUPLED SPIN ONE-HALF

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。 本项目的目的是分析位于三角形顶端的三个偶极耦合自旋S产生的多量子相干脉冲偶极ESR谱。虽然脉冲序列是我们小组以前的工作中已知的，但其思想是找到通过相位循环或时间比例相位增量(TPPI)分离不同阶谱并对其进行分析的方法，特别是绘制多维高阶谱，以使谱分析更加方便和高效。对于所有的计算，我们使用截断的长期哈密顿量，因为我们工作在弱耦合极限。

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. In this project the aim is to analyze the multiple quantum coherence pulsed dipolar ESR spectrum originating from three dipolar coupled spin-¿'s placed at the vertices of a triangle. While the pulse sequence was known from previous work of our group, the idea was to find out ways to separate out the spectra of different orders by using phase cycling or TPPI (time proportional phase incrementation) and to analyze them; especially plotting the higher order spectra in multiple dimensions to make the analysis of the spectrum more convenient and efficient. For all the calculations, we used the truncated secular Hamiltonian as we were working in the weak coupling limit.