Modern physics experiment "Research on Plasma in Gas Discharge" has experimental equipment, and a transition from theory to practice began with SSV-40

Background: The experiment "Research on Plasma in Gas Discharge" is one of the compulsory experiments in modern physics experiments in universities, but no company or individual has produced a complete set of corresponding experimental equipment, so the experiment has been on paper. Today, a team of professors at the Institute of Vacuum and Fluid Engineering of Northeastern University has developed the SSV-40 gas discharge and plasma diagnostic instrument after years of research on this experiment. It is now available to universities in China. "Study of the style" from theory to practice, from books to reality.

product information:
The complete set of equipment includes Langmuir probes, gas discharge tubes, measurement systems, vacuum systems, and air intake systems.

Langmuir probe, working voltage, working pressure, gas flow and other parts can be independently controlled and freely adjusted.

The main experimental content that can be achieved with this device are:

V-I characteristics of discharge tube under gas discharge

2. Glow discharge outline in discharge tube

3. Plasma analysis

    
The knowledge points that students should fully understand through the above experiments include:

Causes and Process of Townsend Discharge

2. Law of Sentence and Fire Voltage

3. V-I characteristics and reasons of discharge tube

4. Appearance and explanation of glow discharge

5. Space charge and plasma

6. Plasma space potential

7. Plasma suspension potential

8. Plasma density (electron density = ion density)

9. Electronic temperature

10. Theory of Plasma Diagnostics with Langmuir Probes

 The main technical parameters:

1. Equipment size: 850 × 500 × 1700 mm, movable;

2. Power characteristics: 220V AC, 50Hz;

3. Total power: 500W;

4. Working pressure range: 20 ~ 80Pa, adjustable;

5. Discharge current range: 0 ~ 5mA;

6. Size of discharge tube: φ35 × 300mm2;

7. Discharge voltage range: 0 ~ 1300V;

8. Electrode: φ30 disc electrode, 304 stainless steel, adjustable pole spacing;

9. Langmuir probe: φ0.2mm, length 10mm, tungsten wire;

10. Probe driving voltage: -100V ~ 100V

11. Probe current: 0 ~ 1000uA

12. Extreme vacuum: <1 Pa, <2 min

13. Environmental requirements: -30 ~ 40 ℃, dry and clean