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Chamber
(redirected from free-air ionization chamber)

    Also found in: Dictionary/thesaurus, Medical, Encyclopedia, Wikipedia 0.07 sec.

CHAMBER. A room in a house.
     2. It was formerly hold that no freehold estate could be had in a chamber, but it was afterwards ruled otherwise. When a chamber belongs to one person, and the rest of the house with the land is owned by another the two estates are considered as two separate but adjoining dwelling house's. Co. Litt. 48, b; Bro. Ab. Demand, 20; 4 Mass. 575; 6 N. H. Rep. 555; 9 Pick. R. 297; vide 3 Leon. 210; 3 Watts. R. 243.
     3. By chamber is also understood the place where an assembly is held; and, by the use of a figure, the assembly itself is called a chamber.



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More recently, NIST added a new cylindrical free-air ionization chamber of an Attix design [5] to provide air-kerma standardization for mammography x-ray beams from both Mo and Rh anodes operated in the 23 kVp to 40 kVp range [6].
New national air-kerma-strength standards for [.sup.125]I and ... by Coursey, Bert M. / Journal of Research of the National Institute of Standards and Technology
For a free-air ionization chamber standard with measuring volume V, the air-kerma rate is determined by the relation
Comparison of the NIST and BIPM medium-energy x-ray air-kerma ... by Boutillon, M. / Journal of Research of the National Institute of Standards and Technology
The instrument most nearly suitable for exposure measurements of radiation from iodine-125 is the Ritz [2] free-air ionization chamber (
Exposure standardization of iodine-125 seeds used for brachytherapy by Loftus, T.P. / Journal of Research of the National Institute of Standards and Technology
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