Registration of spectra in a high-frequency spectrometer of electron paramagnetic resonance using a cylindrical waveguide without a resonator

A. G. Badalyan, R. A. Babunts, A. S. Gurin, M. V. Muzafarova, N. G. Romanov

Ioffe Institute, St. Petersburg

Abstract: The article presents a simple design of a device used in a high-frequency EPR spectrometer operating at 94 and 130 GHz. The device is used to transmit microwave energy over a long distance without noticeable attenuation from a microwave generator to a sample in a helium cryostat. This design allows recording EPR – ODMR spectra in normal and pulsed modes without using a resonator.

Keywords: high-frequency EPR spectrometer, cylindrical waveguide, registration of EPR spectra without a resonator.

Received: 11.08.2025
Revised: 02.09.2025
Accepted: 03.09.2025

DOI: 10.61011/PJTF.2026.01.61923.20468

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