Acoustic magnetic resonance spectroscopy of hydrogen nuclei in fluid

Abstract

We present an analytical study on acoustic magnetic resonance spectroscopy system for hydrogen nuclei in a viscous fluid medium. Magnetic flux density applied to a sample comprising of hydrogen nuclei results in alignment of the magnetic moments along the direction of magnetic field, which precess at Larmor frequency. An acoustic wave applied to the system leads to development of time varying shear forces which can be decomposed into a rotational and a strain component. The rotation of the nuclei around their axes exerts a time varying torque leading to an enhancement of the amplitude of oscillations eventually leading to the generation of radio frequency magnetic fields, which can be used for characterization of a given sample for diagnosis of physiological conditions.