DETERMINATION OF RADIOACTIVE FALLOUT FROM NUCLEAR WEAPON TESTS. I. GAMMA- RAY SPECTROMETRIC DETERMINATION OF SMALL AMOUNTS OF $sup 95$Zr-$sup 95$Nb ADSORBED ON PINE LEAVES

Journal Article · Sun Jan 31 23:00:00 EST 1960 · J. Atomic Energy Soc. Japan

DOI:https://doi.org/10.3327/jaesj.2.67· OSTI ID:4175188

Ueno, K

The gamma-ray spectra of pine leaves collected in 1958 and 1959 show two remarkable peaks. The 0.13 Mev peak is actually a combination of peaks of Ce/sup 141/ and Ce/sup 144/ -Pr/sup 144/, while the 0.76 Mev peak is assigned to Zr/sup 95/-Nb/sup 95/. The decay curves of the gamma activity at 0.76 Mev correspond to curves of Zr/sup 95/-Nb/sup 95/ with half-life of 65 days. One gram of pine leaf ash contains 2 to 6 m mu c Zr/sup 95/s-Nb/sup 95/. (auth)

• Research Organization: Japan Atomic Energy Research Inst., Tokyo
• Sponsoring Organization: USDOE
• NSA Number: NSA-14-012811
• OSTI ID: 4175188
• Journal Information: J. Atomic Energy Soc. Japan, Journal Name: J. Atomic Energy Soc. Japan Vol. Vol: 2
• Country of Publication: Country unknown/Code not available
• Language: Japanese

Related Subjects

ABSORPTION
CERIUM 141
CERIUM 144
COMBUSTION
DECAY
ENERGY LEVELS
FALLOUT
GAMMA RADIATION
GAMMA SPECTROMETERS
HALF-LIFE
HEALTH AND SAFETY INCLUDING DOSIMETRY
NIOBIUM 95
NUCLEAR EXPLOSIONS
PLANTS
PRASEODYMIUM 144
QUANTITATIVE ANALYSIS
RADIOACTIVITY
RESIDUES
TRACE AMOUNTS
ZIRCONIUM 95