CN215868339U - Electron paramagnetic resonance experimental apparatus convenient for replacing sample - Google Patents
Electron paramagnetic resonance experimental apparatus convenient for replacing sample Download PDFInfo
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- CN215868339U CN215868339U CN202122362980.8U CN202122362980U CN215868339U CN 215868339 U CN215868339 U CN 215868339U CN 202122362980 U CN202122362980 U CN 202122362980U CN 215868339 U CN215868339 U CN 215868339U
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Abstract
The utility model discloses an electron paramagnetic resonance experimental device convenient for replacing a sample, which comprises a copper sample box and a limit oscillation box, wherein a sample of a research object is independently arranged in a small glass tube, and the glass tube is very convenient to be inserted into a sample box edge small hole of the limit oscillation box of the electron paramagnetic resonance experimental device; the sample of the research object can be replaced only by replacing the glass tube filled with other different samples, so that the method is quick, convenient and visual. The sample box is a copper circular ring, two sides of the sample box cover a shielding copper plate, a spiral coil is arranged in the sample box, small holes are formed in the edge of the sample box, a glass tube can be inserted into the center of the spiral coil, and the copper shielded sample box prevents interference of an external stray electric field. The sample box is arranged at the center of the two coaxial solenoids to form an alternating and constant magnetic field center. The inner oscillation circuit board of the limit oscillation box is connected with the spiral coil of the sample box, the output frequency and current are adjusted by an adjusting button on the panel, the socket is connected with a frequency meter to test the limit oscillation frequency, and the socket is connected with an oscilloscope to observe the electron paramagnetic resonance waveform.
Description
Technical Field
The utility model belongs to a teaching experiment device, and particularly relates to an electron paramagnetic resonance experiment device convenient for sample replacement.
Background
Electron Spin Resonance (ESR) is a new technology. The object of study is paramagnetic substance with atomic inherent magnetic distance, which is called Electron Paramagnetic Resonance (EPR) paramagnetic substance. Some compounds composed of iron group and rare earth group elements and organic compounds containing spin-unpaired radicals are important targets for studying ESR. The electron spin resonance is a modern physical experiment technology which has wide application in many fields and is important according to the state of non-coupled electrons in atoms and ions and the information of the surrounding environment, thereby obtaining the information about the structure and chemical bond of a substance.
The existing electron paramagnetic resonance teaching experiment device has the problems that a sample of a research object is inconvenient to replace, the sample is sealed in a sample box, the whole limit oscillation box needs to be replaced when the sample needs to be replaced, parameters of different limit oscillation boxes are different, and the like.
Disclosure of Invention
The utility model aims to provide an electron paramagnetic resonance experimental device convenient for replacing a sample aiming at the defects of the prior art. The utility model is suitable for electron paramagnetic resonance teaching experiments in physical experiments of colleges and universities.
The purpose of the utility model is realized by the following technical scheme: an electron paramagnetic resonance experimental device convenient for replacing a sample comprises a sample box, a glass tube, a copper tube and a limit oscillation box; a copper pipe is arranged below the limit oscillation box, and a sample box is arranged at the lower end of the copper pipe; a spiral coil is arranged in the sample box, a small hole is formed in the sample box, and the glass tube is inserted into the spiral coil from the small hole; the spiral coil passes through the copper pipe and is connected with the limit oscillation box.
Further, the limit oscillation box comprises a limit oscillator circuit board; the limit oscillator circuit board is arranged in the limit oscillation box, and the spiral coil penetrates through the copper pipe to be connected to the limit oscillator circuit board.
Furthermore, the limit oscillation box also comprises an oscillation frequency adjusting button, a current adjusting button, a frequency measuring socket, an oscillography socket and a power socket which are all connected on the limit oscillator circuit board.
Furthermore, an oscillation frequency adjusting button, a current adjusting button, a frequency measuring socket, an oscillography socket and a power socket are arranged on the limit oscillation box.
Further, a frequency meter is also included; the frequency measuring socket is connected with a frequency meter.
