Direct vs Indirect drive for fusion

[Kidphysics]

What is so good about having a hohlraum, and is it destroyed after every pulse?

 

[etudiant]

It serves to provide a relatively uniform source of radiation at shorter wave lengths as it absorbs the laser pulse and heats up.
It is of course destroyed in the process.
The painful reality is that laser fusion has shown itself to be an equally thorny path to controlled fusion as magnetic confinement is. Either approach is still at least an order of magnitude or two short of what is needed, despite huge investments.

 

[raining Pete]

Having a hohlraum is beneficial because it serves as a container for the fusion fuel and helps to amplify and concentrate the energy from the lasers used in the fusion process. It also helps to prevent heat loss and maintain a stable environment for the fusion reaction to occur.

As for whether it is destroyed after every pulse, it depends on the specific design and materials used. Some hohlraums may be able to withstand multiple pulses, while others may need to be replaced after each use. However, advancements in technology and materials have allowed for more durable and long-lasting hohlraums to be developed.