Nmr - spectroscopy of proteins with a selective excitation by means of esr

摘要

PROBLEM TO BE SOLVED: To provide a method for controlling and observing the coupling of a sample substance in an aqueous solution.;SOLUTION: The apparatus comprises a device for applying a strong magnetic field to a sample and an oscillation section for irradiating the sample with an electromagnetic wave in the terahertz region and places a probe and an observation device for generating and detecting nuclear magnetic resonance in the sample. A coupling change produced in the sample is observed by sending an electric signal to the terahertz oscillation section to irradiate the sample with an electromagnetic wave having a resonance frequency of an unpaired electron spin of the sample and detecting the electric properties of the nuclear magnetic resonance.;COPYRIGHT: (C)2005,JPO&NCIPI