What is meaning of w in plasma permitivity,exactly?

  • Thread starter Thread starter ghasem007
  • Start date Start date
  • Tags Tags
    Plasma
ghasem007
Messages
2
Reaction score
0
Hi.
I have a problem.
as you know,in a plasma medium(such as cylindrical tube),we have:

εr = 1- [ ωp^2 / ω*(ω - jv) ]

that : v = collision frequency
ωp = plasma frequency
but I don't know meaning of " ω " ,exactly.
ω is RF feed frequency of plasma or incident wave frequency to plasma?
I read several book and I know what is plasma,but " ω " parameter confused me...
is there anyone who direct me?
best wishes...
 
Physics news on Phys.org
It is the frequency of the electromagnetic field.
The formula is an expression of the dielectric constant as a function of frequency.
 
yes,I know that this is EM wave frequency.but which EM wave?
it is related to incident wave to plasma,or feeding frequency in surface wave plasma?
 

Thread 'Toponium Discovered'

Toponium is a hadron which is the bound state of a valance top quark and a valance antitop quark. Oversimplified presentations often state that top quarks don't form hadrons, because they decay to bottom quarks extremely rapidly after they are created, leaving no time to form a hadron. And, the vast majority of the time, this is true. But, the lifetime of a top quark is only an average lifetime. Sometimes it decays faster and sometimes it decays slower. In the highly improbable case that...
View full post »

Thread 'Dirac-Delta from Normalization of Continuous Eigenfunctions'

I'm following this paper by Kitaev on SL(2,R) representations and I'm having a problem in the normalization of the continuous eigenfunctions (eqs. (67)-(70)), which satisfy \langle f_s | f_{s'} \rangle = \int_{0}^{1} \frac{2}{(1-u)^2} f_s(u)^* f_{s'}(u) \, du. \tag{67} The singular contribution of the integral arises at the endpoint u=1 of the integral, and in the limit u \to 1, the function f_s(u) takes on the form f_s(u) \approx a_s (1-u)^{1/2 + i s} + a_s^* (1-u)^{1/2 - i s}. \tag{70}...
View full post »

Similar threads

Studying Preparing for Plasma Physics (Jackson)
Replies
4
Views
3K
Distance to pulsar with plasma dispersion relation
Replies
1
Views
2K
Regarding calculation of Plasma frequency and static dielectric constant
Replies
3
Views
6K
Radio-frequency plasma fun: How to characterize a plasma circuit?
Replies
3
Views
6K
Why is my plasma globe causing a geiger counter to go crazy?
Replies
17
Views
6K
I How do the collider experiments measure the mass of the W boson?
Replies
4
Views
4K
What Is the Maximum Length of a Plasma Tube to Excite Only One Frequency?
Replies
1
Views
4K
What happens to the wave impedance of free space at ω=0?
Replies
3
Views
3K
Pendulum & Bullet, Understanding and Applying Angular Momentum
Replies
5
Views
5K
Determining exact solutions to a perturbed simple harmonic oscillator
Replies
3
Views
4K

Hot Threads

Recent Insights

Back
Top