Affiliation:
1. Physikalisches Institut der Universität Bonn
Abstract
In order to search for metastable ions with long lifetimes hydrocarbon molecules are ionized by electron impact and the fragment ions preselected by a magnetic spectrometer. Subsequently these selected ions M0
+ pass a drift tube where they may decay into ions M1
+, Μ2
+, .... Behind the drift tube a quadrupole spectrometer is used to analyze the ion current for its mass components M0
+, M1
+
For selected species of fragment ions M0
+ of n-butane, n-pentane, and n-hexane it was found that between 10% and 20% of M0+ decay in the time interval of 10 μs to 150 μs after ionization. Furthermore, 150 μs after ionization (0.040 ± 0.025) % of mass 86+ ions from n-hexane decompose into 56+ fragment ions per 1 μs.
Subject
Physical and Theoretical Chemistry,General Physics and Astronomy,Mathematical Physics
Cited by
17 articles.
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