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@ARTICLE{Suefke:202605,
      author       = {Suefke, Martin and Liebisch, Alexander and Blümich,
                      Bernhard and Appelt, Stephan},
      title        = {{E}xternal high-{Q}uality-factor {R}esonator tunes up
                      nuclear magnetic resonance},
      journal      = {Nature physics},
      volume       = {11},
      issn         = {1745-2481},
      address      = {Basingstoke},
      publisher    = {Nature Publishing Group},
      reportid     = {FZJ-2015-04804},
      pages        = {767-771},
      year         = {2015},
      abstract     = {The development of powerful sensors for the detection of
                      weak electromagnetic fields is crucial for many
                      spectroscopic applications, in particular for nuclear
                      magnetic resonance (NMR). Here, we present a comprehensive
                      theoretical model for boosting the NMR signal-to-noise
                      ratio, validated by liquid-state 1H, 129Xe and 6Li NMR
                      experiments at low frequencies, using an external resonator
                      with a high quality-factor combined with a
                      low-quality-factor input coil. In addition to an enhanced
                      signal-to-noise ratio, this approach exhibits striking
                      features such as a high degree of flexibility with respect
                      to input coil parameters and a square-root dependence on the
                      sample volume, and signifies an important step towards
                      compact NMR spectroscopy at low frequencies with small and
                      large coils.},
      cin          = {IEK-9 / ZEA-2},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IEK-9-20110218 / I:(DE-Juel1)ZEA-2-20090406},
      pnm          = {131 - Electrochemical Storage (POF3-131) / HITEC -
                      Helmholtz Interdisciplinary Doctoral Training in Energy and
                      Climate Research (HITEC) (HITEC-20170406)},
      pid          = {G:(DE-HGF)POF3-131 / G:(DE-Juel1)HITEC-20170406},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000360709200022},
      doi          = {10.1038/nphys3382},
      url          = {https://juser.fz-juelich.de/record/202605},
}