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    • 17. 发明授权
    • Electret devices for measuring ionizing radiation
    • 用于测量电离辐射的驻极体装置
    • US4401891A
    • 1983-08-30
    • US226760
    • 1981-01-21
    • Jacques LewinerGerard DreyfusDidier Perino
    • Jacques LewinerGerard DreyfusDidier Perino
    • G01T1/14G01T1/142G01T1/18
    • G01T1/142
    • The device comprises, on the one hand, a cassette containing an electret between two electrodes and, on the other hand, a fixed reader adapted to receive the cassette in a pocket, to identify it, to measure the charge of its electret and to display data relating to this charge. This reader comprises also a head adapted to record the data on an area (or strip) of the cassette and there are provided readers independent of the aforesaid reader adapted to subsequently receive the cassette, to measure the charge of its electret, to read the data and, by difference between the measured value and that read, to display the radiation dose received by the cassette since its recording.
    • 该装置一方面包括在两个电极之间包含驻极体的盒,另一方面,包括适于将盒子收纳在口袋中的固定读取器,以识别它,以测量其驻极体的电荷并显示 与此费用有关的数据。 该阅读器还包括头部,其适用于将数据记录在盒的区域(或条带)上,并且提供独立于上述读取器的读取器,其适于随后接收盒式磁带,以测量其驻极体的电荷,以读取数据 并且通过测量值和读取之间的差异来显示由于记录而被盒子接收的辐射剂量。