8 Papers
3 Citations
J. Dvorak is an academic researcher from Lawrence Berkeley National Laboratory. The author has contributed to research in topics: Electron capture & Quasiparticle. The author has an hindex of 6, co-authored 8 publications.
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Papers
Independent Verification of Element 114 Production in the Ca 48 + Pu 242 Reaction
L. Stavsetra,Kenneth E. Gregorich,J. Dvorak,P. A. Ellison,P. A. Ellison,I. Dragojevic,I. Dragojevic,Mitch A. Garcia,Mitch A. Garcia,Heino Nitsche,Heino Nitsche +10 more
TL;DR: In this paper, independent verification of the production of element 114 in the reaction of 244-MeV with $242-mathrm{Pu}$ is presented, and two chains of time and position-correlated decays have been assigned to $^{286}114$ and $^{287}114$.
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High-K multi-quasiparticle states in 254No
R. M. Clark,Kenneth E. Gregorich,J. S. Berryman,Mazhar N. Ali,Mazhar N. Ali,J. M. Allmond,C. W. Beausang,M. Cromaz,M. A. Deleplanque,I. Dragojevic,I. Dragojevic,J. Dvorak,P. A. Ellison,P. A. Ellison,P. Fallon,Mitch A. Garcia,Mitch A. Garcia,J. M. Gates,J. M. Gates,S. Gros,H. B. Jeppesen,D. Kaji,I. Y. Lee,A. O. Macchiavelli,K. Morimoto,Heino Nitsche,Heino Nitsche,Stefanos Paschalis,Marina Petri,L. Stavsetra,F. S. Stephens,H. Watanabe,M. Wiedeking +32 more
TL;DR: In this paper, the decay of the high-K isomers of the trans-fermium region has been studied and the decay from the known high-lying four-quasiparticle isomer was established as a K π = 16 + state at an excitation energy of E x = 2.928 (3 ) MeV.
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High-K multi-quasiparticle states and rotational bands in 103 255 Lr
H. B. Jeppesen,R. M. Clark,Kenneth E. Gregorich,A. V. Afanasjev,Mazhar N. Ali,Mazhar N. Ali,J. M. Allmond,C. W. Beausang,M. Cromaz,M. A. Deleplanque,I. Dragojevic,I. Dragojevic,J. Dvorak,P. A. Ellison,P. A. Ellison,P. Fallon,Mitch A. Garcia,Mitch A. Garcia,J. M. Gates,J. M. Gates,S. Gros,I. Y. Lee,A. O. Macchiavelli,S. L. Nelson,S. L. Nelson,Heino Nitsche,Heino Nitsche,L. Stavsetra,F. S. Stephens,M. Wiedeking +29 more
TL;DR: In this paper, it was shown that the lowest observed sequence is built upon the Nilsson state and that the Hartree-Bogoliubov (CRHB) calculations do not reproduce the moment of inertia within typical accuracy.
New isotope Hs 263
I. Dragojevic,I. Dragojevic,Kenneth E. Gregorich,Ch. E. Düllmann,J. Dvorak,P. A. Ellison,P. A. Ellison,J. M. Gates,J. M. Gates,S. L. Nelson,S. L. Nelson,L. Stavsetra,Heino Nitsche,Heino Nitsche +13 more
TL;DR: A new isotope of Hs was produced in the reaction at the 88-Inch Cyclotron of the Lawrence Berkeley National Laboratory as mentioned in this paper, and the measured cross section was ${21}_{\ensuremath{-}8.8.
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Electromagnetic decays of excited states in Sg261 (Z=106) and Rf257 (Z=104)
J. S. Berryman,R. M. Clark,Kenneth E. Gregorich,J. M. Allmond,D. L. Bleuel,M. Cromaz,I. Dragojevic,I. Dragojevic,J. Dvorak,P. A. Ellison,P. A. Ellison,P. Fallon,Mitch A. Garcia,Mitch A. Garcia,S. Gros,I. Y. Lee,A. O. Macchiavelli,Heino Nitsche,Heino Nitsche,Stefanos Paschalis,Marina Petri,J. Qian,M. A. Stoyer,M. Wiedeking +23 more
TL;DR: An isomeric one-quasineutron state, likely based on the $[725]11/{2}^{\ensuremath{-}}$ Nilsson level, was identified in $261}\mathrm{Sg}$ by its decay via internal conversion electrons.
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