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An experimental survey of peak shapes in two‐parameter mass spectra from charge separation of doubly charged ions has been combined with Monte‐Carlo simulations of peak shapes for different mechanisms. As a result, the major mechanisms, deferred charged separation, secondary dissociation and concerted explosion, can now be recognised. Finer details and a number of recurrent peculiar peak shapes remain unexplained.
J. H. D. Eland (Tue,) studied this question.