A graphite transmission ionization chamber.
A pancake-type transmission chamber made of high-purity graphite and open to the atmosphere has been designed and constructed at the Secondary Standard Dosimetry Laboratory (SSDL-Rio de Janeiro). Tests performed on the chamber following the International Electrotechnical Commission recommendations indicate that its performance characteristics are comparable to those expected from a secondary standard ionization chamber.
Austerlitz
C
C
Instituto de Radioproteção e Dosinetria, Comissão Nacionai de Energia Nuclear, Rio de Janeiro, Brazil.
Sibata
C H
CH
de Almeida
C E
CE
D003037:Cobalt Radioisotopes; D006108:Graphite; D006801:Humans; D011829:Radiation Dosage; D011867:Radioisotope Teletherapy / Q000295:instrumentation; D011878:Radiotherapy / Q000295:instrumentation*; D011879:Radiotherapy Dosage
D003037:Cobalt Radioisotopes; D006108:Graphite