Radiofrequency electromagnetic characteristics

According to Equation 1, an ensemble of ions of differing masses will have a spectrum of cyclotron frequencies which is characteristic of that ensemble. For a magnetic field strength of 1 tesla and a mass range of 15 amu to 1500 amu, the cyclotron frequency spectrun (Equation 1) extends from 10 kHz to 1 MHz and thus falls in the radiofrequency region of the electromagnetic spectrum. 

Light is electromagnetic radiation to which the retina of the eye is sensitive, but electromagnetic radiation also includes regions identified as infrared, ultraviolet, x-ray, gamma-ray, and radiofrequency radiation. Atomic spectroscopy utilizes primarily the ultraviolet and visible regions of the electromagnetic spectrum. It is important therefore to understand some of the basic characteristics and properties of such radiation. 

Nuclear magnetic resonance (NMR) spectrometry is based on the net absorption of energy in the radiofrequency region of the electromagnetic spectrum by the nuclei of those elements that have spin angular momentum and a magnetic moment. For the nuclei of a particular element, characteristic absorption, or resonance frequencies, and other spectral features provide useful information on identity and molecular structure. 

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