Achieving high signal-to-noise performance for a velocity-map imaging experiment

Since the publication of the pioneering paper on velocity-map imaging in 1997, by Eppink and Parker [A.T.J.B. Eppink, D.H. Parker, Rev. Sci. Instrum. 68 (1997) 3477], numerous groups have applied this method in a variety of ways and to various targets. However, despite this interest, little attentio...

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Bibliographic Details
Published in:Journal of electron spectroscopy and related phenomena 2005-06, Vol.144 (Complete), p.251-254
Main Authors: Roberts, E.H., Cavanagh, S.J., Gibson, S.T., Lewis, B.R., Dedman, C.J., Picker, G.J.
Format: Article
Language:English
Subjects:
Anion
Photo-detachment
Signal-to-noise
Velocity-map imaging
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Summary:Since the publication of the pioneering paper on velocity-map imaging in 1997, by Eppink and Parker [A.T.J.B. Eppink, D.H. Parker, Rev. Sci. Instrum. 68 (1997) 3477], numerous groups have applied this method in a variety of ways and to various targets. However, despite this interest, little attention has been given to the inherent difficulties and problems associated with this method. In implementing a velocity-map imaging system for photoelectron spectroscopy for the photo-detachment of anion radicals, we have developed a coaxial velocity-map imaging spectrometer. Examined are the advantages and disadvantages of such a system, in particular the sources of noise and the methods used to reduce it.
ISSN:0368-2048
1873-2526
DOI:10.1016/j.elspec.2005.01.255