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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.1
- 수록면
- 1,532 - 1,536 (5page)
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초록· 키워드
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For ensuring nuclear safeguards, we report the analytical signal-detection performance of thermal ionization mass spectrometry (TIMS) with continuous heating for the measurement of isotopic ratios in samples containing ultra-trace amounts of uranium. As methods for detecting uranium signals, peakjumping mode using a single detector and static mode using multiple detectors were examined with U100 (10% 235U-enriched) uranium standard samples in the femtogram-to-picogram range. Uranium isotope ratios, n( 235U)/n( 238U), were measured down to levels of 1 fg and 3 fg in static and peak-jumping modes, respectively, while n( 234U)/n( 238U) and n( 236U)/n( 238U) values were measured down to levels of 100 fg in both modes. In addition, the dependency of the 238U signal intensity on sample quantity exhibited similar tendencies in both modes. The precisions of the isotope ratios obtained in the static mode over all sample ranges used in this study were overall slightly higher than those obtained in peakjumping mode. These results indicate that isotope ratio measurements by TIMS with continuous heating are almost independent of the detection method, i.e., peak-jumping mode or static mode, which is characteristic of isotope-ratio measurements using the TIMS method with continuous heating. TIMS with continuous heating is advantageous as it exhibits the properties of multiple detectors within a single detector, and is expected to be used in various fields in addition to ensuring nuclear safeguards
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참고문헌 (19)
참고문헌 신청
D.L. Donohue / 1998 / Strengthening IAEA safeguards through environmental sampling and analysis / J. Alloy. Comp 271-273:11~18
D.L. Donohue / 2002 / Highly sensitive and selective analytical measurements of trace nuclear materials ensure that secret nuclear activities / Anal. Chem 74:28A~35A
J.N. Cooley / 1997 / Current status of environmental sampling for IAEA safeguards / Proc. 19th Annu. ESARDA Symp. Safeguards Nucl. Mater. Manag. Montpellier, France :31~35
S. Usuda / 2006 / Challenge to ultra-trace analytical techniques of nuclear materials in environmental samples for safeguards at JAERI : methodologies for physical and chemical form estimation / Int. J. Environ. Anal. Chem 86:663~675
Y. Aregbe / 2008 / Report on the workshop on measurements of minor isotopes in uranium / ESARDA Bull 40:59~69
D.L. Donohue / 2002 / Highly sensitive and selective analytical measurements of trace nuclear materials ensure that secret nuclear activities / Anal. Chem 74:28A~35A
J.N. Cooley / 1997 / Current status of environmental sampling for IAEA safeguards / Proc. 19th Annu. ESARDA Symp. Safeguards Nucl. Mater. Manag. Montpellier, France :31~35
S. Usuda / 2006 / Challenge to ultra-trace analytical techniques of nuclear materials in environmental samples for safeguards at JAERI : methodologies for physical and chemical form estimation / Int. J. Environ. Anal. Chem 86:663~675
Y. Aregbe / 2008 / Report on the workshop on measurements of minor isotopes in uranium / ESARDA Bull 40:59~69
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