Further, the device also comprises an oscilloscope; the oscilloscope is connected with the oscillograph socket.
Further, the device also comprises a solenoid, a field-sweeping solenoid, a steady flow source and a field-sweeping driving source; the field-sweeping solenoid is arranged in the solenoid, and the sample box is arranged in the field-sweeping solenoid; the steady current source is connected with two ends of the solenoid, and the field sweeping driving source is connected with two ends of the field sweeping solenoid.
Further, the solenoid and the field sweeping solenoid are coaxial.
Further, the device also comprises an oscilloscope; the oscilloscope is connected with the sweep field driving source.
Furthermore, the sample box consists of a copper ring and circular copper plates on two sides; the small hole of the sample box is arranged on the circular ring.
The utility model has the following beneficial effects:
(1) various samples of the research object are independently arranged in the small glass tube, so that the samples can be clearly observed;
(2) the small glass tube is very convenient to insert and pull out from a sample box of a limit oscillator of the experimental device, and the sample of the research object is replaced;
(3) the device has novel and simple structure and convenient use.
Drawings
FIG. 1 is a schematic view of a boundary oscillation box of the electron paramagnetic resonance experimental apparatus of the present invention;
FIG. 2 is a schematic diagram of the principle of the present invention;
FIG. 3 is a schematic diagram of a margined oscillator of the present invention
In the figure: the device comprises a sample box 1, a spiral coil 2, a small hole 3, a glass tube 4, a sample 5, a circular copper plate 6, a copper tube 7, a limit oscillation box 8, an oscillation frequency adjusting button 9, a frequency measuring socket 11, an oscillography socket 12, a current stabilizing source 13, a solenoid 14, a sweep field driving source 15, a sweep field solenoid 16, a limit oscillator circuit board 17, a current adjusting button 18, a power socket 19, a frequency meter 20 and an oscilloscope 21.
Detailed Description
According to the utility model, a sample is independently arranged in a small glass tube, and the glass tube can be inserted into a small hole at the edge of a sample box of an electron paramagnetic resonance experimental device; the sample can be conveniently replaced only by replacing the glass tube filled with different samples, and the whole limit oscillation box does not need to be replaced.
As shown in FIG. 1, the electron paramagnetic resonance experimental apparatus convenient for sample replacement mainly comprises a sample box 1, a glass tube 4, a copper tube 7 and a limit oscillation box 8. A copper pipe 7 is arranged below the limit oscillation box 8, and a sample box 1 is arranged at the lower end of the copper pipe 7.
The sample box 1 is made of copper and is composed of a copper ring and circular copper plates 6 welded to two sides of the copper ring. A spiral coil 2 is arranged in a sample box 1, a small hole 3 is formed in a circular ring of the sample box 1, and a glass tube 4 containing a sample 5 is inserted into the center of the spiral coil 2 from the small hole 3. The copper shielded sample box 1 can prevent the interference of external stray electric fields.
The limit oscillation box 8 comprises an oscillation frequency adjusting button 9, a current adjusting button 18, a frequency measuring socket 11, an oscillography socket 12, a power socket 19 and a limit oscillator circuit board 17. The limit oscillator circuit board 17 is fixed in the limit oscillation box 8, and all the adjusting buttons and the sockets are arranged on the limit oscillation box 8.
As shown in fig. 3, the spiral coil 2, the oscillation frequency adjusting button 9, the frequency measuring socket 11, the oscillometric socket 12, the current adjusting button 18, and the power socket 19 are all connected to the limit oscillator circuit board 17.
As shown in FIG. 2, the frequency measurement socket 11 is connected to a frequency meter 20 for measuring the oscillation frequency, and the oscillometric socket 12 is connected to an oscilloscope 21 for observing the Electron Paramagnetic Resonance (EPR) waveform.
