Three-dimensional imaging of carbonyl sulfide and ethyl iodide photodissociation using the pixel imaging mass spectrometry camera

K Amini; S Blake; M Brouard; M B Burt; E Halford; A Lauer; C S Slater; J W L Lee; C Vallance

doi:10.1063/1.4934544

Three-dimensional imaging of carbonyl sulfide and ethyl iodide photodissociation using the pixel imaging mass spectrometry camera

Rev Sci Instrum. 2015 Oct;86(10):103113. doi: 10.1063/1.4934544.

Authors

K Amini¹, S Blake¹, M Brouard¹, M B Burt¹, E Halford¹, A Lauer¹, C S Slater¹, J W L Lee², C Vallance²

Affiliations

¹ The Physical and Theoretical Chemistry Laboratory, The Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom.
² The Chemistry Research Laboratory, The Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom.

PMID: 26520946
DOI: 10.1063/1.4934544

Abstract

The Pixel Imaging Mass Spectrometry (PImMS) camera is used in proof-of-principle three-dimensional imaging experiments on the photodissociation of carbonyl sulfide and ethyl iodide at wavelengths around 230 nm and 245 nm, respectively. Coupling the PImMS camera with DC-sliced velocity-map imaging allows the complete three-dimensional Newton sphere of photofragment ions to be recorded on each laser pump-probe cycle with a timing precision of 12.5 ns, yielding velocity resolutions along the time-of-flight axis of around 6%-9% in the applications presented.