Simultaneous observation of high order multiple quantum coherences at ultralow magnetic fields
We present a method for the simultaneous observation of heteronuclear multi-quantum coherences (up to the 3rd order), which give an additional degree of freedom for ultralow magnetic field (ULF) MR experiments, where the chemical shift is negligible. The nonequilibrium spin state is generated by Sig...
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| creator | Buckenmaier, K Scheffler, K Plaumann, M Fehling, P Bernarding, J Rudolph, M Back, C Koelle, D Kleiner, R J -B Hövener Pravdivtsev, A N |
| description | We present a method for the simultaneous observation of heteronuclear multi-quantum coherences (up to the 3rd order), which give an additional degree of freedom for ultralow magnetic field (ULF) MR experiments, where the chemical shift is negligible. The nonequilibrium spin state is generated by Signal Amplification By Reversible Exchange (SABRE) and detected at ULF with SQUID-based NMR. We compare the results obtained by the heteronuclei Correlated SpectroscopY (COSY) with a Flip Angle FOurier Series (FAFOS) method. COSY allows a quantitative analysis of homo- and heteronuclei quantum coherences. |
| doi_str_mv | 10.48550/arxiv.1905.02485 |
| format | Article |
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| subjects | Chemical equilibrium Coherence Fourier series Magnetic fields NMR Nuclear magnetic resonance Organic chemistry Physics - Quantum Physics Quantitative analysis Superconducting quantum interference devices |
| title | Simultaneous observation of high order multiple quantum coherences at ultralow magnetic fields |
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