Recent content by maverik

Ah I see, great thanks. Is this because they lose energy in collisions with the wall? The only thing I really know about the electron and ion frequencies are that they have to be greater than and less than the RF frequency respectively in order for the electrons in the plasma bulk to have...

Hi all, exams in a few weeks and having a bit of trouble understanding the characteristics of plasmas/sheaths. E.g. the following question from a sample paper "Describe the characteristics of the sheath that forms at the boundaries of confined plasma. In your answer state what is meant by the...

I am trying to use the 'Regression Wizard' in SigmaPlot to obtain a best-fit curve to a data set of ~15 data points that map out a spiral. None of the equation categories given in the regression wizard seem to work (i.e. polynomial, exponential, logarithm, hyperbola etc. etc.) and I am unsure...

I'm having some trouble understanding this module. It would be great if anyone could help. In a homogeneous nonconduction region where μr = 1, find εr and ω if E=30(pi)e[i(ωt-4/3y)] in z direction H=0.1e[i(ωt-4/3y)] in x direction I am to understand that for a homognous nonconduction region...

I suppose my main problem is finding the particular magnetic field, B, associated with the electric field given by E.

Ok now I am now getting a fairly long formula for the curl of E. I have tried letting that equal to -dB/dt (Maxwells 3rd eqn) and integrating over time to get an expression for -B. However, when i then get the div of B, nearly everything cancels but not quite everything, so i do not get zero...

ok so for maxwells 1st eqn the div of E is just the phi component and gives 1/(r sin theta)d/d phi(E). Again d/d phi(E) is zero so the whole eqn goes to zero. Is this right? Also I'm not sure how to get maxwells 2nd equation as i have no term for B and when trying to calculate the 3rd eqn i get...

Electrodynamics q! Struggling with this module, if someone could get me started in the right direction that'd be great! An electric field is given by E(r,theta,phi,t)=A(sin theta/r)(cos(kr-wt)-(1/kr)sin(kr-wt)) in phi direction Show that E obeys all 4 of Maxwells equations in vacuum...