Multiexponential decay of negative molecular ions as a result of target molecule distribution over vibrational states

Autor:	Nail L. Asfandiarov, V. G. Lukin, G. S. Lomakin, A. S. Vorob’ev
Rok vydání:	2009
Předmět:	Distribution (mathematics) Physics and Astronomy (miscellaneous) Chemistry Molecule Atomic physics Mass spectrometry Boltzmann distribution Ion
Zdroj:	Technical Physics. 54:1255-1262
ISSN:	1090-6525 1063-7842
DOI:	10.1134/s1063784209090023
Popis:	The lifetimes of long-lived negative molecular ions SF 6 − -, C6H5NO 2 − , and C6F 6 − are measured with a static mass spectrometer. A great spread in published data for the lifetimes of these ions is explained using a concept of multiexponential decay of molecular ions. The influence of the Boltzmann distribution of neutral target molecules over vibrational states on the lifetime of negative molecular ions is studied in terms of the Illenberger-Smirnov-Kompaneits simple statistical model. It is shown that this distribution has a profound effect on the multiexponential decay of molecular anions and, as a consequence, on the lifetime of negative molecular ions measured on different mass spectrometers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b18676f8ddcc57217f28da392c1465b7 https://doi.org/10.1134/s1063784209090023 Zobrazit plný text záznamu Plný text ve formátu PDF