Can a Plasma Source Be Designed to Eliminate UV Radiation?

  • Thread starter Thread starter leilat200
  • Start date Start date
  • Tags Tags
    Plasma Source Uv
Click For Summary

Discussion Overview

The discussion revolves around the feasibility of designing a plasma source that eliminates UV radiation while retaining other species and radiation. It encompasses theoretical considerations and practical implications related to plasma behavior and material properties.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions the possibility of eliminating UV radiation from a plasma source, suggesting that Coulomb collisions inherently produce bremsstrahlung radiation, which includes UV.
  • Another participant proposes using glass to contain the plasma, noting that most glasses block UV radiation, making them suitable for viewports in plasma systems.
  • A subsequent reply emphasizes that while glass can block UV, caution is needed as some materials, like quartz, may not provide the same protection.
  • Participants share links to resources that provide information on the optical properties of materials relevant to UV transmission.

Areas of Agreement / Disagreement

Participants express differing views on the possibility of eliminating UV radiation from plasma, with some asserting it is not feasible due to inherent properties of plasma, while others suggest practical solutions like using specific materials to block UV.

Contextual Notes

There are limitations regarding the assumptions about plasma behavior and the effectiveness of materials in blocking UV radiation, which remain unresolved in the discussion.

Who May Find This Useful

This discussion may be useful for researchers and practitioners in plasma physics, materials science, and optical engineering, particularly those interested in radiation management in plasma applications.

leilat200
Messages
1
Reaction score
0
I want to keep all the species and radiation from plasma but not UV. Is there a way to design plasma source in a way that there will be no UV coming out?
 
Engineering news on Phys.org
I don't see how. Any time you have a plasma you have Coulomb collisions between the electrons and ions. This leads to bremsstrahlung, which contains UV. The cooler and less dense the plasma, the less the radiation, but it is always there.
 
Why don't you keep it behind glass?
 
Dr Lots-o'watts said:
Why don't you keep it behind glass?

To expand on what Doc Watts says, most glasses are only transparent at optical frequencies, and are opaque in the UV (i.e. they block out UV light). Quite handy for view ports on plasma deposition systems (unless they're actually made out of quartz and you're getting yourself a sun tan in the lab).

Melles-Griot has transmission spectra (and other information) for a wide range of materials in the Material Properties Chapter of their excellent Laser Optics primer / text on their website:
http://www.cvimellesgriot.com/Company/CoolTips.aspx

Direct link to the http://www.cvimellesgriot.com/Products/Documents/TechnicalGuide/Material-Properties.pdf"
 
Last edited by a moderator:

Similar threads

Engineering Using UV-C as an alternative for "barbicide" (antibacterial solution)
  • · Replies 1 ·
Replies
1
Views
2K
Getting into Plasma Physics and Fusion
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad Interaction of EM radiation with Glass
  • · Replies 14 ·
Replies
14
Views
2K
How do you fabricate microfluidic chips in your lab?
  • · Replies 2 ·
Replies
2
Views
3K
Osmium Alloys and UV reflection
  • · Replies 2 ·
Replies
2
Views
4K
UV filter for home central heating?
  • · Replies 17 ·
Replies
17
Views
1K
Graduate A couple of long questions on positivity bounds for UV-complete EFTs
  • · Replies 4 ·
Replies
4
Views
2K
PIG (Penning Ionization Gauge) Ion source
  • · Replies 20 ·
Replies
20
Views
3K
Plasma technology for disinfection of sea water
  • · Replies 8 ·
Replies
8
Views
6K
Admissions Plasma Physics PhD from an EE undergrad
  • · Replies 4 ·
Replies
4
Views
3K