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Ultraviolet Photodissociation Induced by Light‐Emitting Diodes in a Planar Ion Trap

https://doi.org/10.1002/ange.201605850

Holden, Dustin D. ; Makarov, Alexander ; Schwartz, Jae C. ; Sanders, James D. ; Zhuk, Eugene ; Brodbelt, Jennifer S. ( September 2016 , Angewandte Chemie)

Abstract
The first application of light‐emitting diodes (LEDs) for ultraviolet photodissociation (UVPD) mass spectrometry is reported. LEDs provide a compact, low cost light source and have been incorporated directly into the trapping cell of an Orbitrap mass spectrometer. MS/MS efficiencies of over 50 % were obtained using an extended irradiation period, and UVPD was optimized by modulating the ion trapping parameters to maximize the overlap between the ion cloud and the irradiation volume.

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