Alpha-ray imaging chamber based on a micro-TPC in a low radioactivity structure

Hiroshi Ito, Kentaro Miuchi, Kazuyoshi Kobayashi, Yasuo Takeuchi, Kiseki D. Nakamura, Tomonori Ikeda, Hirohisa Ishiura

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


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.

Original languageEnglish
Article number012233
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2020 Mar 20
Event16th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2019 - Toyama, Japan
Duration: 2019 Sept 92019 Sept 13


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