I came back too late to edit the last post I made so I will add this as a new post. In my previous description of the gamma ray pulse emitting Hf178 isomer weapon I had said that the Hafnium was sputtered onto a mica target that would act as a gamma ray window for the device. The material for that is instead synthetic sapphire which acts as a scaffold to hold the Hf178 isomer in front of the x-ray tube and can take the very high heat generated by the tube when it is being electrically pumped. Initial concept model unit is about the package size of a large 6 D cell flashlight and weighs less than 40 lbs with shielding in place.

I also said 50 meter kill area and that is way off as the number is more like 50 feet. A much smaller sure kill zone than I previously stated for the 5kW pulse device. Larger sized units would of course produce more energy but the power supply limits this for flight capability for delivery of the weapon. Super-capacitor bank can hold one charge of sufficient density for one shot likely activated upon terminal guidance for the drone it is mounted on.

The cost at today's value for this special Hf178 isomer would be something on the order of 3 million per shot. That is high even for a drone weapon and the only advantage is that it would not make much noise.