A
gas-filled X-ray detector in which the
electric potential is high enough for the gain to reach a value in the range from
to
.
Each electron produced by the initial photo-
ionization causes one avalanche. Since the number of avalanche events is proportional to the
energy of the incident photons, the charge collected by the
anode is proportional to the X-ray photon energy.
Source:
PAC, 1995, 67, 1745
(Nomenclature, symbols, units and their usage in spectrochemical analysis-XI. Detection
of radiation (IUPAC Recommendations 1995))
on page 1754
Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
https://doi.org/10.1351/goldbook.
