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Rotational Resonance in milli-tesla fields detected by Field Cycling NMR
S Reutter1, A Privalov, G Buntkowsky
1Institut für Festkörperphysik, TU Darmstadt, Hochschulstr 6, 64289 Darmstadt, Germany. stefan.reutter@physik.tu-darmstadt.de
Solid State Nuclear Magnetic Resonance
|January 14, 2012
Summary
Rotational Resonance (R(2)) NMR studies reveal spin-spin distances in adamantane. This technique precisely matches external field frequency to sample rotation frequency for accurate measurements.
Area of Science:
- Solid-state Nuclear Magnetic Resonance (NMR) spectroscopy.
- Condensed matter physics and chemistry.
Background:
- Rotational Resonance (R(2)) is a phenomenon in Nuclear Magnetic Resonance (NMR).
- It occurs between different spin Zeeman levels in molecular samples.
Purpose of the Study:
- To investigate Rotational Resonance (R(2)) in adamantane (C(10)H(16)).
- To study both homonuclear and heteronuclear R(2) in mixtures of C(10)H(16) and C(10)D(16).
- To assess the utility of R(2) for determining spin-spin distances.
Main Methods:
- Utilized a Field Cycling NMR instrument.
- Matched external field frequency (ν(0)) to fixed sample rotation frequencies (ν(r) = 40, 50, or 60 kHz).
- Observed R(2) at specific rational frequency ratios ν(0)/ν(r).
Main Results:
- Successfully observed Rotational Resonance (R(2)) in adamantane samples.
- Identified R(2) at rational frequency ratios, including 1:2, 2:3, 3:2, and 1:1.
- Demonstrated homonuclear and heteronuclear R(2) phenomena.
Conclusions:
- Rotational Resonance (R(2)) is effective for studying spin interactions in adamantane.
- The R(2) method shows promise as a valuable tool.
- This technique can be applied to determine spin-spin distances in condensed matter systems.
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