Measurement of U and Pu concentration by X-ray fluorescence spectrometry using vertical irradiation system.

; ; ; Ikeda, Hisashi ; Jitsukata, Shu*;

JNC TN8410 2000-022, 55 Pages, 2000/05

JNC-TN8410-2000-022.pdf:1.57MB

Measurement of U and Pu concentrations by wavelength dispersion type X-ray fluorescence spectrometry was studied. Sample holder was installed inside of glove box and other instruments, X-ray tube, monochromator and detectors were set out side of the glove box. X-rays was irradiated to sample though Be window. Fluorescent X-rays form sample were also passing though the same Be window and detected outside. Analytical conditions were optimized as follows. Sample thickness is 8 mm, which is 3ml of sample volume by the sample holder. Voltage and eurrent for X-ray tube is 50kV and 40 mA, respectively. Measurement was done twice, 60 seconds each, and averaged X-ray intensity was used to calculate elemental concentrations. Matrix correction was necessary to measure U and Pu concentration within 10% accuracy. Detection limits were calculated to 0.4 mg/L for U and 0.7mg/L for Pu. Calibration curve was liner up to 9 g/L fbr U and Pu. Two calculation methods, calibration curve method and standard addition method, were studied to measure Pu concentration in organic solution. Detection limit was 5.3 mg/L and 0.2 mg/L, respectively.

Direct measurement of fluorescence characteristics of aquatic humic substances by three-dimensional fluorescence spectrophotometer

Nagao, Seiya; Suzuki, Yasuhiro*; Nakaguchi, Yuzuru*; ; Hiraki, Keizo*

Bunseki Kagaku, 46(5), p.335 - 342, 1997/00

https://doi.org/10.2116/bunsekikagaku.46.335

no abstracts in English

Development of water level gauge with binary coding thermocouples and its application to measurement of in-vessel reactor water level

Ara, Katsuyuki; Katagiri, Masaki; ; ; K.P.Termaat*; T.Johnsen*

Nihon Genshiryoku Gakkai-Shi, 35(11), p.999 - 1014, 1993/11

https://doi.org/10.3327/jaesj.35.999

no abstracts in English

Measurement of nuclear heat deposition in structural materials due to 14MeV neutron by a microcalorimeter

Ikeda, Yujiro

Hoshasen, 19(3), p.39 - 47, 1993/00

no abstracts in English