Patent ID: 7855557

Claim:
A gas nuclear magnetic resonance apparatus comprising: a mass analysis unit including: an ICR cell disposed in a high vacuum space to which a predetermined magnetic field is applied in a predetermined direction, the ICR cell conducting mass screening of introduced gas ions; and a first gas ion controller which introduces the gas ions into the ICR cell, keeps the gas ions in the ICR cell, or discharges the gas ions from the ICR cell; and a nuclear magnetic force amplification unit located within said gas nuclear magnetic resonance apparatus including: a nuclear magnetic force amplification cell disposed in a high vacuum space to which a predetermined gradient magnetic field is applied in the predetermined direction, into which cell gas ions subjected to mass screening in the mass analysis unit are introduced; an amplification unit which amplifies, in the nuclear magnetic force amplification cell, nuclear magnetic forces only of gas ions having a predetermined nuclear magnetic resonance frequency; and a second gas ion controller which introduces the gas ions into the nuclear magnetic force amplification cell, keeps the gas ions in the nuclear magnetic force amplification cell, or discharges the gas ions from the nuclear magnetic force amplification cell, wherein the gas ions having the predetermined nuclear magnetic resonance frequency, which have been amplified in the nuclear magnetic force amplification unit, are reintroduced into the ICR cell.