Back to Search Start Over

Cluster Ion Formation from Alcohol Solutions of CaI<INF>2</INF>

Authors :
Kohno, J.-y.
Mafune, F.
Kondow, T.
Source :
The Journal of Physical Chemistry - Part A; March 18, 1999, Vol. 103 Issue: 11 p1518-1522, 5p
Publication Year :
1999

Abstract

A liquid beam (continuous liquid flow in a vacuum) of a calcium iodide (CaI&lt;INF&gt;2&lt;/INF&gt;) solution in ethanol (EtOH) was irradiated with a 220 nm laser, and ions ejected from the surface following multiphoton ionization were observed by a time-of-flight mass spectrometer. Cluster ions, CaOEt&lt;SUP&gt;+&lt;/SUP&gt;(EtOH)&lt;INF&gt;m&lt;/INF&gt;&lt;INF&gt;&lt;/INF&gt; (m = 2−9), CaI&lt;SUP&gt;+&lt;/SUP&gt;(EtOH)&lt;INF&gt;m&lt;/INF&gt;&lt;INF&gt;&lt;/INF&gt; (m = 1−7), and H&lt;SUP&gt;+&lt;/SUP&gt;(EtOH)&lt;INF&gt;m&lt;/INF&gt;&lt;INF&gt;&lt;/INF&gt; (m = 3−5) were found to be produced. The measurement of the velocities of the product cluster ions indicates that two mechanisms are operative; ions formed on the liquid surface are ejected with accompanying solvent molecules, and ions generated by Coulomb explosion of a divalent cluster ion, Ca&lt;SUP&gt;2+&lt;/SUP&gt;(EtOH)&lt;INF&gt;m&lt;/INF&gt;&lt;INF&gt;&lt;/INF&gt;, are repelled with gaining a sizable translational energy.

Details

Language :
English
ISSN :
10895639 and 15205215
Volume :
103
Issue :
11
Database :
Supplemental Index
Journal :
The Journal of Physical Chemistry - Part A
Publication Type :
Periodical
Accession number :
ejs1124197

Tools

Authors Abstract Subjects Details