temperature-jump relaxation technique

chemistry

Also known as: T-jump relaxation technique

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July 14, 2026

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The temperature-jump relaxation technique is a method used in chemistry to study fast reactions. It involves suddenly changing the temperature of a system, which disrupts its equilibrium. Scientists then observe how the concentrations of reactants change over time as the system returns to a new equilibrium state.1

This technique is particularly useful for studying reactions that occur very quickly, often within microseconds. A common way to achieve the rapid temperature increase is by passing a strong electric current through the solution. By measuring the rate at which the system re-establishes equilibrium, researchers can determine the speed of the chemical reaction. This method has been instrumental in understanding reaction mechanisms and kinetics.1234

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relaxation phenomenon
Temperature-jump experiment
To summarize and clarify this discussion, a temperature-jump relaxation experiment—an important technique in relaxation studies—will be described. In this technique the equilibrium of a system is disrupted by suddenly changing the temperature and observing the concentrations of the reactants as a function of…
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To summarize and clarify this discussion, a temperature-jump relaxation experiment—an important technique in relaxation studies—will be described. In this technique the equilibrium of a system is disrupted by suddenly changing the temperature and observing the concentrations of the reactants as a function of…
Read More

chemical kinetics
Measuring fast reactions
…the method is called the temperature-jump, or T-jump, method. Techniques have been developed for raising the temperature of a tiny reaction vessel by a few degrees in less than 100 ns. The method is therefore not suitable for the fastest processes, which can be studied by flash photolysis, but many…
Read More
…the method is called the temperature-jump, or T-jump, method. Techniques have been developed for raising the temperature of a tiny reaction vessel by a few degrees in less than 100 ns. The method is therefore not suitable for the fastest processes, which can be studied by flash photolysis, but many…
Read More