Title:
NEUTRON DETECTOR AND ITS PRODUCTION METHOD
Document Type and Number:
Japanese Patent JP3719748
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To surely prevent corrosion of sensor part by the effect of dissolved oxygen or chloride, etc., in reactor water by sealed-welding the end part of a sealed vessel constituting the sensor part and the outermost part of non- organic insulated coaxial cable.
SOLUTION: In a sealed vessel 11, a cathode 12 and an anode 13 are arranged and on the inner surface of the cathode 12, a neutron converter material 14 is spread and ionized gas 15 is filled. In the non-organic insulated coaxial cable 19, powder insulator 18 is charged. To avoid a space to be a water pool, the end part of the sealed vessel 11 and the outermost part of the non-organic insulated coaxial cable 19 are welded airtight. By this, a gap passing to the outside at the contact part of the sealed vessel 11 and the non-organic insulated coaxial cable 19 is avoided and therefore, the corrosion of metal by the effect of dissolved oxygen or chloride, etc., contained in reactor water can be surely prevented.
Inventors:
Kazuya Ishizawa
Hideto Kato
Hideto Kato
Application Number:
JP33126895A
Publication Date:
November 24, 2005
Filing Date:
December 20, 1995
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G01T3/00; H01J47/12; (IPC1-7): G01T3/00; H01J47/12
Domestic Patent References:
| JP52135783A | ||||
| JP56046478A | ||||
| JP56084767U | ||||
| JP51026584A |
Attorney, Agent or Firm:
Hiroshi Horiguchi