A convenient method for discriminating between natural and depleted uranium by γ-ray spectrometry

Miki Shoji; Yasunori Hamajima; Kiyofumi Takatsuka; Hiroshi Honoki; Tomoko Nakajima; Takashi Kondo; Takashi Nakanishi

doi:10.1016/S0969-8043(00)00391-2

A convenient method for discriminating between natural and depleted uranium by γ-ray spectrometry

Miki Shoji^*, Yasunori Hamajima, Kiyofumi Takatsuka, Hiroshi Honoki, Tomoko Nakajima, Takashi Kondo, Takashi Nakanishi

^*Corresponding author for this work

Faculty of Medicine

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

A convenient method for discriminating between natural and depleted uranium reagent was developed by measuring and analyzing the γ-ray spectra of some reagents with no standard source. The counting rates (R) of photoelectric peaks of γ-rays from nuclides with the same radioactivity divided by their emission probability (B) are expressed as a function of γ-ray energy. The radioactivities of ²³⁴Th and ^234mPa and 21.72 times that of ²³⁵U are equal to the radioactivity of ²³⁸U in natural uranium. Therefore, the plot of 21.72-fold R/B for ²³⁵U should be on a curve fitted to the points for ²³⁴Th and ^234mPa in natural uranium. Depleted uranium with a ²³⁵U isotopic composition of less than 0.68% could be discriminated from natural uranium in the case of a reagent containing 4.0 g of uranium.

Original language	English
Pages (from-to)	221-227
Number of pages	7
Journal	Applied Radiation and Isotopes
Volume	55
Issue number	2
DOIs	https://doi.org/10.1016/S0969-8043(00)00391-2
State	Published - 2001

Keywords

Bateman solution
Depleted uranium
Discrimination
Natural uranium
Radioactive equilibrium
Uranium mineral
γ-ray spectrometry

ASJC Scopus subject areas

Radiation

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10.1016/S0969-8043(00)00391-2

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title = "A convenient method for discriminating between natural and depleted uranium by γ-ray spectrometry",

abstract = "A convenient method for discriminating between natural and depleted uranium reagent was developed by measuring and analyzing the γ-ray spectra of some reagents with no standard source. The counting rates (R) of photoelectric peaks of γ-rays from nuclides with the same radioactivity divided by their emission probability (B) are expressed as a function of γ-ray energy. The radioactivities of 234Th and 234mPa and 21.72 times that of 235U are equal to the radioactivity of 238U in natural uranium. Therefore, the plot of 21.72-fold R/B for 235U should be on a curve fitted to the points for 234Th and 234mPa in natural uranium. Depleted uranium with a 235U isotopic composition of less than 0.68% could be discriminated from natural uranium in the case of a reagent containing 4.0 g of uranium.",

keywords = "Bateman solution, Depleted uranium, Discrimination, Natural uranium, Radioactive equilibrium, Uranium mineral, γ-ray spectrometry",

author = "Miki Shoji and Yasunori Hamajima and Kiyofumi Takatsuka and Hiroshi Honoki and Tomoko Nakajima and Takashi Kondo and Takashi Nakanishi",

year = "2001",

doi = "10.1016/S0969-8043(00)00391-2",

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journal = "Applied Radiation and Isotopes",

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TY - JOUR

T1 - A convenient method for discriminating between natural and depleted uranium by γ-ray spectrometry

AU - Shoji, Miki

AU - Hamajima, Yasunori

AU - Takatsuka, Kiyofumi

AU - Honoki, Hiroshi

AU - Nakajima, Tomoko

AU - Kondo, Takashi

AU - Nakanishi, Takashi

PY - 2001

Y1 - 2001

N2 - A convenient method for discriminating between natural and depleted uranium reagent was developed by measuring and analyzing the γ-ray spectra of some reagents with no standard source. The counting rates (R) of photoelectric peaks of γ-rays from nuclides with the same radioactivity divided by their emission probability (B) are expressed as a function of γ-ray energy. The radioactivities of 234Th and 234mPa and 21.72 times that of 235U are equal to the radioactivity of 238U in natural uranium. Therefore, the plot of 21.72-fold R/B for 235U should be on a curve fitted to the points for 234Th and 234mPa in natural uranium. Depleted uranium with a 235U isotopic composition of less than 0.68% could be discriminated from natural uranium in the case of a reagent containing 4.0 g of uranium.

AB - A convenient method for discriminating between natural and depleted uranium reagent was developed by measuring and analyzing the γ-ray spectra of some reagents with no standard source. The counting rates (R) of photoelectric peaks of γ-rays from nuclides with the same radioactivity divided by their emission probability (B) are expressed as a function of γ-ray energy. The radioactivities of 234Th and 234mPa and 21.72 times that of 235U are equal to the radioactivity of 238U in natural uranium. Therefore, the plot of 21.72-fold R/B for 235U should be on a curve fitted to the points for 234Th and 234mPa in natural uranium. Depleted uranium with a 235U isotopic composition of less than 0.68% could be discriminated from natural uranium in the case of a reagent containing 4.0 g of uranium.

KW - Bateman solution

KW - Depleted uranium

KW - Discrimination

KW - Natural uranium

KW - Radioactive equilibrium

KW - Uranium mineral

KW - γ-ray spectrometry

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U2 - 10.1016/S0969-8043(00)00391-2

DO - 10.1016/S0969-8043(00)00391-2

M3 - 学術論文

C2 - 11393763

AN - SCOPUS:0035085249

SN - 0969-8043

VL - 55

SP - 221

EP - 227

JO - Applied Radiation and Isotopes

JF - Applied Radiation and Isotopes

IS - 2

ER -

A convenient method for discriminating between natural and depleted uranium by γ-ray spectrometry

Abstract

Keywords

ASJC Scopus subject areas

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