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Featured researches published by J. D. Leyba.


Journal of Radioanalytical and Nuclear Chemistry | 1992

Gas phase chromatography of halides of elements 104 and 105

A. Türler; H. W. Gäggeler; K. E. Gregorich; H. Barth; W. Brüchle; K. R. Czerwinski; M. K. Gober; N. J. Hannink; R.A. Henderson; Darleane C. Hoffman; D.T. Jost; C. D. Kacher; B. Kadkhodayan; J. Kovacs; Jens Volker Kratz; S. A. Kreek; D. M. Lee; J. D. Leyba; M. J. Nurmia; M. Schädel; U. W. Scherer; Schimpf; D. Vermeulen; Alfred P. Weber; H. P. Zimmermann; I. Zvara

On-line isothermal gas phase chromatography was used to study halides of261104 (T1/2=65 s) and262,263105 (T1/2=34 s and 27 s) produced an atom-at-a time via the reactions248Cm(18O, 5n) and249Bk(18O, 5n, 4n), respectively. Using HBr and HCl gas as halogenating agents, we were able to produce volatile bromides and chlorides of the above mentioned elements and study their behavior compared to their lighter homologs in Groups 4 or 5 of the periodic table. Element 104 formed more volatile bromide than its homolog Hf. In contrast, element 105 bromides were found to be less volatile than the bromides of the group 5 elements Nb and Ta. Both 104 and Hf chlorides were observed to be more volatile than their respective bromides.


Radiochimica Acta | 1988

AQUEOUS CHEMISTRY OF ELEMENT 105

Κ. E. Gregorich; R. A. Henderson; D. M. Lee; M. J. Nurmia; R. M. Chasteler; H.L. Hall; D. A. Bennett; C. M. Gannett; R. B. Chadwick; J. D. Leyba; Darleane C. Hoffman; G. Herrmann


Physical Review C | 1990

Spontaneous fission properties of 2. 9-s sup 256 No

Darleane C. Hoffman; D. M. Lee; K. E. Gregorich; M. J. Nurmia; R.B. Chadwick; K.B. Chen; K. R. Czerwinski; C.M. Gannett; H.L. Hall; R.A. Henderson; B. Kadkhodayan; S. A. Kreek; J. D. Leyba


Physical Review C | 1990

Electron-capture-delayed fission properties of 234Am.

H.L. Hall; K. E. Gregorich; R. A. Henderson; C. M. Gannett; R.B. Chadwick; J. D. Leyba; K. R. Czerwinski; B. Kadkhodayan; S. A. Kreek; D. M. Lee; M. J. Nurmia; Darleane C. Hoffman; Cynthia E. A. Palmer; P. A. Baisden


Physical Review C | 1992

Actinide production from the interactions of 40Ca and 44Ca with 248Cm and a comparison with the 48Ca+248Cm system.

A. Türler; von Gunten Hr; J. D. Leyba; Darleane C. Hoffman; D. M. Lee; K. E. Gregorich; D. A. Bennett; R.M. Chasteler; C. M. Gannett; H.L. Hall; R. A. Henderson; M. J. Nurmia


Physical Review C | 1992

Fission branch in 259Lr and confirmation of 258Lr and 259Lr mass assignments.

K. E. Gregorich; H.L. Hall; R. A. Henderson; J. D. Leyba; K. R. Czerwinski; S. A. Kreek; B. Kadkhodayan; M. J. Nurmia; D. M. Lee; Darleane C. Hoffman


Physical Review C | 1994

Electron-capture delayed fission properties of 228Np.

S. A. Kreek; H.L. Hall; K. E. Gregorich; R. A. Henderson; J. D. Leyba; K. R. Czerwinski; B. Kadkhodayan; Mary P. Neu; C. D. Kacher; T. M. Hamilton; M. Lane; E. R. Sylwester; A. Türler; D. M. Lee; M. J. Nurmia; Darleane C. Hoffman


Physical Review C | 1994

Electron-capture delayed fission properties of [sup 228]Np

H.L. Hall; K. E. Gregorich; R. A. Henderson; C. M. Gannett; R.B. Chadwick; J. D. Leyba; K. R. Czerwinski; B. Kadkhodayan; S. A. Kreek; D. M. Lee; M. J. Nurmia; Darleane C. Hoffman; Cynthia E. A. Palmer; P. A. Baisden


Radiochimica Acta | 1992

Identification of 253Md

B. Kadkhodayan; R. A. Henderson; H.L. Hall; J. D. Leyba; K. R. Czerwinski; S. A. Kreek; N. J. Hannink; K. E. Gregorich; D. M. Lee; M. J. Nurmia; Darleane C. Hoffman


Physical Review C | 1990

Electron-capture-delayed fission properties of 232Am.

H.L. Hall; K. E. Gregorich; R.A. Henderson; C.M. Gannett; R.B. Chadwick; J. D. Leyba; K. R. Czerwinski; B. Kadkhodayan; S. A. Kreek; N. J. Hannink; D. M. Lee; M. J. Nurmia; Darleane C. Hoffman; Cynthia E. A. Palmer; P. A. Baisden

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H.L. Hall

Lawrence Berkeley National Laboratory

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D. M. Lee

University of California

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Darleane C. Hoffman

Lawrence Berkeley National Laboratory

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M. J. Nurmia

University of California

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B. Kadkhodayan

University of California

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S. A. Kreek

University of California

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R. A. Henderson

Lawrence Berkeley National Laboratory

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R.A. Henderson

University of California

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