An alpha-particle imaging system for detecting plutonium contamination

Takao Iida*, Seiichi Yamamoto, Yukimasa Ikebe, Akio Seki, Kei Nakata, Minoru Ebana, Masashi Kanamori, Mamoru Yoshida

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


A new type of alpha-particle imaging system was constructed to reduce the time required for detecting plutonium contamination. The imaging system consists of a ZnS(Ag) screen, two tapered fibers, an image intensifier, and Polaroid film. Spots due to single alpha-particles can easily be obtained on the Polaroid film. The observed spatial resolution is more than 3 lp/mm. This system requires about one-seventh of the exposure time required by ZnS(Ag) autoradiography in order to distinguish between plutonium contamination and radon and thoron daughter products.

Original languageEnglish
Pages (from-to)413-418
Number of pages6
JournalNuclear Instruments and Methods In Physics Research
Issue number1-3
Publication statusPublished - 1983 Jul 1
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)


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