A remote tuning device for electron paramagnetic resonance probe

Abstract

The invention discloses a remote tuning device for an electron paramagnetic resonance probe. The remote tuning device comprises a tuning rod, a driving unit and a supporting unit, wherein the supporting unit is fixedly connected with the driving unit so as to fix and support the driving unit; one end of the driving unit is connected with a motor and is used for receiving the power of the motor; and the other end of the driving unit is connected with the tuning rod and is used for converting the power from the motor into movement of the tuning rod so as to perform remote tuning on the electron paramagnetic resonance probe. The remote tuning device disclosed by the invention combines a worm and gear structure with a gear and rack structure to realize precise movement of the tuning rod, thereby further realizing precise tuning of a resonant cavity and further ensuring the experimental quality of electron paramagnetic resonance.

Description

technical field [0001] The invention belongs to the technical field of magnetic resonance, in particular to a remote tuning device for an electronic paramagnetic resonance probe. Background technique [0002] Electron spins in an external magnetic field can absorb and emit electromagnetic radiation of corresponding frequency, and a magnetic resonance phenomenon occurs, that is, electron paramagnetic resonance (EPR). Electron spin magnetic resonance can be used to accurately and non-destructively obtain information on the composition and structure of substances, so it has become an important means of spectroscopy in physics, chemistry, biology, geology, archaeology, materials science, and medical science. It has been widely and deeply applied in many important fields such as medicine and industry. [0003] The electronic paramagnetic resonance probe is an important part of the EPR spectrometer. The tuning structure of the existing electronic paramagnetic resonance probe is m...

AI Technical Summary

Problems solved by technology

[0004] 1. The structure of the iris screw is simple, but the tuning accuracy is poor. When the user turns the screw to tune the probe resonant cavity, due to the poor tuning accuracy, it is difficult to achieve a strict coupling effect, resulting in a low signal-to-noise ratio

[0005] 2. Due to the problem of processing accuracy, there is a certain gap between the iris screw and the screw hole. During the experiment, the disturbance of the external environment will easily cause the iris screw to shake, which seriously interferes with the experimental data.

[0006] 3. The screw cannot be self-locked and has conduction reversibility. It is easy to move up and down spontaneously due to the action of gravity, thus affecting the tuning effect

[0007] 4. Although the lever structure can obtain a large transmission ratio, its positioning accuracy is affected by the structure of the lever's slewing fulcrum and force point, and machining accuracy

When the lever fulcrum is fixed, if the tuned part maintains only vertical displacement but no horizontal displacement, a new complex structure is required to limit its freedom of movement

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