ion-trap mass spectrometry

Ion-trap mass spectrometry is a technique used in mass spectrometry to identify chemical substances. It works by sorting gaseous ions based on their mass-to-charge ratios using electric and magnetic fields. In ion-trap methods, ions are held in stable orbits for a period, allowing for measurements. This principle is utilized in instruments like the omegatron and Fourier-transform spectrometers, which employ the cyclotron principle. The frequency of ion rotation is inversely proportional to their mass, enabling mass calculation. This technique is valuable for analyzing residual gas in vacuum systems and can achieve high resolution.1