| 摘要 |
Detector-meter of ionizing radiations, especially for evaluation of radiographic exposure and photographic density, comprising a hermetic detector capsule (10) containing a gaseous dielectric (20), said capsule being substantially cylindrical and having an aluminium ring-shaped body (12) and bases formed of insulating discs (14, 15) that support internally a metallized area (16, 17) the metal being of a high atomic number, and externally aluminium screening discs (18, 19), said capsule being electrically connected to an electronic complex comprising a generator for raising to a high potential one of the metalised areas (16, 17) and a central electronic unit that amplifies the ionic current generated in said capsule (10) and processes the data for evaluation of the determining parameters of said radiations.
|
