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. 2023 Jan 5;34(2):264–272. doi: 10.1021/jasms.2c00281

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© 2023 The Authors. Published by American Chemical Society

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Energy focusing in the MRT analyzer. (a) Fourth-order energy focusing on the MRT enables a wide energy acceptance to facilitate high resolution separations. Ions with energies of 6600 to 7040 eV have flight times over a very narrow range of 1.5 ns (blue highlights). (b) Top: The MRT mirror potentials. From the drift potential, ions are accelerated into the mirror by potential V5. Potentials V4–V2 act to reflect the ion packets back through the mirror with V1 acting to better shape the reflecting potentials near the turning point. Bottom: Both mirror potential series can be observed in the context of the entire analyzer with the central periodic lenses visible between them.