4D phase-space acceptance of the quadrupole mass filter. Issue 3 (June 2017)

• Record Type: Journal Article
• Authors: Konenkov, AN; Konenkov, NV; Verenchikov, AN
• Is Part Of: European journal of mass spectrometry. Volume 23:Issue 3(2017)
• Page Start: 116
• Page End: 121
• Publication Date: 2017-06
• Subjects: Quadrupole mass filter -- phase-space dynamics -- acceptance ellipses -- transmission level -- acceptance contour; Mass spectrometry -- Periodicals; Mass Spectrometry; Mass spectrometry; Periodicals; Periodicals; 543.6505
• DOI: 10.1177/1469066717705553
• Languages: English
• ISSNs: 1469-0667

Abstract

Simulations of the four-dimensional (4D) phase-space acceptance volume of a quadrupole mass filter (QMF) are discussed. The 4D acceptance is considered since the ion trajectories in the X and Y phase planes are dependent via the initial RF phase at ion entry into QMF. The QMF parameters are set up for resolution equal to the ion mass number M . For a wide range of ion masses, the acceptance is characterized by relatively large aperture with about 5% transmission, primarily defined by phase dependent ellipses. Contrary to expectations, the small-aperture central spot with 75% transmission accepts a very small portion, namely less than 1% of the passed through particles.