21.4 The Valley of Stability: Predicting the Type of
The particles emitted by radioactive nuclei are very energetic and can be easily detected.
Particles are detected in a radiation detector by their interactions with atoms.
The crystals of salts excited by the ionizing radiation are contained in these dosimeters.
The excited electrons are trapped in the crystals.
The electrons relax when the crystals are heated.
The amount of light emitted is determined by the amount of radiation exposure.
Dosimeters are used to monitor a person's exposure.
Section 21.11 talks about the effects and measurement of exposure.
The ionized argon atoms are created by the energetic particles.
When high voltage is heated between a wire in the chamber and the chamber walls, the crystals emit light in proportion to the amount of radiation formed to produce an electrical signal that can be seen on a meter or turned exposure.