For 10 points, name this quantity found on the x-axis of a mass spectrum.
One method of finding this quantity is by applying an RF pulse, then measuring the resulting image current and taking its Fourier transform. An Alexander Makarov designed device produces an FID whose Fourier transform displays the distribution of this quantity. Although not directly measured, the resolution of this quantity is increased when using the reflectron configuration. The thomson is a proposed unit for this quantity in spite of IUPAC's deprecation of it. Magnetic field strength divided by this quantity is equal to the (*) cyclotron frequency, which is the premise of FT-ICR. The Nier-Johnson and Mauttach-Herzog configurations are used in double-focusing sector instruments to sort molecules by this quantity. When accelerating ions to the same kinetic energy, their time-of-flight is proportional to the square root of this quantity. For 10 points, name this quantity found on the x-axis of a mass spectrum.
One method of finding this quantity is by applying an RF pulse, then measuring the resulting image current and taking its Fourier transform.
mass-to-charge ratio [accept m/z ratio; do NOT accept the opposite order; do NOT accept partial answers] 