NMR detection of short-lived β-emitter 12N implanted in water

• Published in: Hyperfine interactions 2017, Vol.238 (1), p.1-5, Article 20
• Main Authors: Sugihara, T., Mihara, M., Shimaya, J., Matsuta, K., Fukuda, M., Ohno, J., Tanaka, M., Yamaoka, S., Watanabe, K., Iwakiri, S., Yanagihara, R., Tanaka, Y., Du, H., Onishi, K., Kambayashi, S., Minamisono, T., Nishimura, D., Izumikawa, T., Ozawa, A., Ishibashi, Y., Kitagawa, A., Sato, S., Torikoshi, M., Momota, S.
• Format: Article
• Language: English
• Subjects: 3-8 July 2016; Atomic; Belgium; Chemical equilibrium; Condensed Matter Physics; Emitters; Hadrons; Heavy Ions; Leuven; Molecular; NMR; Nuclear magnetic resonance; Nuclear Physics; Nuclear spin; Optical and Plasma Physics; Physics; Physics and Astronomy; Proceedings of the International Conference on Hyperfine Interactions and their Applications (HYPERFINE 2016); Surfaces and Interfaces; Thin Films; Water sampling
• ISSN: 0304-3843; 1572-9540
• DOI: 10.1007/s10751-017-1401-2

The beta-detected nuclear magnetic resonance ( β -NMR) in liquid H 2 O has been observed for the first time using a short-lived β -ray emitter 12 N ( I π = 1 + , T 1/2 =11 ms). A nuclear spin polarized 12 N beam with an energy of about 20 MeV/nucleon was implanted into an enclosed water sample. About 50 % of implanted 12 N ions maintained nuclear polarization and exhibited a β -NMR spectrum. The chemical shift of 12 N in H 2 O relative to 12 N in Pt was deduced to be −(3.6±0.5) × 10 2 ppm.