Overview of the development of high-resolution 920 MHz NMR in NIMS

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• 作者：Tadashi Shimizu ; Kenjiro Hashi ; Atsushi Goto ; Masataka Tansyo ; Tsukasa Kiyoshi ; Shinji Matsumoto ; Hitoshi Wada ; Teruaki Fujito ; Ken-ichi Hasegawa ; Noriaki Kirihara ; Hiroto Suematsu ; Yoshiki Kida ; Masatoshi Yoshikawa ; Takashi Miki ; Satoshi Ito ; Mamoru Hamada ; Seiji Hayashi
• 关键词：High magnetic field ; Superconducting magnet ; 920 MHz NMR
• 刊名：Physica B
• 出版年：2004
• 出版时间：30 April 2004
• 年：2004
• 卷：346-347
• 期：Complete
• 页码：528-530
• 全文大小：304 K

文摘

We have developed a 920 MHz NMR system and performed the proton NMR measurement of ethylbenzene and water using the superconducting magnet operating at 21.6 T (920 MHz for proton), which is the highest field produced by a superconducting NMR magnet in the persistent mode. From the NMR measurements, it is verified that both homogeneity and stability of the magnet have a specification sufficient for a high-resolution NMR. The sensitivity has been examined by ¹H NMR of 0.1 % ethylbenzene in Wilmad 555 tube and obtained the signal-to-noise ratio as S/N=2981, which is the highest record, to our knowledge, among the room temperature measurements.