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ファイル | 記述 | サイズ | フォーマット | |
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j.ssnmr.2012.09.002.pdf | 363.52 kB | Adobe PDF | 見る/開く |
タイトル: | Microcoils and microsamples in solid-state NMR. |
著者: | Takeda, Kazuyuki https://orcid.org/0000-0002-6743-0932 (unconfirmed) |
著者名の別形: | 武田, 和行 |
キーワード: | Microcoil Piggyback microcoil MAS Magic-angle coil spinning (MACS) Disk MAS Strong RF irradiation Active compensation of transients |
発行日: | Oct-2012 |
出版者: | Elsevier Inc. |
誌名: | Solid state nuclear magnetic resonance |
巻: | 47-48 |
開始ページ: | 1 |
終了ページ: | 9 |
抄録: | Recent reports on microcoils are reviewed. The first part of the review includes a discussion of how the geometries of the sample and coil affect the NMR signal intensity. In addition to derivation of the well-known result that the signal intensity increases as the coil size decreases, the prediction that dilution of a small sample with magnetically inert matter leads to better sensitivity if a tiny coil is not available is given. The second part of the review focuses on the issues specific to solid-state NMR. They include realization of magic-angle spinning (MAS) using a microcoil and harnessing of such strong pulses that are feasible only with a microcoil. Two strategies for microcoil MAS, the piggyback method and magic-angle coil spinning (MACS), are reviewed. In addition, MAS of flat, disk-shaped samples is discussed in the context of solid-state NMR of small-volume samples. Strong RF irradiation, which has been exploited in wide-line spectral excitation, multiple-quantum MAS (MQMAS), and dipolar decoupling experiments, has been accompanied by new challenges regarding the Bloch-Siegert effect, the minimum time resolution of the spectrometer, and the time scale of pulse transient effects. For a possible solution to the latter problem, recent reports on active compensation of pulse transients are described. |
著作権等: | © 2012 Elsevier Inc. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/189441 |
DOI(出版社版): | 10.1016/j.ssnmr.2012.09.002 |
PubMed ID: | 23083521 |
出現コレクション: | 学術雑誌掲載論文等 |
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