A novel sector mass spectrograph design for high-order coded aperture Mass Spectrometry with stigmatic aberration correction
| Autor: | Jason J. Amsden, Shane DiDona, Zachary E. Russell, Jeffrey T. Glass, Charles B. Parker, Michael E. Gehm |
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| Rok vydání: | 2020 |
| Předmět: |
Aperture
business.industry Chemistry 010401 analytical chemistry Astrophysics::Instrumentation and Methods for Astrophysics 010402 general chemistry Condensed Matter Physics Mass spectrometry 01 natural sciences 0104 chemical sciences Spatial coding Optics Signal strength Coded aperture Physical and Theoretical Chemistry High order Spectral resolution business Instrumentation Spectrograph Spectroscopy |
| Zdroj: | International Journal of Mass Spectrometry. 455:116374 |
| ISSN: | 1387-3806 |
| Popis: | Previous works experimentally demonstrated that the application of spatially-coded apertures to simple sector mass spectrographs can result in increased signal intensity while maintaining spectral resolution comparable to that of a conventional slit aperture.[Chen, E.X., et al.: J Am Soc Mass Spectr. 26, 1633 (2015)][Russell, Z.E., et al.: J Am Soc Mass Spectr. 26, 248 (2015)] This spatial coding technique was later applied to a double-focusing Mattauch-Herzog mass spectrograph, and shown to be generally compatible with the architecture.[Russell, Z.E., et al.: J Am Soc Mass Spectr. 27, 1 (2016)] However, the achieved signal gain was limited by the spatial size of the electric sector gap. In this work, we introduce a modified version of the Mattauch-Herzog mass spectrograph with a wide-gap electric sector that is enabled by a novel, segmented-electrode approach, and show via simulation that this modified architecture alone (without aperture coding) achieves a 1.8x improvement in mass resolving power compared to a conventional Mattauch-Herzog spectrograph of equivalent size. Further, simulation of an aperture-coded version of the instrument supports a predicted signal strength increase of 50x with minimal loss of aperture clarity on the sensor due to the increased open area of the high-order coded aperture which can be passed. |
| Databáze: | OpenAIRE |
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