CLEAN : Scientists in Britain announce they have smashed fusion energy record

A European team of scientists and engineers has made significant progress in fusion research over the past six months. By using a deuterium-tritium mix and leveraging decades of fusion knowledge, they have successfully produced a sustained fusion plasma. This achievement resulted in the release of 59 mega joules of fusion energy during a 5-second pulse, overcoming numerous challenges along the way.

Describe the challenges faced in producing a sustained fusion plasma.

How long did the fusion energy release last during the pulse?