Experimental Investigation of High-Frequency Plasma

by | Aug 30, 2022 | Physics, Experiments

Introduction

In this experiment (Experimental Investigation of High-Frequency Plasma), we will be determining whether plasma affects the infrared spectrum by passing the spectrum through the electrically charged gas that will result in a plasma. We will obtain the result by bypassing the infrared spectrum through the plasma.

We hypothesised that the plasma does not affect the infrared spectrum viewing.

Aim

To determine the effect of plasma on infrared spectrum viewing.

Theory

Ionised gasses that can be obtained by the liberation of atoms and electrons under high voltage is termed plasma.

Requirements

1. Pyrex

2. Tungsten electrode

3. 16 gauge steel plate

4. Flat black high heat paint

5. 2 inches germanium window

6. Fish tank heater

7. Spectroradiometer

8. Handwarmer

9. Argon plasma

10. Neon Plasma

11. Helium plasma

12. Clips

13. Notebooks

Procedure

Step 1: Using pyrex, design a 4 X 24 inches plasma chamber.

Step 2: Install a tungsten rod on either side of the plasma chamber that you have constructed.

Step 3: Make 2 inches opening in the centre of each of the plasma chambers.

Step 4: Coat a 16 gauge steel plate with flat black high heat paint.

Step 5: Place this 16 gauge steel plate at one opening of the chamber.

Step 6: Place a 2 inches germanium window on the other opening of the chamber.

Step 7: Heat the steel plate using a hand warmer, which reaches 130 degrees.

Step 8: Attach the hand warmer directly to the outside of the steel plate.

Step 9: Fille a rectangular one-gallon metal can with water and heat the can by using a fish tank heater.

Step 10: Use this rectangular one-gallon metal can as another heat source.

Step 11: Use a spectrometer that operates in between 2.5 and 14.5 micrometres.

Step 12: Use an infrared camera that operates on an 8 to 12-micron infrared camera and has digital memory.

Step 13: Use three plasmas (helium, argon and neon) to perform your testing.

Step 14: Before performing any test, evacuate the chamber for 6 minutes at 0 torrs.

Step 15: Insert each gas inside the chamber at 7 torrs one after another.

Step 16: Supply 5.5 kV power, 2-ampere current, and 20 kHz frequency.

Step 17: Attach clips to the tungsten leads.

Step 18: Turn on the power.

Step 19: Test the plasma in a controlled environment.

Step 20: Take pictures of the chamber before and during the experiment.

Step 21: Record your observations.

Observation

1. We were successful in looking at the one micron at one time using SR5000 testing.

2. We observed that the white bitumen reflected most of the light and the white plastic roofing had the lowest temperature.

Result

1. Our hypothesis was correct in that we assumed that the plasma does not affect the infrared spectrum viewing.

2. The neon, helium, and argon plasma showed no effect on spectrum viewing.

Precaution

1. Designed the chamber with the help of someone.

2. Evacuated the chamber before experimenting.

3. Recorded the observation carefully.

Conclusion

In this experiment, we determined the effect of plasma on infrared viewing and also investigated high voltage, high frequency, and low current plasma observation in infrared spectrum viewing.

Viva Questions with Answers

Q.1 What was the aim of your experiment?

ANS. I aimed to determine the effect of plasma on infrared spectrum viewing.

Q.2 What was the effect of plasma on infrared spectrum viewing?

ANS. Plasma gasses such as neon, helium, and argon affect infrared spectrum viewing.

 

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