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2
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34447321535
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eff for the nuclei, leading to slightly different frequencies and in total to line broadening.
-
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3
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0034820233
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This is valid except for 129Xe, for which chemical shifts are extremely sensitive to its environment. For resolution of 129Xe chemical shifts at ultralow fields (ULF, see: a) S. Saxena, A. Wong-Foy, A. J. Moule, J. A. Seeley, R. McDermott, J. Clarke, A. Pines, J. Am. Chem. Soc. 2001, 123, 8133-8134;
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34447310792
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34447304835
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In a gradiometer, two measurement devices (magnetometers or pickup loops) are arranged in opposite direction so that they report the difference (the gradient) of the magnetic field
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In a gradiometer, two measurement devices (magnetometers or pickup loops) are arranged in opposite direction so that they report the difference (the "gradient") of the magnetic field.
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21
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34447311330
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c is the critical temperature below which the material becomes superconducting.
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Note that for spin > 1/2, a magnetic field is not necessary to observe the Zeeman effect.
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The difference in resonance frequencies is smaller than the line widths of the signal.
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A spin system is said to be of higher order (strongly coupled) if the splitting that results from coupling is greater than ten times the difference in resonance frequency (chemical shift difference) of the coupling partners. This is observed quite often in homonuclear spin systems of organic compounds e.g. diastereotopic benzylic protons, but is very unusual for heteronuclear spin systems
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A SQUID gradiometer is used here, but this is a general problem of gradiometers and also applies to gradiometers based on atomic magnetometers
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A SQUID gradiometer is used here, but this is a general problem of gradiometers and also applies to gradiometers based on atomic magnetometers.
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