{"title":"脉冲序列的解析导数优化。定向相中氘解耦的应用","authors":"T.O. Levante, T. Bremi, R.R. Ernst","doi":"10.1006/jmra.1996.0157","DOIUrl":null,"url":null,"abstract":"<div><p>A pulse-sequence optimization procedure that uses a gradient-search method with analytical derivatives is demonstrated. It can be implemented for arbitrarily complex spin-system Hamiltonians and arbitrary pulse sequences. The computational method presented is time-efficient and more accurate than difference methods. It is applied to the optimization of a pulse sequence proposed by K. V. Schenker, D. Suter, and A. Pines [<em>J. Magn. Reson.</em>73, 99 (1987)] for deuterium decoupling in oriented phases. The optimized sequence is tested experimentally on pentadeuterobenzene dissolved in nematic phase.</p></div>","PeriodicalId":16165,"journal":{"name":"Journal of Magnetic Resonance, Series A","volume":"121 2","pages":"Pages 167-177"},"PeriodicalIF":0.0000,"publicationDate":"1996-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1006/jmra.1996.0157","citationCount":"20","resultStr":"{\"title\":\"Pulse-Sequence Optimization with Analytical Derivatives. Application to Deuterium Decoupling in Oriented Phases\",\"authors\":\"T.O. Levante, T. Bremi, R.R. Ernst\",\"doi\":\"10.1006/jmra.1996.0157\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A pulse-sequence optimization procedure that uses a gradient-search method with analytical derivatives is demonstrated. It can be implemented for arbitrarily complex spin-system Hamiltonians and arbitrary pulse sequences. The computational method presented is time-efficient and more accurate than difference methods. It is applied to the optimization of a pulse sequence proposed by K. V. Schenker, D. Suter, and A. Pines [<em>J. Magn. Reson.</em>73, 99 (1987)] for deuterium decoupling in oriented phases. The optimized sequence is tested experimentally on pentadeuterobenzene dissolved in nematic phase.</p></div>\",\"PeriodicalId\":16165,\"journal\":{\"name\":\"Journal of Magnetic Resonance, Series A\",\"volume\":\"121 2\",\"pages\":\"Pages 167-177\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1996-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1006/jmra.1996.0157\",\"citationCount\":\"20\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Magnetic Resonance, Series A\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1064185896901576\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Magnetic Resonance, Series A","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1064185896901576","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 20
摘要
一个脉冲序列优化程序，使用梯度搜索方法与解析导数证明。它可以实现任意复杂的自旋系统哈密顿量和任意脉冲序列。所提出的计算方法比差分法更省时，精度更高。将其应用于K. V. Schenker, D. Suter和a . Pines提出的脉冲序列优化[J]。粉剂。[j] .原子物理学报，1999,19(4):444 - 444。优化后的序列在向列相中溶解的五戊二苯上进行了实验验证。
Pulse-Sequence Optimization with Analytical Derivatives. Application to Deuterium Decoupling in Oriented Phases
A pulse-sequence optimization procedure that uses a gradient-search method with analytical derivatives is demonstrated. It can be implemented for arbitrarily complex spin-system Hamiltonians and arbitrary pulse sequences. The computational method presented is time-efficient and more accurate than difference methods. It is applied to the optimization of a pulse sequence proposed by K. V. Schenker, D. Suter, and A. Pines [J. Magn. Reson.73, 99 (1987)] for deuterium decoupling in oriented phases. The optimized sequence is tested experimentally on pentadeuterobenzene dissolved in nematic phase.
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