Mass Spectrometric Determination of Burnup

Journal Article · Mon Dec 13 04:00:00 EST 1971 · Nippon Genshiryoku Gakkaishi

DOI:https://doi.org/10.3327/jaesj.13.688· OSTI ID:4695452

Komori, Takuji ^[1]; Tamura, Shuzo ^[1]; Yoshida, Hiroyuki ^[1]; Gunji, Katsubumi ^[1]; Tamura, Kimiko ^[1]

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1. Japan Atomic Energy Research Inst. (JAERI), Tokai (Japan)

Here, the mass spectrometric technique has been applied to the determination of burnup of an irradiated fuel of JRR-1 (20% ²³⁵U, uranyl sulfate solution). Three different methods were used, based respectively on uranium isotopic ratio, and on the measurement of stable fission-product neodymium and molybdenum. The isotopic ratios were measured with a surface ionization type mass spectrometer. The uranium isotopic ratio method consists of the measurement of isotopic change of uranium before and after irradiation. In the neodymium and molybdenum methods, uranium and fission-products neodymium and molybdenum were determined by isotope dilution-mass spectrometry using natural uranium, ¹⁵⁰Nd and ⁹⁶Mo, respectively, as spikes. The burnup was calculated from the ratios of concentration referred to uranium presented by neodymium and molybdenum. While chemical separation is essential prior to mass spectrometry, quantitative recovery of these three elements are not necessary. The results obtained by three methods are in good agreement, and the neodymium method was found to be best in sensitivity, precision and accuracy.

• Research Organization: Japan Atomic Energy Research Inst. (JAERI), Tokai (Japan)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP); US Atomic Energy Commission (AEC)
• NSA Number: NSA-26-014758
• OSTI ID: 4695452
• Journal Information: Nippon Genshiryoku Gakkaishi, Journal Name: Nippon Genshiryoku Gakkaishi Journal Issue: 12 Vol. 13; ISSN 0004-7120
• Publisher: Atomic Energy Society of Japan
• Country of Publication: Japan
• Language: Japanese

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
BURNUP
ISOTOPE DILUTION
JRR-1 REACTOR
MASS SPECTROMETERS
MOLYBDENUM
MOLYBDENUM/determination as measure of fuel burnup by isotope dilution mass spectrometry
NEODYMIUM
NEODYMIUM/determination as measure of fuel burnup by isotope dilution mass spectrometry
NUCLEAR FUELS
Nuclear Criticality Safety Program (NCSP)
QUANTITATIVE CHEMICAL ANALYSIS
REACTOR FUELS/burnup analysis of
by isotope dilution mass spectrometry
REACTORS
RESEARCH/fuel burnup analysis for JRR-1
mass spectrometric
URANIUM ISOTOPES
URANIUM ISOTOPES/determination as measure of fuel burnup by isotope dilution mass spectrometry