Harnessing Plasma with a Laser Pointer and Nitrogen

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Discussion Overview

The discussion revolves around the feasibility of creating plasma using a laser pointer and nitrogen gas. Participants explore various methods for generating plasma, including the use of high voltage and different apparatuses.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant questions the ability to create plasma with a laser pointer, suggesting that the laser intensity may be insufficient.
  • Another participant proposes applying a very high voltage between two plates as a method to generate plasma, specifically mentioning that 20,000 volts per cm could be effective in dry air or nitrogen.
  • This participant also mentions alternative options for generating plasma, such as purchasing a plasma ball or a plasma furnace, and shares an anecdote about a plasma incinerator seen at a science fair.
  • A later reply expresses appreciation for the information shared, indicating engagement with the discussion.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the feasibility of using a laser pointer to create plasma, with differing views on the necessary conditions for plasma generation.

Contextual Notes

The discussion does not clarify the specific requirements for laser intensity or the safety considerations involved in generating plasma, leaving these aspects unresolved.

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I was wondering if I could create plasma inside my own apparatus using a laser pointer and nitrogen..
 
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I doubt it; the laser intensity is not high enough.
 
Well, how can I make plasma
 
Apply a very high voltage between two plates.

If in dry air/nitrogen, 20,000 volts per cm should generate plasma. You can run the voltage up and down to get corona, arcs, or sparks.

Or you can just buy (a) a plasma ball, or (b) a plasma furnace.

Depends on what you are trying to do with the plasma. I once say a plasma incinerator at a high school science fair - the boy made it in the garage; his parents had no idea what he was doing! It was pretty impressive.

Also very dangerous, but he was very careful, and followed good design principles.
 
Thanks for the info. Ultra, I appreciate it
 

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