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Quasi-particle structure of proton–hole cobalt isotopes
Nuclear Physics A, 2015Abstract Projected Shell Model calculations have been employed for the description of the ground band in odd mass 57–67Co isotopes. In the present work, quadrupole and monopole pairing interactions as well as quadrupole–quadrupole interactions are effectively included in the Hamiltonian for obtaining various nuclear structure properties using the ...
Anuradha Gupta +6 more
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The movement of cobalt and zinc in soils as indicated by radioactive isotopes
Australian Journal of Agricultural Research, 1957A method has been developed whereby labelled cobalt and zinc were applied to the surface of columns of soil in order to study the movement of these cations under the influence of rainfall and various fertilizer treatments. The results of the investigation demonstrate that in soils of moderate exchange capacity, whether this is provided by clay or by ...
GH Jones, DS Riceman, JO McKenzie
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Beta decay of neutron-rich cobalt and nickel isotopes
Exotic nuclei and atomic masses (ENAM 98), 1998We report on the first β-γ spectroscopy measurements of the neutron-rich 68–70Co and 70–74Ni nuclei, produced in proton-induced fission of 238U and ionized in a laser ion guide coupled to an on-line mass separator. Several γ lines from the decay of these nuclei have been identified, half-lives determined and production cross sections deduced.
S. Franchoo +17 more
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The isotopically exchangeable form of native and applied cobalt in soils
Australian Journal of Soil Research, 1969The experimental conditions and precision of alternative methods of measuring isotopically exchangeable cobalt (Coi.e) were investigated. The values of Coi.e varied from 0.16 to 5.4 p.p.m. for 25 soils and were highly correlated with the sum of cobalt extracted by ammonium acetate and subsequently by quinol, and the relationships between these forms ...
KG Tiller, JL Honeysett, EG Hallsworth
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Radiochemical separation of cobalt by isotopic exchange
Talanta, 1964Abstract The radiochemical separation of cobalt by an isotopic exchange technique has been evaluated for an aqueous 0.5 M oxalic acid system. The optimised procedure requires 6 min for the entire separation and gives cobalt yields of more than 83%.
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Determination of Small Amounts of Cobalt by Isotope Dilution Analysis
Analytical Chemistry, 1962Isotope dilution analysis is combined with solvent extraction and spectrophotometry to produce an effective general method for the determination of constituents that are not extracted quantitatively. Combining isotope dilution with extraction of the cobalt-- 2-nitroso-1-naphthol complex into chloroform results in an accurate and reliable method for the
W. D. Ralph, T. R. Sweet, Inara Mencis
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Lead-isotope study of mineralization in the Cobalt district, Ontario
Canadian Journal of Earth Sciences, 1986Twenty-seven lead-isotope analyses for galena specimens from 14 localities in the Cobalt district represent sulphide-rich interflow sedimentary units in the Archean volcanic sequence, mineralized zones, fracture fillings, and local sulphide concentrations in the Cobalt Group (Proterozoic) sedimentary rocks, and vein-filling and breccia-cementing ...
R. I. Thorpe +3 more
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Isotope Effects in the Hydroformylation of Olefins with Cobalt Carbonyls as Catalysts
The Journal of Physical Chemistry A, 2004The stoichiometric hydroformylation reaction has been shown to consist of two variations: conducted in the presence of stoichiometric amounts of HCo(CO) 4 and CO (Type I) or in the presence of Co 2 (CO) 8 and H 2 (Type II). The main difference between these two types of stoichiometric hydroformylation reactions was believed to be the nature of the ...
Rina Tannenbaum, György Bor
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LEAD ISOTOPE RATIOS FROM THE COBALT–NORANDA AREA, CANADA
Canadian Journal of Earth Sciences, 1965Lead isotope ratios indicate that very old galenas in Archean volcanics and sediments in the vicinity of Timmins, Ontario; Noranda and Val d'Or, Quebec, have had additions of younger lead of the type found near Cobalt, Ontario. The mixture of leads of two distinct ages has produced isotopic ratios which are linearly related.
E. R. Kanasewich, R. M. Farquhar
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The isotopic source composition of cosmic-ray iron, cobalt, and nickel
Advances in Space Research, 2001The isotopic composition of cosmic-ray Fe, Co, and Ni at energies ∼150–500 MeV/nucleon has been measured with the Cosmic-Ray Isotope Spectrometer (CRIS) instrument on ACE. Source abundances have been derived from a leaky-box propagation model using secondary species in the range 41 ≤ A ≤ 55 to constrain the calculated secondary contributions to the Fe,
Wiedenbeck, M. E. +13 more
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