As shown in fig. 2, the field-sweeping solenoid 16 is arranged in the solenoid 14, the two solenoids are coaxial, the constant magnetic field and the alternating field-sweeping magnetic field are generated after the two coaxial solenoid coils are electrified, and the sample box 1 is arranged at the center of the field-sweeping solenoid 16. Wherein, the steady current of the steady current source 13 is applied to the solenoid 14, and the 5-50 Hz alternating current of the sweep field driving source 15 is applied to the sweep field solenoid 16. The sweep driving source 15 is also connected to an oscilloscope 21, and the output waveform of the sweep driving source 15 is observed.
The magnetic induction B at the center of the two solenoids is:
B＝B0+Bm cosω·t
wherein, B0For constant magnetic induction, BmAnd omega is angular frequency, and t represents time.
It is also noted that the above-mentioned list is only one specific embodiment of the utility model. Obviously, many modifications may be made to the utility model, and all modifications which would be apparent to a person skilled in the art from the disclosure herein are to be considered within the scope of the utility model.
Claims (10)
1. An electron paramagnetic resonance experimental device convenient for sample replacement is characterized by comprising a sample box, a glass tube, a copper tube and a limit oscillation box; a copper pipe is arranged below the limit oscillation box, and a sample box is arranged at the lower end of the copper pipe; a spiral coil is arranged in the sample box, a small hole is formed in the sample box, and the glass tube is inserted into the spiral coil from the small hole; the spiral coil passes through the copper pipe and is connected with the limit oscillation box.
2. The electron paramagnetic resonance experiment apparatus convenient for sample replacement according to claim 1, wherein the limit oscillation box includes a limit oscillator circuit board; the limit oscillator circuit board is arranged in the limit oscillation box, and the spiral coil penetrates through the copper pipe to be connected to the limit oscillator circuit board.
3. The electron paramagnetic resonance experiment device convenient for sample replacement according to claim 2, wherein the limit oscillation box further comprises an oscillation frequency adjusting button, a current adjusting button, a frequency measuring socket, an oscillography socket and a power socket which are all connected to the limit oscillator circuit board.
4. The electron paramagnetic resonance experiment device convenient for sample replacement according to claim 3, wherein the oscillation frequency adjusting button, the current adjusting button, the frequency measuring socket, the oscillograph socket and the power socket are arranged on the limit oscillation box.
5. The electron paramagnetic resonance experiment apparatus for facilitating sample replacement according to claim 3, further comprising a frequency meter; the frequency measuring socket is connected with a frequency meter.
6. The electron paramagnetic resonance experiment apparatus facilitating sample replacement according to claim 3, further comprising an oscilloscope; the oscilloscope is connected with the oscillograph socket.
7. The electron paramagnetic resonance experimental apparatus convenient for sample replacement as claimed in claim 1, further comprising a solenoid, a field sweeping solenoid, a steady current source, a field sweeping driving source; the field-sweeping solenoid is arranged in the solenoid, and the sample box is arranged in the field-sweeping solenoid; the steady current source is connected with two ends of the solenoid, and the field sweeping driving source is connected with two ends of the field sweeping solenoid.
8. The electron paramagnetic resonance experiment apparatus for facilitating sample replacement according to claim 6, wherein the solenoid and the field sweeping solenoid are coaxial.
9. The electron paramagnetic resonance experiment apparatus facilitating sample replacement according to claim 7, further comprising an oscilloscope; the oscilloscope is connected with the sweep field driving source.
10. The electron paramagnetic resonance experiment apparatus for facilitating the replacement of a sample according to claim 1, wherein the sample case is composed of a copper ring and circular copper plates at both sides; the small hole of the sample box is arranged on the circular ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122362980.8U CN215868339U (en) | 2021-09-28 | 2021-09-28 | Electron paramagnetic resonance experimental apparatus convenient for replacing sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122362980.8U CN215868339U (en) | 2021-09-28 | 2021-09-28 | Electron paramagnetic resonance experimental apparatus convenient for replacing sample |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215868339U true CN215868339U (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122362980.8U Active CN215868339U (en) | 2021-09-28 | 2021-09-28 | Electron paramagnetic resonance experimental apparatus convenient for replacing sample |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215868339U (en) |
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2021
- 2021-09-28 CN CN202122362980.8U patent/CN215868339U/en active Active
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