منابع مشابه
The Separation of Chlorine into Isotopes (Isotopic Elements) and the Whole Number Rule for Atomic Weights.
The purpose of this note is to outline a theory elaborated by the author Which appears to afford satisfactory explanation of much of the published data relating to the degradation of carbohydrates by enzyme systems both "in vivo" and "in vitro." Experimental work to test the theory has been in progress for some time' and on completion may necessitate certain modifications. As this is intended t...
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The concept of atomic weights (relative atomic masses) of chemical elements and molecular weights (relative molecular masses) of chemical compounds is fundamental to chemistry and the problem to determine their values has captured attention of chemists for a long time. On the other hand, fractal ideas of Mandelbrot have been extended to studies of various forms in nature on a wide range of leng...
متن کاملAtomic parity nonconservation and neutron radii in cesium isotopes.
The interpretation of future precise experiments on atomic parity violation in terms of parameters of the Standard Model could be hampered by uncertainties in the atomic and nuclear structure. While the former can be overcome by measurement in a series of isotopes, the nuclear structure requires knowledge of the neutron density. We use the nuclear Hartree–Fock method, which includes deformation...
متن کاملNuclear polarizability of helium isotopes in atomic transitions
Nuclear polarizability of helium isotopes in atomic transitions K. Pachucki1 and A.M. Moro2 1 Institute of Theoretical Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland 2Departamento de FAMN, Universidad de Sevilla, Apartado 1065, 41080 Sevilla, Spain Abstract We estimate the nuclear polarizability correction to atomic transition frequencies in various helium isotopes. This effect is n...
متن کاملSeparation of Isotopes in Space and Time by Gas-Surface Atomic Diffraction.
The separation of isotopes in space and time by gas-surface atomic diffraction is presented as a new means for isotopic enrichment. A supersonic beam of natural abundance neon is scattered from a periodic surface of methyl-terminated silicon, with the ^{20}Ne and ^{22}Ne isotopes scattering into unique diffraction channels. Under the experimental conditions presented in this Letter, a single pa...
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ژورنال
عنوان ژورنال: Nature
سال: 1920
ISSN: 0028-0836,1476-4687
DOI: 10.1038/105617a0