Issue 3, 2011
From the journal:

Journal of Analytical Atomic Spectrometry

Numerical simulations of gas flows through an open, non-contact cell for LA-ICP-MS

Dhinesh Asogan,ab   Barry L. Sharp,*a   Ciaran J. P. O'Connor,c   Damon A. Greenc  and  Jay Wilkinsd  

* Corresponding authors

a Centre for Analytical Science, Department of Chemistry, Loughborough University, Loughborough, Leicestershire, UK
E-mail: B.L.Sharp@lboro.ac.uk

b Centre for Innovative and Collaborative Engineering, Department of Civil and Building Engineering, Loughborough University, Loughborough, Leicestershire, UK

c Electro Scientific Industries Europe Ltd., New Wave Research Division, 8 Avro Court, Ermine Business Park, Huntingdon, Cambs, UK

d Electro Scientific Industries Inc., New Wave Research Division, 685 Old Buffalo Trail, Bozeman, MT, USA

Abstract

Numerical simulations of gas flows through an open, non-contact cell for laser ablation are presented. The cell consists of dual, annular, concentric micro-jet gas arrays to entrain ablated material (the carrier flow) and exclude atmosphere (the curtain flow). This study shows that the design of the cell affords a very high degree of exclusion of atmospheric gases, using a relatively low curtain flow of 2.5 l min−1 (with a carrier flow of 1.2 l min−1He), and demonstrates the efficacy of the micro-jet arrays in providing an axially symmetric exclusion zone. Minimum particle transit times through the cell were calculated to be of the order of 50–100 ms.

Graphical abstract: Numerical simulations of gas flows through an open, non-contact cell for LA-ICP-MS

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Article information

DOI
https://doi.org/10.1039/C0JA00166J
Article type
Technical Note
Submitted
21 Sep 2010
Accepted
10 Nov 2010
First published
01 Dec 2010

J. Anal. At. Spectrom., 2011,26, 631-634

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Numerical simulations of gas flows through an open, non-contact cell for LA-ICP-MS

D. Asogan, B. L. Sharp, C. J. P. O'Connor, D. A. Green and J. Wilkins, J. Anal. At. Spectrom., 2011, 26, 631 DOI: 10.1039/C0JA00166J

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