High performance gridless ion mirrors for multi-reflection time-of-flight and electrostatic trap mass analyzers

Microscope imaging mass spectrometry with a reflectron

“…scitation.org/journal/rsi time-of-flight dependence observed when ions with the same massto-charge ratio (m/z) are created with different kinetic energies. [19][20][21][22][23][24] For example, single-and dual-stage reflectrons provide first-and second-order energy focusing, respectively. Reflectrons also show particular promise for ion imaging.…”

“…25 Yavor and co-workers additionally noted that multi-reflecting time-of-flight instruments can satisfy the stigmatic imaging condition. 24 Collectively, these developments open the possibility of performing microscope imaging at mass resolutions comparable to those achieved by ion traps. This report experimentally establishes a proof of concept for stigmatic imaging with a reflectron by coupling one with a time-of-flight microscope imaging mass spectrometer.…”

The new MRTOF mass spectrograph following the ZeroDegree spectrometer at RIKEN's RIBF facility

“…According to the recent works from other research groups discussing particularly high resolving powers (see e.g. [65,66]), and to the present knowledge of the authors, this is a new record for MRTOF mass spectrometry considering the long measurement time and high number statistics of ions in the spectra. This new achievement will facilitate mass measurements of nuclear isomeric states in future, where R m ≈ 10 6 enables the identification of nuclear isomers (at FWHM level) with excitation energies of, for example, 38 keV for A/q ≈ 40, 93 keV for A/q ≈ 100, and 186 keV for A/q ≈ 200.…”

Novel Hybrid Quadrupole-Multireflecting Time-of-Flight Mass Spectrometry System

“…To define these fields, five separate potentials (V1–V5) are applied to the 10 mirror electrode elements. Altogether, the energy focusing of the ion mirrors is of the fourth order (Figure a) where ions with energy from 6600 to 7040 eV have flight times almost independent of their energy. For a singly charged ion with mass 1000 Da, all flight times fit into a 1.5 ns variance with an average time of 1.28998 ms.…”

“…It should be noted that this is a flight length over an order of magnitude longer than most commercial TOF analyzers implemented in a similar overall instrument footprint. The underlying physics of the mirrors and an explanation of energy focusing in the context of TOF are described elsewhere; , here we primarily describe our implementation and results.…”