Low Power Imaging - LPI NMR - Nuclear Magnetic Resonance Method for sensitive and mobile applications
Miniaturised NMR is of growing importance in bio-,
chemical, and material sciences. Only excitation
sequences with ideal power distribution in both the time
domain and the frequency domain qualify for use in
miniaturised NMR. In experiments these sequences show
further superiority because of an increased sensitivity in
terms of low excitation peak power and high response
Portability issues raise the need for minimised power
supplies and amplifiers. Also, when investigating
explosives, power limitations apply. Either the response
peak power is low (noise excitation) or the technology is
outdated (rapid-scan NMR).
The advantage of LPI NMR is that the excitation power
can be decreased by several orders of magnitude with
pulse modulation that achieves the effect of a frequency
sweep. It also fits the need for lower excitation power in
MRI application due to a lower radiation dose.
Further Information: PDF
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