AVS 61st International Symposium & Exhibition
    Vacuum Technology Tuesday Sessions
       Session VT-TuP

Paper VT-TuP4
Improved Threshold Ionisation Mass Spectrometry

Tuesday, November 11, 2014, 6:30 pm, Room Hall D

Session: Vacuum Technology Division Poster Session and Student Poster Contest
Presenter: Alan Rees, Hiden Analytical, UK
Authors: D.L. Seymour, Hiden Analytical, UK
S. Davies, Hiden Analytical, UK
J.A. Rees, Hiden Analytical, UK
P. Hatton, Hiden Analytical, UK
Correspondent: Click to Email
Threshold ionisation mass spectrometry (TIMS) is well established as a technique for improving on standard methods of residual gas analysis, particularly when the dominant peaks in the mass spectrum occur at very nearly the same mass/charge ratio. The mass peaks are then difficult to separate using standard quadrupole mass spectrometric methods. We have described elsewhere several applications in which TIMS has proved to be very effective. More recently, we have examined ways in which the interpretation of TIMS measurements can be improved by fitting to the experimental data trend lines calculated from theoretical expressions.