GSI-FAIR Colloquium

Demonstrating Fusion Ignition in the Laboratory for the First Time

by Matthias Hohenberger (Lawrence Livermore National Laboratory)

KBW Lecture Hall (GSI)

KBW Lecture Hall



At approximately 1 am on December 5th, 2022, a fusion experiment at the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory achieved, for the first time, a target gain exceeding 1. By imploding a small capsule containing deuterium-tritium fuel with 2.05 MJ of laser light, the resulting fusion reactions released a total energy of 3.15 MJ of nuclear fusion yield, thus exceeding the initial input energy. This was the first time for a laboratory experiment to meet the 1997 definition by the National Academy of Sciences of fusion ignition, an accomplishment six decades in the making. It is the result of focused work by an international team, spanning multiple laboratories across the world, and required significant advances in high-energy-density physics, as well as laser, target, and diagnostics capabilities. This talk will discuss this momentous result, the steps that went into achieving it, and the implications of this achievement for Inertial Fusion Energy.


Organized by

Wolfgang Quint
Carlo Ewerz
Yury Litvinov