期刊
CHEMICAL PHYSICS LETTERS
卷 512, 期 4-6, 页码 151-154出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2011.07.015
关键词
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资金
- Swiss National Science Foundation [200020-124694]
- Ecole Polytechnique Federale de Lausanne (EPFL)
- Swiss Commission for Technology and Innovation (CTI) [9991.1 PFIW-IW]
- French CNRS
This communication describes a three-field experiment where inequivalent scalar coupled spin pairs are hyperpolarized at 3.35 T and 1.2 K by dynamic nuclear polarization (DNP), rapidly transferred to high field (7 T) to prepare a suitable initial condition that is converted adiabatically into a long-lived state (LLS) by shuttling to a 'low' magnetic field (2 mT-7 T). Even without applying any rf irradiation to sustain the LLS, it has a lifetime T-LLS >> T-1 in low fields. Finally, the sample is shuttled back to high field for observation under high-resolution conditions. (C) 2011 Elsevier B. V. All rights reserved.
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