GAMMA-RAY SPECTROMETRIC DETERMINATION OF SMALL AMOUNTS OF Zr-, Nb-95 IN SOIL SAMPLES OF NIIGATA CITY AND THE SHINANO RIVER-BED

Journal Article · Thu Jan 31 23:00:00 EST 1963 · Radioisotopes (Tokyo) (Japan)

DOI:https://doi.org/10.3769/radioisotopes.12.11· OSTI ID:4734416

Sakagishi, S; Ueno, K; Minami, K

In the gamma spectra of soil the presence of several peaks that cannot be assigned to any natural nuclide was found. It is clear that these peaks are due to radioactive fission products that are produced from nuclear weapon tests. The gamma spectra of soil samples of Niigata City and the Shinano River-bed collected in May 1962 show three peaks. Peaks at 0..14 and 0.5 Mev are actually a combination of peaks of Ce-141, Ce-144, Pr-144 and Ru-103, Rh-106, respectively, while the 0.76 Mev peak is assigned to Zr-95, Nb-95. Amounts of Zr- 95, Nb-95 were determined by means of the standard comparison method. A soil sample of 150 grams contained about 0.5 to 30 m mu C Zr-95, Nb-95. (auth)

• Research Organization: Japan Atomic Energy Research Inst., Tokyo
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-018308
• OSTI ID: 4734416
• Journal Information: Radioisotopes (Tokyo) (Japan), Journal Name: Radioisotopes (Tokyo) (Japan) Vol. Vol: 12; ISSN RAISA
• Country of Publication: Country unknown/Code not available
• Language: Japanese

Related Subjects

CERIUM 141
CERIUM 144
ENERGY
FALLOUT
FISSION PRODUCTS
GAMMA RADIATION
GAMMA SPECTROMETERS
GEOLOGY, MINERALOGY, AND METEOROLOGY
NIOBIUM 95
NUCLEAR EXPLOSIONS
PRASEODYMIUM 144
QUANTITATIVE ANALYSIS
RHODIUM 106
RUTHENIUM 103
SOILS
SPECTRA
TRACE AMOUNTS
ZIRCONIUM 95