George Miley design for a p-b11 dpf says for a 500kN 2000isp
power 800mw
w = 80mj
vo = 400kv
Q = 3.07
and about 10um per day of ablative material at 10 hz
thrust to weight of 20 – 44 kN/MT
http://nextbigfuture.com/2010/03/dense-plasma-focus-dpf-fusion-systems.html

QED engines are described elsewhere in this and previ