THE PRIMORDIAL TRANSURANIUM ISOTOPE IN NATURE

Journal Article · Tue Jan 01 00:00:00 EST 1963 · Geokhimiya (U.S.S.R.) For English translation 1956-63 see Geochemistry (USSR)

OSTI ID:4748393

Cherdyntsev, V V; Mikhailov, V F

In some young natural samples a primordial radioactive alpha -emitter is obtained. The alpha -spectrum main line extends from 4.2 to 4.6 Mev and the gamma rays have the energy in the region: 90 to 250 kev. This isotope, apparently, is Cm/sup 247/. Decay products of Am/sup 243/ and Pu/sup 239/ accompany it. The Cm/sup 247/ content in natural minerals is about n x 10/sup -8/ % and Cm/sup 247//U/sup 238/ = n x 10/sup -2/ (activity units). The decay period of the isotope is estimated as 2.5 x 10/sup 8/ years. (auth)

• Research Organization: Geological Inst., Moscow
• NSA Number: NSA-17-016274
• OSTI ID: 4748393
• Journal Information: Geokhimiya (U.S.S.R.) For English translation 1956-63 see Geochemistry (USSR), Vol. Vol: No. 1; Other Information: Orig. Receipt Date: 31-DEC-63
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

GEOLOGY, MINERALOGY, AND METEOROLOGY
ALPHA DECAY
ALPHA PARTICLES
AMERICIUM 243
CURIUM 247
DISTRIBUTION
ENERGY
ENERGY RANGE
HALF-LIFE
MINERALS
PLUTONIUM 239
QUANTITY RATIO
RADIOACTIVITY
SPECTRA
URANIUM 238