Lawson Criteria

picture of John D Lawson

John D Lawson (1923-2008)

Named after the British engineer and physicist John D. Lawson (1923 – 2008), who presented in 1955 an estimation of the required parameters to achieve successful fusion – i.e. more energy out than you have to put in. Lawson’s Criteria specified a minimum value for the product of three parameters, plasma density (n), confinement time (τ)  and temperature (T).

Today’s fusion scientists use the triple product as their figure of merit, which uses slightly diffferent figures from Lawson’s exact parameters; nonetheless the spirit of the Lawson’s analysis remains.

This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014-2018 under grant agreement No 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission.

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