- Jun 18, 2012
I run 38mhz(divide by 4 so 9.6mhz in the cavity dumper) with 2.5ps width pulses in a ring dye. I use methanol and unless the pump is putting oxygen in I have not added anything but dye glycol and methanol. The methanol is pretty much just to get the viscosity right. My dye is a jet so I guess it gets a good oxygen mix on the return line to the pump. It’s laminar but when it hits the exhaust tubing it does splatter in the tube.