Open AccessFast multigrid fluorescent ion chamber with 0.1 ms time response
Author(s) -
Suzuki Motohiro,
Kawamura Naomi,
Lytle Farrel W.,
Ishikawa Tetsuya
Publication year - 2002
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049502000365
Subject(s) - response time , ion , detector , amplitude , fluorescence , range (aeronautics) , ionization chamber , multigrid method , voltage , materials science , dynamic range , physics , grid , rise time , optics , analytical chemistry (journal) , optoelectronics , chemistry , computer science , chromatography , mathematics , computer graphics (images) , quantum mechanics , partial differential equation , composite material , ionization , geometry
A fast multigrid ion chamber for the detection of fluorescent X‐rays has been developed. The structure of 17 grids with close separation was employed to maximize the time response as well as to give sufficient detection efficiency. The measured rise/fall response time to cyclic X‐rays was shorter than that of an existing three‐grid ion chamber by more than one order of magnitude. A 0.13 ms time response was obtained at the 500 V applied voltage, where the detector can stably operate without any discharge. The available frequency range is as high as 1 kHz with a practical amplitude response.