A novel programmable pulse generator with nanosecond resolution for pulsed electron paramagnetic resonance...

Area of Science:

• Spectroscopy
• Physical Chemistry
• Instrumentation

Background:

• Time-domain electron paramagnetic resonance (EPR) spectroscopy requires precise timing control for advanced applications.
• Existing pulse programmers may lack the necessary nanosecond resolution or user-friendly interface for complex experiments.

Purpose of the Study:

• To describe a novel pulse programmer with nanosecond time resolution.
• To facilitate time-domain EPR spectroscopic applications, including EPR imaging.

Main Methods:

• Utilized commercially available timing and input-output modules.
• Developed custom control software with a personal computer-based graphical user interface (GUI).
• Implemented automated generation of gate and trigger timings based on user inputs for pulse widths and delays.

Main Results:

• Achieved nanosecond resolution for excitation pulse widths.
• Enabled gate pulse increments in 20 ns steps without performance degradation.
• Demonstrated the capability to generate single or multiple pulse sequences for EPR imaging with minimal GUI interaction.

Conclusions:

• The developed pulse programmer meets the nanosecond time resolution requirements for time-domain EPR.
• The GUI-driven system simplifies the setup and execution of complex EPR experiments, enhancing usability and efficiency.