Configuration Mixing in the Calcium Isotopes

1970 ◽  
Vol 24 (4) ◽  
pp. 145-148 ◽  
Author(s):  
L. R. B. Elton ◽  
S. J. Webb
Keyword(s):  
Calcium Isotopes ◽  
Configuration Mixing

Influences on the fractionation of calcium isotopes in planktonic foraminifera

2008 ◽  
Vol 268 (1-2) ◽  
pp. 124-136 ◽  
Author(s):  
Elizabeth M. Griffith ◽  
Adina Paytan ◽  
Reinhard Kozdon ◽  
Anton Eisenhauer ◽  
A. Christina Ravelo
Keyword(s):  
Planktonic Foraminifera ◽  
Calcium Isotopes

The charge distributions of the oxygen and calcium isotopes

1979 ◽  
Vol 85 (2-3) ◽  
pp. 167-171 ◽  
Author(s):  
B.A. Brown ◽  
S.E. Massen ◽  
P.E. Hodgson
Keyword(s):  
Calcium Isotopes ◽  
Charge Distributions

Triple forking and configuration mixing in 68Ge

1981 ◽  
Vol 371 (1) ◽  
pp. 19-31 ◽  
Author(s):  
K.J. Weeks ◽  
C.S. Han ◽  
J.P. Draayer
Keyword(s):  
Configuration Mixing

Atomic Diamagnetism and Diamagnetically Induced Configuration Mixing in Laser-Excited Barium

1977 ◽  
Vol 39 (24) ◽  
pp. 1513-1516 ◽  
Author(s):  
R. J. Fonck ◽  
F. L. Roesler ◽  
D. H. Tracy ◽  
K. T. Lu ◽  
F. S. Tomkins ◽  
...  
Keyword(s):  
Configuration Mixing

Untersuchung von Calciumisotopieeffekten bei heterogenen Austauschgleichgewichten / Investigation of Isotopic Effects of Calcium in Heterogeneous Exchange Equilibria

1972 ◽  
Vol 27 (2) ◽  
pp. 126-133 ◽  
Author(s):  
Klaus Gustav Heumann ◽  
Karl Heinrich Lieser
Keyword(s):  
Separation Factor ◽  
Calcium Concentration ◽  
Isotopic Fractionation ◽  
Ion Source ◽  
Isotopic Effect ◽  
Mass Unit ◽  
Calcium Isotopes ◽  
Heterogeneous Exchange ◽  
Loaded Column ◽  
Isotopic Effects

The following heterogeneous exchange equilibria have been examined for isotopic effects: CaCO3/Ca(aq.)2⊕. Ca-GBHA/Ca(aq.)2⊕ and Ca(Dowex 50)2⊕/Ca(aq.)2⊕ (GBHA = glyoxal-bis (2-hydroxyanil)). The isotopic ratios 44Ca/40Ca and 48Ca/40Ca were determined by means of a mass spectrometer with a thermal ion source. In the system CaCO3/Ca(aq.)2⊕, the elementary separation factor was found to be less than 1‰ or 0,5‰ per mass unit, respectively.For the exchange in the system Ca-GBHA/Ca(aq.)2⊕ in the concentration range from 0.011 to 0.84 M an elementary separation factor less than 1‰ per mass unit was found; from a three-stage experiment at a calcium concentration of 1.23 M it was concluded that the elementary isotopic effect is less than 0.4‰ per mass unit. Therefore no isotopic fractionation is to be expected for precipitation of inorganic or organic calcium salts.An enrichment of the heavier calcium isotopes in the solution was found in the case of the exchange in a Dowex 50-X12 loaded column. The isotopic effect depends on the concentration of the hydrochloric acid used as the eluent.

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