Mass Analyzer Using an Alternating Electric Field with a Pause Period: Concept and Simulation.

Area of Science:

• Analytical Chemistry
• Mass Spectrometry
• Physics

Background:

• Traditional mass analyzers face limitations in resolution and scanning speed.
• Developing new methods for efficient ion separation and analysis is crucial.

Purpose of the Study:

• To develop and demonstrate a novel mass analyzer concept utilizing an alternating electric field for ion separation.
• To achieve energy focusing and high mass resolution for pulsed ion beams.

Main Methods:

• Ions are introduced into a separation space during a pause period of an alternating electric field.
• Mass separation is achieved by differences in ion displacement caused by the electric field over one period.
• Numerical calculations were performed to simulate ion behavior and energy focusing.

Main Results:

• Mass separation based on mass-to-charge ratio (m/z) was demonstrated.
• Energy focusing of measured ionic species was achieved.
• A scanning method allowing analysis across the entire m/z range without limits was shown.
• Simultaneous analysis of multiple ionic species and efficient measurement repetition were confirmed.

Conclusions:

• The proposed alternating electric field mass analyzer offers high resolution and broad applicability.
• The method enables efficient, simultaneous analysis of ionic species with potential for high throughput.
• Further examination of direction-focusing performance complements the findings.