Method of relaxation rates measurement in proton-containing materials

Abstract

A method of the relaxation time measurement in a flowing sample, based on the comparison of the amplitudes of nuclear magnetic resonance (NMR) signals observed from the reference and tested flowing samples was represented. The inductive and optical methods of NMR signal detection in the flowing sample were compared. The levels of NMR signal (10,000 ​Hz−1/2) and the Hanle magnetometers signal-to-noise ratio (3500 ​Hz−1/2) were calculated and the possibility of the NMR signal detection with the small-size Hanle magnetometer was demonstrated. Additionally, the absence of a magnet-analyzer and the ability to measure both longitudinal and transverse relaxation time with high accuracy was demonstrated.

Keywords

• Hanle effect
• Magnetic field
• Nuclear magnetic resonance (NMR)
• Quantum magnetometer
• Relaxation time