For Researchers · Fusion (Lawson)
Fusion (Lawson) for a criticality test
Built for researchers prototyping or validating an idea. Prototype fast, reproduce exactly, and share a citable, interactive version of your model. Simulate a criticality test live below — adjust the inputs and watch it respond, right in your browser.
Fusion (Lawson Criterion)Live
the recipe for a star on Earth
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To get more fusion energy out than you put in, a plasma must be hot enough, dense enough, and confined long enough — captured together in the triple product n·τ·T. The Lawson criterion sets the threshold for ignition, where the fusion self-heats. Crossing it, at over 100 million degrees, is the decades-long goal of tokamaks and laser fusion.
Data Inspector
Triple product1.50e+21
Fraction of ignition50%
Statussub-ignition
Governing equation
Reading this result: Sub-ignition at 50% — the plasma leaks heat faster than fusion replaces it, so raise density, confinement time, or temperature to close the gap.
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- Is this good for researchers?
- Yes — this version of "Fusion (Lawson) for a criticality test" is framed for researchers prototyping or validating an idea. Prototype fast, reproduce exactly, and share a citable, interactive version of your model.
- Do I need to install anything?
- No. It runs in any modern browser, free, with no account required.