What instrument us used to measure Nuclear Energy?

Answer 1

The power level of a nuclear reactor can be directly measured using a detector chamber which gives a current output proportional to the neutron flux it is situated in. The instrument will need to be calibrated by comparing its reading with a value of the reactor thermal output power obtained by thermal measurements, and its sensitivity may vary with changes in reactor flux shape due to control rod movements, but it is useful to have a quickly monitored indication of power and it is essential when changing power level. Also these instruments can feed into safety circuits to detect reactor power increasing too rapidly and shut the reactor down if necessary.

Answer 2

A Geiger-Muller counter is commonly used to measure nuclear energy. It detects ionizing radiation such as alpha, beta, and gamma radiation emitted by the nucleus of an atom. It provides a way to quantify the level of nuclear activity in a given environment.