By design, the direct-drive target is essentially preheat-free.
They also found that the observed expansion rates for preheated wires were essentially identical to wires that were not preheated.
X-ray preheating leads to the expansion of the target rear surfaces.
We see that preheat on both surfaces increases with increasing intensity.
Such electrons can preheat the fuel in laser fusion applications.
This may lead to preheating of the target.
X-rays are generated which cannot preheat the material in depth.
The left graph is the control target, the right the radiation preheated target.
