NMR detection of short-lived β-emitter 12N implanted in water
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- 作者：T. Sugihara ; M. Mihara ; J. Shimaya ; K. Matsuta ; M. Fukuda…
- 关键词：β ; NMR ; Implantation ; Nitrogen ; NMR spectroscopy
- 刊名：Hyperfine Interactions
- 出版年：2017
- 出版时间：November 2017
- 年：2017
- 卷：238
- 期：1
- 全文大小：
- 刊物类别：Physics and Astronomy
- 刊物主题：Nuclear Physics, Heavy Ions, Hadrons; Atomic, Molecular, Optical and Plasma Physics; Condensed Matter Physics; Surfaces and Interfaces, Thin Films;
- 出版者：Springer International Publishing
- ISSN：1572-9540
- 卷排序：238
文摘
The beta-detected nuclear magnetic resonance (β-NMR) in liquid H2O has been observed for the first time using a short-lived β-ray emitter 12N (Iπ = 1+,T1/2=11 ms). A nuclear spin polarized 12N beam with an energy of about 20 MeV/nucleon was implanted into an enclosed water sample. About 50 % of implanted 12N ions maintained nuclear polarization and exhibited a β-NMR spectrum. The chemical shift of 12N in H2O relative to 12N in Pt was deduced to be −(3.6±0.5) × 102 ppm.