Well covered? How many years do I have to read it?? I don’t have that much time left. I see EMP stats and effects start at page 514 and ends at 539.. Simple, right? Can I get it in 25 words or less? It doesn’t even allow for cut and paste. I know. I tried.
As to Forstchen’s book being fiction - so was Atlas Shrugged. How many of us understood what Ayn Rand was telling us in that book? How many of us saw it happening? Wasn’t that fiction?
I have done you google search for you. Here is a version that you can copy from. There is nothing obscure about this whole subject. It is a “classic” field. Complicated, sure. But it’s compination of nuclear physics, plasma physics and electrodynamics.
https://www.osti.gov/servlets/purl/6852629