Transport Barrier

A region of suppressed turbulence and steep gradients that boosts confinement.

A transport barrier is a layer where turbulence is quenched — often by sheared flow — allowing steep pressure gradients and improved confinement. The H-mode pedestal is the best-known example.

A transport barrier is a layer where turbulence is quenched — usually by sheared flow — allowing steep gradients and improved confinement. The H-mode pedestal is the edge example; a reversed-shear core can host an internal one, and together they define the high-performance regimes a power plant aims for.