Exploration of Disordered Quadrupolar Molecular Systems

w：\awards\awards96\*.doc 9812657沙利文 这一小笔研究经费加速了佛罗里达的一个实验性核磁共振小组和一位理论家V. B之间的合作。 Kokshenev，在巴西的UFMG。 该研究涉及在分子固体中形成四极和取向玻璃的理论模型。 这种系统的例子 是 邻-仲-氢， 氮气/氩气， 和甲烷/氪固体混合物。 巴西合作者提出的新想法有可能区分四极玻璃冷冻的不同情况。 该方法将在佛罗里达大学使用核磁共振和量热技术进行测试。 该研究计划是跨学科的，涉及一名或多名研究生，他们接受了良好的培训，为工业，政府实验室或学术界的职业生涯做准备。 这一小笔研究经费加速了佛罗里达的一个实验性核磁共振小组和一位理论家V. B之间的合作。 Kokshenev，在巴西的UFMG。 这项研究涉及核磁共振（NMR）的先进实验技术，它允许在固体样品中研究原子的磁矩。实验和理论研究探讨了样品中不同磁矩的相互作用，以及它们可能发生的转变。 集体行为。这项研究涉及在分子固体中形成四极和取向玻璃的理论模型。这种系统的实例是邻位仲氢、氮/氩和甲烷/氪固体混合物。 巴西合作者提出的新想法有可能 能够区分 四极玻璃冷冻的不同场景。该办法 测试 实验上使用核磁共振和 佛罗里达大学的量热技术。该研究计划是跨学科的，涉及一名或多名研究生，他们接受了良好的培训，为工业，政府实验室或学术界的职业生涯做准备。 ***

w:\awards\awards96\*.doc 9812657 Sullivan This small research grant expedites collaboration between an experimental nuclear magnetic resonance group in Florida and a theorist, V. B. Kokshenev, at UFMG in Brazil. The research involves theoretical models for the formation of quadrupolar and orientational glasses in molecular solids. Examples of such systems are ortho-para-hydrogen, nitrogen/argon, and methane/krypton solid mixtures. The new ideas introduced by the Brazilian collaborator have the potential of being able to distinguish between different scenarios for quadrupolar glass freezing. The approach will be tested using combined NMR and calorimetric techniques at the Univ. of Florida. This research program is interdisciplinary in nature and involves one or more graduate students, who receive excellent training in preparation for careers in industry, government laboratories or academia. %%% This small research grant expedites collaboration between an experimental nuclear magnetic resonance group in Florida and a theorist, V. B. Kokshenev, at UFMG in Brazil. The research involves advanced experimental techniques of nuclear magnetic resonance (NMR), which allows the magnetic moment of atoms to be studied within a solid sample. The experimental and theoretical research probes the interaction of different magnetic moments within a sample, and possible transitions which may occur in their collective behavior.The research involves theoretical models for the formation of quadrupolar and orientational glasses in molecular solids. Examples of such systems are ortho-para- hydrogen, nitrogen/argon, and methane/krypton solid mixtures. The new ideas introduced by the Brazilian collaborator have the potential of being able to distinguish between different scenarios for quadrupolar glass freezing. The approach will be tested experimentally using combined NMR and calorimetric techniques at the Univ. of Florida. This research program is interdisciplinary in nature and involves one or more graduate students, who receive excellent training in preparation for careers in industry, government laboratories or academia. ***