Title:
IONIZATION CHAMBER AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2020/054511
Kind Code:
A1
Abstract:
This ionization chamber is provided with: a cylindrical external electrode (101); a rod-like inner electrode (102) which is internally contained in the external electrode (101) so as to extend in an axial direction L from one end (101a) side of the external electrode to the other end (101b) side; a cylindrical guard electrode (103) which is provided between the external electrode (101) and the inner electrode (102) on the one end (101a) side so as to surround the side wall of the inner electrode (102); an insulation part (104) which is provided between the inner electrode (102) and the guard electrode (103) on the one end (101a) side; and an electron shielding part (105) which is formed of an electrically insulating material and is provided in a region A that spreads beyond the front end (103a) of the guard electrode (103) toward the other end (101b) side.
Inventors:
MORISHITA YUICHIRO (JP)
SHIMIZU MORIHITO (JP)
SHIMIZU MORIHITO (JP)
Application Number:
PCT/JP2019/034593
Publication Date:
March 19, 2020
Filing Date:
September 03, 2019
Export Citation:
Assignee:
AIST (JP)
International Classes:
H01J47/02; A61N5/10; G01T1/185
Foreign References:
| EP2728606A2 | 2014-05-07 | |||
| JPH0434829A | 1992-02-05 | |||
| JP2008534950A | 2008-08-28 | |||
| JPH0410349A | 1992-01-14 |
Attorney, Agent or Firm:
NISHIZAWA Kazuyoshi et al. (JP)
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