Another application of sputtering is to etch away the target material.

Generally, it is applied in a thin film to the target material.

Each year, the major isotope producers use or stockpile enough target material to make a small number of bombs.

Uranium carbide is also a popular target material for particle accelerators.

No target material should survive the shock pressures accompanying the requisite impact.

Unlike the pre-1971 roentgen, the gray has always been defined independently of any target material.

The target material must be able to withstand the added heat.

During excavation, the crater grows as the accelerated target material moves away from the impact point.

Both the target material and some of the product isotopes are listed below.

After the lift-off, the target material remains only in the regions where it had a direct contact with the substrate.