D
D. A. Shaughnessy
Researcher at Lawrence Livermore National Laboratory
Publications - 108
Citations - 5706
D. A. Shaughnessy is an academic researcher from Lawrence Livermore National Laboratory. The author has contributed to research in topics: National Ignition Facility & Decay chain. The author has an hindex of 30, co-authored 103 publications receiving 5017 citations. Previous affiliations of D. A. Shaughnessy include Lawrence Berkeley National Laboratory.
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Journal ArticleDOI
Synthesis of the isotopes of elements 118 and 116 in the 249Cf and 245Cm+48Ca fusion reactions
Yu. Ts. Oganessian,V. K. Utyonkov,Yu. V. Lobanov,F. Sh. Abdullin,A. N. Polyakov,R. N. Sagaidak,I. V. Shirokovsky,Yu. S. Tsyganov,A. A. Voinov,G. G. Gulbekian,Sergey Bogomolov,Boris Gikal,A. N. Mezentsev,S. Iliev,V. G. Subbotin,A. M. Sukhov,K. Subotic,Valery Zagrebaev,Grigory K. Vostokin,M. G. Itkis,K. J. Moody,J. B. Patin,D. A. Shaughnessy,M. A. Stoyer,N. J. Stoyer,P. A. Wilk,J. M. Kenneally,J. H. Landrum,J. F. Wild,R. W. Lougheed +29 more
TL;DR: In this article, the decay properties of {sup 290}116 and {sup 291}116, and the dependence of their production cross sections on the excitation energies of the compound nucleus, {sup 293]116, have been measured in the {sup 245}Cm({sup 48}Ca,xn){sup 293-x}116 reaction.
Journal ArticleDOI
Synthesis of a new element with atomic number Z = 117.
Yu. Ts. Oganessian,F. Sh. Abdullin,P. D. Bailey,Dennis Benker,M. E. Bennett,S. N. Dmitriev,Julie G. Ezold,J. H. Hamilton,Roger 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,James B. Roberto,M. A. Ryabinin,K. P. Rykaczewski,R. N. Sagaidak,D. A. Shaughnessy,I. V. Shirokovsky,M. A. Stoyer,V. G. Subbotin,Ralf Sudowe,A. M. Sukhov,Yu. S. Tsyganov,V. K. Utyonkov,A. A. Voinov,Grigory K. Vostokin,P. A. Wilk +32 more
TL;DR: The measured decay properties show a strong rise of stability for heavier isotopes with Z > or = 111, validating the concept of the long sought island of enhanced stability for superheavy nuclei.
Journal ArticleDOI
Measurements of cross sections and decay properties of the isotopes of elements 112, 114, and 116 produced in the fusion reactions {sup 233,238}U, {sup 242}Pu, and {sup 248}Cm+{sup 48}Ca
Yu. Ts. Oganessian,V. K. Utyonkov,Yu. V. Lobanov,F. Sh. Abdullin,A. N. Polyakov,I. V. Shirokovsky,Yu. S. Tsyganov,G. G. Gulbekian,Sergey Bogomolov,Boris Gikal,A. N. Mezentsev,S. Iliev,V. G. Subbotin,A. M. Sukhov,A. A. Voinov,G. V. Buklanov,K. Subotic,Valery Zagrebaev,M. G. Itkis,J. B. Patin,K. J. Moody,J. F. Wild,M. A. Stoyer,N. J. Stoyer,D. A. Shaughnessy,J. M. Kenneally,P. A. Wilk,R. W. Lougheed,R. I. Il’kaev,S. P. Vesnovskii +29 more
TL;DR: In this paper, the authors studied the dependence of the production cross sections of the isotopes {sup 282,283}112 and {sup 286,287}114 on the excitation energy of the compound nuclei {sup 288,114, {sup 290,114] and {Sup 288}114] using the Dubna gas-filled recoil separator.
Journal ArticleDOI
Measurements of cross sections and decay properties of the isotopes of elements 112, 114, and 116 produced in the fusion reactions U-233,238, Pu-242 and Cm-248 + Ca-48
Yu. Ts. Oganessian,S. Iliev,I. V. Shirokovsky,M. G. Itkis,F. Sh. Abdullin,A. A. Voinov,J. M. Kenneally,A. N. Polyakov,V. K. Utyonkov,K. J. Moody,S. P. Vesnovskii,N. J. Stoyer,G. G. Gulbekian,A. N. Mezentsev,A. M. Sukhov,R. I. Il’kaev,D. A. Shaughnessy,Yu. V. Lobanov,J. F. Wild,V. G. Subbotin,R. W. Lougheed,G. V. Buklanov,K. Subotic,Sergey Bogomolov,Valery Zagrebaev,Boris Gikal,Stoyer,J. B. Patin,Yu. S. Tsyganov,P. A. Wilk +29 more
Journal ArticleDOI
Experiments on the synthesis of element 115 in the reaction 243 Am ( 48 Ca ,xn) 291-x 115
Yu. Ts. Oganessian,V. K. Utyonkoy,Yu. V. Lobanov,F. Sh. Abdullin,A. N. Polyakov,I. V. Shirokovsky,Yu. S. Tsyganov,G. G. Gulbekian,Sergey Bogomolov,A. N. Mezentsev,S. Iliev,V. G. Subbotin,A. M. Sukhov,A. A. Voinov,G. V. Buklanov,K. Subotic,Valery Zagrebaev,M. G. Itkis,J. B. Patin,K. J. Moody,J. F. Wild,M. A. Stoyer,N. J. Stoyer,D. A. Shaughnessy,J. M. Kenneally,R. W. Lougheed +25 more
TL;DR: The results of experiments designed to synthesize element 115 isotopes in the Am + 48 + √ √ 48 reaction were presented in this paper, where three similar decay chains consisting of five consecutive $\ensuremath{\alpha}$ decays, all detected in time intervals of about $20\phantom{\rule{0.3em}{0ex}}\mathrm{s}$ and terminated at a later time by a spontaneous fission with a high-energy release (total kinetic energy