Ultrasonic Stimulation of High Order Nuclear Spin Multiple Quantum Coherence

高阶核自旋多量子相干的超声刺激

• 批准号: 0554705
• 负责人: Robert Vold
• 金额: --
• 依托单位: College of William and Mary
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0554705&HistoricalAwards=false
• 关键词: Ultrasonic; Stimulation; Order; Nuclear; Spin

In this Small Grant for Exploratory Research (SGER), funded by the Experimental Physical Chemistry Program of the Chemistry Division, Prof. Robert L. Vold and Professor Gina L. Hoatson of the College of William & Mary and their graduate and undergraduate research students will investigate the possibility of using the combination of radio-frequency and ultrasonic excitation of nuclear spin for achieving high-order multiple quantum coherence. The result of this research will be to enhance the resolution achievable with any given spectrometer system.As nuclear magnetic resonance (NMR) spectrometers use higher and higher magnetic fields, the spectroscopic resolution, and hence the chemical information obtainable, increases. Existing technology puts an upper limit on the magnetic field strengths that are obtainable. With this SGER proposal, Profs. Vold and Hoatson hope to use ultrasonic excitation of their sample to increase the effective resolution of their high-field spectrometer. For a nucleus with a spin of 9/2, their experiment could yield an effective magnetic field of no less that 158 T. This represents a field many times larger than the highest magnetic fields currently achievable for NMR spectroscopy, and would open up new scientific avenues in magnetic resonance research.

在这个由化学系实验物理化学项目资助的探索性研究（SGER）小额资助计划中，Robert L。Vold和Gina L.威廉玛丽学院的Hoatson和他们的研究生和本科生研究生将研究使用射频和超声波激发核自旋的组合来实现高阶多重量子相干的可能性。 这项研究的结果将是提高任何给定的光谱仪系统所能达到的分辨率。随着核磁共振（NMR）光谱仪使用越来越高的磁场，光谱分辨率，从而获得的化学信息，增加。 现有技术对可获得的磁场强度设置了上限。 在这份报告中，教授。Vold和Hoatson希望使用超声波激发他们的样品来增加他们的高场光谱仪的有效分辨率。 对于自旋为9/2的原子核，他们的实验可以产生不低于158 T的有效磁场。 这代表了一个比目前核磁共振光谱学所能达到的最高磁场大很多倍的磁场，并将为磁共振研究开辟新的科学途径。