title: [The development of the ionization chamber and the researching of its characteristics for automatic exposure controlling in the X-ray diagnosis machine].
abstract: An ionization chamber for automatic exposure controlling used in X ray diagnosis machine was developped, and its characteristics were measured and researched. The electrodes of measuring field were made of carbon, such couldn't leave it's imaging on the film. In order to increase the ionization efficiency and decrease the thickness and electric capacity between electrodes, the chamber was constructed in multilayers. The chamber we developed can be fixed in different x ray machines convenientlly, there is a fine linearity between it's signal output and the exposures, the beam quality response is uniform and output-timing response is also good.
authors.affiliation: Department of Radiology, Taishan Medical College, Shandong Province.
authors.forename: P
authors.initials: P
authors.lastname: Weng
authors.forename: S
authors.initials: S
authors.lastname: Liu
authors.forename: H
authors.initials: H
authors.lastname: Wang
authors.forename: Y
authors.initials: Y
authors.lastname: Cao
authors.forename: X
authors.initials: X
authors.lastname: Wang
authors.forename: Y
authors.initials: Y
authors.lastname: Li
mesh_terms: D000390:Air Ionization; D001273:Atmosphere Exposure Chambers; D004566:Electrodes; D004867:Equipment Design; D011859:Radiography / Q000295:instrumentation*