A resistive Q-switch for low-field NMR systems

作者：Zhen, J. Z.; O'Neill, K. T.; Fridjonsson, E. O.; Stanwix, P. L.; Johns, M. L.^*

来源：Journal of Magnetic Resonance, 2018, 287: 33-40.

DOI：10.1016/j.jmr.2017.12.006

• Q-switch
• Ring-down
• Damping
• Low-field NMR
• Earth's field NMR
• Flow meter

An NMR Q-switch was designed and constructed specifically for use with low-field NMR apparatus. This featured a comparatively simple resistive damping design. It served to reduce the r.f. probe ring-down time, and hence reduced the signal acquisition delay from 25 ms to 9 ms, on an Earth's magnetic field NMR system. The advantage of this earlier acquisition was demonstrated for both an aqueous suspension of iron oxide particles and using an NMR flow meter.

• 出版日期2018-2