The New Element Californium (Atomic Number 98)
نویسندگان
چکیده
منابع مشابه
Californium gleaming.
A late actinide with twenty known isotopes, californium is a manmade transuranic element that does not occur naturally. It was first identified by Glenn Seaborg and co-workers in February 1950 in an experiment that used a 60-inch cyclotron to bombard curium-242 targets with helium ions. Although named primarily for the State of California, it also recognizes the University of California at Berk...
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Yu. Ts. Oganessian,* F. Sh. Abdullin, P. D. Bailey, D. E. Benker, M. E. Bennett, S. N. Dmitriev, J. G. Ezold, J. H. Hamilton, R.A. Henderson, M.G. Itkis, Yu. V. Lobanov, A.N. Mezentsev, K. J. Moody, S. L. Nelson, A.N. Polyakov, C. E. Porter, A. V. Ramayya, F. D. Riley, J. B. Roberto, M.A. Ryabinin, K. P. Rykaczewski, R. N. Sagaidak, D. A. Shaughnessy, I. V. Shirokovsky, M.A. Stoyer, V.G. Subbot...
متن کاملEmergence of californium as the second transitional element in the actinide series
A break in periodicity occurs in the actinide series between plutonium and americium as the result of the localization of 5f electrons. The subsequent chemistry of later actinides is thought to closely parallel lanthanides in that bonding is expected to be ionic and complexation should not substantially alter the electronic structure of the metal ions. Here we demonstrate that ligation of calif...
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Let S be a reduced commutative cancellative atomic monoid. If s is a nonzero element of S, then we explore problems related to the computation of η(s), which represents the number of distinct irreducible factorizations of s ∈ S. In particular, if S is a saturated submonoid of Nd , then we provide an algorithm for computing the positive integer r(s) for which 0 < lim n→∞ η(sn) nr(s)−1 <∞. We fur...
متن کاملCHAPTER ELEVEN CALIFORNIUM Richard
The discovery of californium came in the era of the syntheses and identifications of other transplutonium elements, following the end of World War II. The discovery of the element californium, like many of the other actinide elements, hinged on the development of new experimental techniques in conjunction with predictions based on nuclear systematics. Californium was named after the University ...
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ژورنال
عنوان ژورنال: Physical Review
سال: 1950
ISSN: 0031-899X
DOI: 10.1103/physrev.80.790