CONSTRUCTION OF A PROTOTYPE LABORATORY-BUILT DESKTOP NMR SPECTROMETER
A hardware system for a laboratory-built desktop nuclear magnetic resonance (NMR) spectrometer was constructed with a module design based on single-phase detection architecture. This spectrometer features an operating frequency of DC to 100 MHz, RF pulse power of 0.7244 mW to 1.2589 W, minimum detec...
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| Vydáno v: | Instrumentation science & technology Ročník 39; číslo 1; s. 47 - 62 |
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| Hlavní autoři: | , , , , |
| Médium: | Journal Article |
| Jazyk: | angličtina |
| Vydáno: |
Taylor & Francis Group
31.01.2011
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| Témata: | |
| ISSN: | 1073-9149, 1525-6030 |
| On-line přístup: | Získat plný text |
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| Shrnutí: | A hardware system for a laboratory-built desktop nuclear magnetic resonance (NMR) spectrometer was constructed with a module design based on single-phase detection architecture. This spectrometer features an operating frequency of DC to 100 MHz, RF pulse power of 0.7244 mW to 1.2589 W, minimum detectable signal of 1.5136 × 10
−10
mW, and receiver bandwidth of 20 kHz. Verification of the functional feasibility of NMR detection was implemented using a 30-mL custom probe in a 0.23-T magnetic field. A baseband free induction decay was also acquired through the application of an RF pulse at 1 W for 10 μs. The observed initial amplitude and frequency of the MR signal are 1.47 V and 1.25 kHz, respectively. Meanwhile, the effective transverse relaxation time (
) for this configuration declines to no more than 15 ms because no shimming treatments were taken. The proposed desktop NMR spectrometer is suitable for building a hand-made NMR spectrometer in the laboratory, and enhances opportunities for novel and exciting NMR experiments. |
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| ISSN: | 1073-9149 1525-6030 |
| DOI: | 10.1080/10739149.2010.537717 |