IDENTIFICATION OF GAMMA-EMITTERS IN AIR BY SCINTILLATION SPECTROMETER

Journal Article · Fri Jan 01 04:00:00 EST 1960 · Kwayon Hwibo

OSTI ID:4740960

Park, T; Kim, T; Suo, K

BS>In order to ascertain that the radioactivity due to fallout from weapons tests is below the MPC values, the concentrations of 8 radioisotopes, Zr/ sup 95/, Nb/sup 95/, Ru/sup 103/, Ba/sup 140/, L a/sup 140/, Ce/sup 141/, Ce/sup 144/, and Cs/sup 137/, in air were determined by means of a scintillation spectrometer from their gamma -spectrum. The energy distribution was detected with the NaI phosphor of the scanning spectrometer. The air was passed through a filter at a rate of 20 ft/sup 3//min after which the paper was ignited and the ashes were analyzed. The Cs/sup 137/ concentration was found to vary as a function of the climate, latitude, longitude, and altitude. The amount of Cs/sup 137/ found in 8000 ft/sup 3/ of air was 82.8 mu mc, equivalent to 1.38 x 10/sup - 2/ mu mc/ft/sup 3/. (TTT)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-007778
• OSTI ID: 4740960
• Journal Information: Kwayon Hwibo, Journal Name: Kwayon Hwibo Vol. Vol: 5
• Country of Publication: Country unknown/Code not available
• Language: Japanese

Related Subjects

AIR
BARIUM 140
BIOLOGY AND MEDICINE
CERIUM 141
CERIUM 144
CESIUM 137
FALLOUT
GAMMA SPECTROMETERS
GEOPHYSICS
LANTHANUM 140
METEOROLOGY
NIOBIUM
NUCLEAR EXPLOSIONS
QUANTITATIVE ANALYSIS
QUANTITY RATIO
RUTHENIUM 103
SCINTILLATION COUNTERS
SODIUM IODIDES
ZIRCONIUM 95