Hey guys
been playing with a new ion source over the last few days
details will follow
managed to get 10mA of ion current out of it over several hours with a nice warm spot appearing on the chamber wall we were testing it in.
In this case a N+ or N2+ not sure of it yet until we do an RBS of the result into Al foil.
We are limited at this stage because of the self bias regime using KE1.5 400A CE diodes (5 in the string)to give 2kV to give the arc in the source
I have ordered KE 1.5 100A (20 in the string)diodes so that I can go to 40mA without the diodes unsoldering themselves while running.
So far I have been able to use 12kV from the supply @ 10mA, so thats 2kV drop for the arc and 10kV for acceleration so 10kV X 10mA gives 100 watts of ion current
Yeh hah!!!
watch this space!!