1. Present Status of 920 MHz High-Resolution NMR Spectrometers.
- Author
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Kiyoshi, Tsukasa, Maeda, Hideaki, Kikuchi, Jun, Ito, Yutaka, Hirota, Hiroshi, Yokoyama, Shigeyuki, Ito, Satoshi, Miki, Takashi, Hamada, Mamoru, Ozaki, Osamu, Hayashi, Seiji, Kurihara, Noriaki, Suematsu, Hiroto, Yoshikawa, Masatoshi, Matsumoto, Shinji, Sato, Akio, and Wada, Hitoshi
- Subjects
SPECTROMETERS ,SPECTRUM analysis instruments ,MAGNETIC resonance ,MAGNETIC fields ,ETHYLBENZENE ,BENZENE - Abstract
The first 920 MHz high-resolution NMR (Nuclear Magnetic Resonance) magnet was successfully installed at the Tsukuba Magnet Laboratory of the National Institute for Materials Science. A persistent operation at 21.6 T has continued since April 2002 without any problems. Excellent field stability of 0.31 Hz/h was observed from December 2002 to January 2003. Since July 2002, the magnet was used as an essential part of the only 920 MHz high-resolution NMR spectrometer in the world. The signal-to-noise ratio of 0.1 % ethylbenzene using a proton-selective probe was as high as 2981. An HCN triple-resonance probe is now attached to the spectrometer to contribute to the National Project on Protein Structural and Functional Analysis in Japan. The completion of the second 920 MHz-class NMR spectrometer is scheduled for spring 2004. [ABSTRACT FROM AUTHOR]
- Published
- 2004
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