A detector (based on the temperature dependence of ferroelectricity in some crystals)
which produces an electrical signal proportional to the energy flux on the collector
surface.
Source:
See also:
PAC, 1995, 67, 1745
(Nomenclature, symbols, units and their usage in spectrochemical analysis-XI. Detection
of radiation (IUPAC Recommendations 1995))
on page 1752