Title:
【発明の名称】放射性廃棄物中の超ウラン元素分析方法
Document Type and Number:
Japanese Patent JP2970847
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve resolution, by using an external γ-ray source with a plurality of γ-ray peaks and a reference waste, obtaining an absorption correction coefficient for each TRU (ultra uranium element) and correcting transmittancy, and accurately correcting a counting rate. SOLUTION: An external γ-ray source 10 is fixed and counting rates I01 , I02 ,... of each γ-ray peak being discharged from the external γ-ray source 10 are measured by a germanium detector 3 without installing any waste on a turntable 2. A reference waste is installed on the truntable 2, and the counting rates IS1 , IS2 ,... of each γ-ray peak of the external γ-ray source 10 are measured. Transmittancy Ts =Is /IO of the reference waste is calculated, thus calculating an absorption correction coefficient. A measurement target waste 1 is installed on the turntable 2, and the counting rate of each γ-ray peak that is discharged from the external γ-ray source 10 and is transmitted through the measurement target waste 1 is measured by the germanium detector 3. By multiplying a measured counting rate by the absorption correction coefficient, the true counting rate of the γ-ray peak of each TRU can be obtained.
Inventors:
USUI KAZUYA
IEMURA KEISUKE
SUKEGAWA YASUHIRO
TADOKORO HIDEAKI
IEMURA KEISUKE
SUKEGAWA YASUHIRO
TADOKORO HIDEAKI
Application Number:
JP34295097A
Publication Date:
November 02, 1999
Filing Date:
December 12, 1997
Export Citation:
Assignee:
KAKUNENRYO SAIKURU KAIHATSU KIKO
International Classes:
G01T1/167; G21C17/06; (IPC1-7): G01T1/167; G21C17/06
Domestic Patent References:
| JP527044A | ||||
| JP10268055A | ||||
| JP10239438A | ||||
| JP1048342A |
Attorney, Agent or Firm:
Yukio Ogata