Yes. one billion pulses per second.
I don't smoke anything.
I am talking about a picosecond pulse modulated signal.
The frequency is still 50-60Hz but is pulsed at 1 billion pulses per second.
What will the core act like?
I am trying to send a modulated signal over a powerline wire without destroying anything in the process. That's all.
You're confusing 'pulses' & Hertz. Hertz is a pulse, or cycle (whatever you want to call it, periodicity, repetition, etc.). If you pulse at 1*10^9 times a second, your hertz, or cycle/periods/pulses would be one billion hertz. Pulses, as in a square, triangle or sawtooth for DC, is an easy illustration of this. AC itself does not pulse. It is just Alternating Current. Going between a positive & negative in a cycle/period. DC can be chopped to switch between high/low, an example is computing, where a pulse signals a gate or transistor/network to toggle on or off. Pulsed AC is the incorrect term here.
So to have one billion pulses @ 60Hz makes literally, no sense. It's like saying 1 divided by Hill. wtf does that mean?
What might help you is looking into sweeping signals, which can increase or decrease in amplitude or in frequency. Think of how sirens work, a small sound at first, followed by increasing noise/volume until it hits the peak and then decreases, causing the wailing sound you would hear.
DC itself is not AC, it is chopped up and has a very linear progression or recession in the cycle. Think of a triangle wave, it slowly, or quickly, goes up to a value, then immediately drops to another value.
DC also, generally speaking, does not alternate between positive & negative voltages, it is either on or off or somewhere inbetween. It does not have a nice parabolic shape to it. Now, you can make pulsed DC into a sinusoidal waveform, at which point, if I'm not mistaken, it stops being DC. An example of this would be an inverter which inverts the DC into AC. At which point the output is no longer called DC, or pulsed DC, it is now an alternating current between some positive & negative voltage/s.
I hope this adds some clarity. Check the examples I listed, I think it will give you a nice visual reference for the things you're trying to do.
Also, if you wanted a 1 billion Hertz signal, I do not think that it would harm the cable. I have heard of high current or high voltage wires used for certain applications. However I've never heard of a high frequency cable (although I'm sure it exist) so my hunch is that you won't do any harm. However, take it for face value and do a little digging into the subject. My recommendation would be to call a local engineering office and see what they say. Not only is talking to someone face to face better, because you get immediate feedback on your questions/comments. I've contacted my local city engineering department a few times when I had a question or two that I needed addressed in person, and it turned out very good.
Well in any case, I hope you get the answer you're looking for and your project goes smoothly.