Debye length for vacuum

  • Thread starter eftrsd
  • Start date
  • #1
4
0
What is the correct value for the vacuum Debye screening length?
 

Answers and Replies

  • #2
ZapperZ
Staff Emeritus
Science Advisor
Education Advisor
Insights Author
35,847
4,664
What is the correct value for the vacuum Debye screening length?
Can you cite a reference for the existence of "vacuum Debye screening length"?

This term makes no sense, because, by definition, the screening length is caused by the presence of other charges (such as a plasma), meaning it is NOT a vacuum. One may consider the plasma to be in a vacuum background for calculation purposes, but this is far from being a vacuum.

Zz.
 
  • #3
4
0
Thanks Zz for replying. I should have said "air vacuum" which is not the absolute vacuum, of course.
My question is in fact related to a specific problem: The electrostatic potential of a dielectric spherical cavity due to point charge located within it. There are two solutions: one is for Debye length= 0 and one for otherwise. If the cavity is embedded in air\vacuum.. which solution should one consider?
eftrsd.
 

Related Threads on Debye length for vacuum

  • Last Post
Replies
0
Views
1K
  • Last Post
Replies
1
Views
706
Replies
1
Views
510
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
1
Views
4K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
2
Views
5K
Top