magnetic field (backbone), \(B\)

in mass spectrometry
https://doi.org/10.1351/goldbook.M03682
The usual method of producing a @M04007@ (mass) spectrum, by varying the strength of the magnetic field.
Source:
PAC, 1991, 63, 1541. (Recommendations for nomenclature and symbolism for mass spectroscopy (including an appendix of terms used in vacuum technology). (Recommendations 1991)) on page 1550 [Terms] [Paper]