Wiktionary
perchloroethylene
n. An alternative name for tetrachloroethene, a non-combustible solvent commonly used in dry cleaning.
Usage examples of "perchloroethylene".
It is easier to use perchloroethylene, which is a liquid at ordinary temperature and pressure, and which is made up of molecules that each contain two carbon atoms and four chlorine atoms.
The presence of the carbon atoms does not interfere and perchloroethylene is reasonably cheap.
Naturally, the more energetic a neutrino, the more likely it is to induce a nuclear change and the perchloroethylene detects only the most energetic neutrinos.
The advantage of gallium over perchloroethylene is that gallium will detect neutrinos of lower energy than perchloroethylene will.