An arrangement for a double-focusing mass spectrograph in which a deflection of radians in a radial electrostatic field is followed by a magnetic deflection of radians.
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 1546 [Terms] [Paper]