Please use this identifier to cite or link to this item:
Main Title: A hydrodynamically optimized nano-electrospray ionization source and vacuum interface
Author(s): Pauly, M.
Sroka, M.
Reiss, J.
Rinke, G.
Albarghash, A.
Vogelgesang, R.
Hahne, H.
Kuster, B.
Sesterhenn, J.
Kern, K.
Rauschenbach, S.
Type: Article
Language Code: en
Abstract: The coupling of atmospheric pressure ionization (API) sources like electrospray ionization (ESI) to vacuum based applications like mass spectrometry (MS) or ion beam deposition (IBD) is done by differential pumping, starting with a capillary or pinhole inlet. Because of its low ion transfer efficiency the inlet represents a major bottleneck for these applications. Here we present a nano-ESI vacuum interface optimized to exploit the hydrodynamic drag of the background gas for collimation and the reduction of space charge repulsion. Up to a space charge limit of 40 nA we observe 100% current transmission through a capillary with an inlet and show by MS and IBD experiments that the transmitted ion beams are well defined and free of additional contamination compared to a conventional interface. Based on computational fluid dynamics modelling and ion transport simulations, we show how the specific shape enhances the collimation of the ion cloud. Mass selected ion currents in the nanoampere range available further downstream in high vacuum open many perspectives for the efficient use of electrospray ion beam deposition (ES-IBD) as a surface coating method.
Issue Date: 2014
Date Available: 28-Jun-2016
DDC Class: 540 Chemie und zugeordnete Wissenschaften
Journal Title: The analyst : the analytical journal of the Royal Society of Chemistry
Publisher: Royal Society of Chemistry
Publisher Place: Cambridge
Volume: 139
Issue: 8
Publisher DOI: 10.1039/c3an01836a
Page Start: 1856
Page End: 1867
EISSN: 1364-5528
ISSN: 0003-2654
Appears in Collections:FG Fluidsystemdynamik - Strömungstechnik in Maschinen und Anlagen » Publications

Files in This Item:
File Description SizeFormat 
c3an01836a.pdf1.74 MBAdobe PDFThumbnail

This item is licensed under a Creative Commons License Creative Commons