Continuous wave paramagnetic resonance spectrometer probe with standard sample detection function

Abstract

The invention discloses a continuous wave paramagnetic resonance spectrometer probe with a standard sample detection function. The probe comprises a resonant cavity, a microwave coupling structure and a high-frequency modulation magnetic field coupling structure, wherein the microwave coupling structure and the high-frequency modulation magnetic field coupling structure are arranged on the resonant cavity; the microwave coupling structure is a first small hole formed in the waveguide access side of the rectangular cavity, and an aviation socket used for accessing an external signal source is arranged on the side, opposite to the first small hole, of the rectangular cavity; the high-frequency modulation magnetic field coupling structure comprises a plurality of thin-wall copper pipes which vertically penetrate through the rectangular cavity and are distributed at equal intervals, and Helmholtz coils are wound in the thin-wall copper pipes; a to-be-tested sample tube is vertically arranged in the middle of the rectangular cavity in a penetrating manner, the thin-wall copper tube is symmetrically arranged relative to the to-be-tested sample tube, and a standard sample tube is arranged beside the to-be-tested sample tube.

Description

technical field [0001] The invention relates to the technical field of electron paramagnetic resonance, in particular to a continuous wave paramagnetic resonance spectrometer probe with the function of detecting standard samples. Background technique [0002] Electron paramagnetic resonance (EPR) is a magnetic resonance technique originating from the magnetic moment of unpaired electrons, which can be used to qualitatively and quantitatively detect unpaired electrons contained in material atoms or molecules, and explore their Structural properties of the surrounding environment. Electron paramagnetic resonance spectrometers are mainly divided into two types: pulse type and continuous wave type. The continuous wave paramagnetic resonance spectrometer obtains the continuous wave EPR spectral line by putting the sample to be tested into a constant frequency microwave field and changing the frequency of the external magnetic field. [0003] In electron paramagnetic resonance e...

AI Technical Summary

Problems solved by technology

The existing resonant cavity used in continuous wave paramagnetic resonance spectrometer has the following problems: (1) The continuous wave paramagnetic resonance spectrometer uses high-frequency small-tuning field technology, which needs to couple a certain intensity of the modulated magnetic field into the resonant cavity. The existing coupling The coupling ability of the structure is poor; (2) the sample area is small, it is not convenient to set standard sample tubes and expand functions such as lighting functions

Images