Open AccessAlpha-ray imaging chamber based on a micro-TPC in a low radioactivity structure
Author(s) -
Hiroshi Itô,
K. Miuchi,
Kazuyoshi Kobayashi,
Y. Takeuchi,
K. Nakamura,
Tomonori Ikeda,
Hirohisa Ishiura
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1468/1/012233
Subject(s) - detector , time projection chamber , sample (material) , physics , x ray , ionization chamber , sensitivity (control systems) , optics , radiochemistry , materials science , chemistry , ion , engineering , electronic engineering , thermodynamics , quantum mechanics , ionization
An α -ray imaging chamber has been developed based on a gaseous micro-time-projection chamber with a low- α emission μ -PIC in a low radioactivity structure. The detector offers the advantage of position sensitivity, which allows to image the α -ray contamination for the sample. It measures the α -ray rate in the sample region and a background region at the same time, thus that the net α rate from the sample can be evaluated efficiently by subtracting these rates from each other. In this work, the measurement results for several samples using the detector is provided.