A novel sector mass spectrograph design for high-order coded aperture Mass Spectrometry with stigmatic aberration correction

Journal Article (Journal Article)

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.

Full Text

Duke Authors

Cited Authors

  • DiDona, S; Russell, Z; Amsden, J; Parker, C; Glass, J; Gehm, M

Published Date

  • September 1, 2020

Published In

Volume / Issue

  • 455 /

International Standard Serial Number (ISSN)

  • 1387-3806

Digital Object Identifier (DOI)

  • 10.1016/j.ijms.2020.116374

Citation Source

  • Scopus