The process by which each chemical species present in the ion source at a certain
makes a contribution to the total mass spectrum
which is the same as that which it would give if that chemical species alone were
present in the ion source at a pressure equal to this certain partial pressure
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook