NUCL 6 |
| Since Taylor and Urey first successfully fractionated the lithium isotopes by ion exchange chromatography in 1938, this technique has been experimentally and theoretically developed and widely applied to fractionations of the stable isotopes of elements ranging from hydrogen to uranium. In this presentation, the exposition of the principles of isotope effects expressed in Bigeleisen-Mayer equation in 1947 and its revised one in 1996 will be made using our previously and recently observed data, as well as other available data on the isotope effects of elements from s-, d- and f-block by displacement chromatography in complex formation systems. In the heavy elements, it has been demonstrated that the contribution to the isotope effects are also from the nuclear isotope field shifts in addition to the well-studied molecular vibrational isotope effects, while the revelation of other effects is unclear. |
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Frontiers of Basic and Applied Nuclear Science
9:00 AM-12:30 PM, Sunday, April 6, 2008 Morial Convention Center -- Rm. 252, Oral
Division of Nuclear Chemistry & Technology |