Zobrazeno 1 - 10
of 12
pro vyhledávání: '"G. Davis O'kelley"'
Publikováno v:
Journal of Inorganic and Nuclear Chemistry. 37:1111-1114
We tried to produce the 89Mo which had been previously reported as having a t 1 2 of 7·1 min. We used the 90Zr(3He, 4n)89Mo, 93Nb(p, 5n) 89Mo, and 92Mo(p, p3n)89Mo reactions. Molybdenum was chemically separated rapidly from the target, but neither n
Autor:
G. Davis O'kelley, Joseph Halperin
Publikováno v:
ract. 38:1-4
Autor:
Swarajranjan Biswas, Edward M. Stolper, Richard A. Muntean, J. S. Eldridge, Lawrence A. Taylor, Harry Y. McSween, G. Davis O'Kelley, Hung T. Ngo, Michael E. Lipschutz
Publikováno v:
Earth and Planetary Science Letters. 45:275-284
Allan Hills (ALHA) 77005 is a newly discovered, unique achondrite from Antarctica. Petrologic similarities with the shergottites in terms of mineralogy, oxidation state, inferred source region composition, shock metamorphic effects and shock ages sug
Publikováno v:
Physical Review. 130:1466-1470
Half-lives, fission yields, and genetic relationships of Zr, Nb, and Mo members of the mass-99 fissionproduct chain were studied by radiochemical methods. Evidence was obtained for a ${\mathrm{Nb}}^{99}$ isomer of half-life 10\ifmmode\pm\else\textpm\
Publikováno v:
Nuclear Physics A. 136:649-656
The decay of 8.8 min 49Ca was reinvestigated using a 35 cm3 Ge(Li) detector and a scintillation pair spectrometer. Gamma rays were observed with energies (and intensities) of 2229.0 (0.29), 2372.3 (0.45), 3084.4 (100), 4071.9 (8.0), and 4738.2 (0.30)
Publikováno v:
Nuclear Physics A. 169:209-224
The decay properties of 14 min 101Tc have been investigated by the use of Ge(Li) and NaI(TI) γ-ray and anthracene β-ray detectors. Coincidence relationships between the γ-rays were determined with the aid of a multiparameter analyzer. Numerous γ-
Publikováno v:
Physical Review. 146:899-906
Publikováno v:
Science. 175:440-443
Two basalts, two breccias, and two soils from Apollo 15 were analyzed by nondestructive gamma-ray spectrometry. The concentrations of potassium, thorium, and uranium in the basalts were similar to those in the Apollo 12 basalts, but the potassium:ura
Publikováno v:
Science (New York, N.Y.). 167(3918)
A gamma-ray spectrometry system with low background was used to determine the radioactivity of crystalline rocks, breccias, and fine material. Nuclides identified were 40 K, 232 Th, 238 U, 7 Be, 22 Na 26 A1, 44 Ti, 46 Sc, 48 V, 52 Mn, 54 Mn, and 56 C
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