0 relating to substances that are heated to higher than their critical temperature and pressure (= the highest temperature and pressure at which a gas can be changed into a liquid), resulting in changes to the way they behave:
Many common chemicals can go supercritical, for instance water, carbon dioxide and ethylene, used to make polythene shopping bags.
Carbon dioxide, when it goes supercritical at just over 30C, was first used in the 1960s for extracting the caffeine from coffee beans without leaving a chemical residue.
a new generation of supercritical coal-fired power stations
They squeezed the gas to almost 100 times atmospheric pressure but heated it to just 35C. Once in the supercritical state, the ketones were added.
Generally, smaller (order 0.1) input g yielded supercritical outputs, and larger (order 10) g subcritical outputs, which we now describe.
A locally supercritical flow is formed, which jumps a t some location to a subcritical state.
Everything after this, including the re-initiation mechanism for the supercritical case, is irrelevant if we are only concerned with the critical energy.
According to the model equations, in the supercritical range, chaotic oscillations with intermittently growing amplitudes occur, resulting in repeated global flow reversals in the loop.
