Title:
RADIOACTIVE RAY MEASURING INSTRUMENT
Document Type and Number:
Japanese Patent JP3534456
Kind Code:
B2
Abstract:
PURPOSE: To measure radon daughter nuclide and thoron daughter nuclide by separately measuring radon and thoron when measuring them.
CONSTITUTION: In a measurement container 28, radon daughter nuclide and thoron daughter nuclide are captured by an electrode 44 which is a negative electrode. Therefore, α rays from radon and thoron as parent nuclides and αrays from the daughter nuclides are detected in an ionization box 30. Only radon and thoron are detected in the ionization box 32. The total count value and the details are individually, simply, and economically obtained in real time by a signal processing part 26.
Inventors:
Sato, Hiroo
Tsujimoto, Tadashi
Yamazaki, Keizo
Iida, Takao
Tsujimoto, Tadashi
Yamazaki, Keizo
Iida, Takao
Application Number:
JP27327894A
Publication Date:
June 07, 2004
Filing Date:
November 08, 1994
Export Citation:
Assignee:
ALOKA CO LTD
International Classes:
G01T1/167; G01T1/185; G01T7/02; H01J47/02; (IPC1-7): G01T1/185; G01T1/167; G01T7/02; H01J47/02
Attorney, Agent or Firm:
吉田 研二 （外１名）
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