An analytical expression has been derived for the mass‐analyzed ion kinetic energy spectral profile resulting from a single kinetic energy release in a metastable ion decopmposition. Effects of the Z and Y discriminations and the site of dissociation on the peak‐shape have been accounted for. In addition an analytical peak‐shape function has been derived for a dissociation occurring in and near the collision cell floated at high voltage. Excellent agreement between the present results and the peak shapes obtained by regorous ion‐optical trajectory calculations support the validity of the present method. More importantly, the present method has the advantage of a tremendous reduction in computing time.
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Yeh et al. (1992) studied this question.
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