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1. Cross Section Limits for the $^{208}$Pb($^{86}$Kr,n)$^{293}$118 Reaction

Author

Gregorich, K. E., Ginter, T. N., Loveland, W., Peterson, D., Patin, J. B., Folden III, C. M., Hoffman, D. C., Lee, D. M., Nitsche, H., Omtvedt, J. P., Omtvedt, L. A., Stavsetra, L., Sudowe, R., Wilk, P. A., Zielinski, P. M., and Aleklett, K.

Subjects
Nuclear Experiment
Abstract

In April-May, 2001, the previously reported experiment to synthesize element 118 using the $^{208}$Pb($^{86}$Kr,n)$^{293}$118 reaction was repeated. No events corresponding to the synthesis of element 118 were observed with a total beam dose of 2.6 x 10$^{18}$ ions. The simple upper limit cross sections (1 event) were 0.9 and 0.6 pb for evaporation residue magnetic rigidities of 2.00 $T m$ and 2.12 $T m$, respectively. A more detailed cross section calculation, accounting for an assumed narrow excitation function, the energy loss of the beam in traversing the target and the uncertainty in the magnetic rigidity of the Z=118 recoils is also presented. Re-analysis of the primary data files from the 1999 experiment showed the reported element 118 events are not in the original data. The current results put constraints on the production cross section for synthesis of very heavy nuclei in cold fusion reactions., Comment: 7 pages, 2 figures. Submitted to EPJA

Published
2002
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2. Search for the Production of Element 112 in the 48Ca + 238U Reaction

Author

Loveland, W., Gregorich, K. E., Patin, J. B., Peterson, D., Rouki, C., Zielinski, P. M., and Aleklett, K.

Subjects
Nuclear Experiment
Abstract

We have searched for the production of element 112 in the reaction of 231 MeV 48Ca with 238U. We have not observed any events with a "one event" upper limit cross section of 1.6 pb for EVR-fission events and 1.8 pb for EVR-alpha events., Comment: 6 pages, 3 figures, submitted to Phys. Rev. C

Published
2002
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3. Non-Observation of the Production of Superheavy Nuclei in the Reaction of $^{86]$Kr with $^{208}$Pb

Author

Gregorich, K. E., Loveland, W., Ghiorso, A., Hoffman, D. C., Lee, D. M., Nitsche, H., Swiatecki, W. J., Kirbach, U. W., Laue, C. A., Adams, J. L., Patin, J. B., Shaughnessy, D. A., Strellis, D. A., and Wilk, P. A.

Subjects
Nuclear Experiment
Abstract

The published claim for the discovery of element 118 is retracted., Comment: 1 page, paper accepted for publication in PRL, will not be published

Published
2002

4. New elements from Dubna

Author

Oganessian, Yu. Ts., Utyonkov, V. K., Lobanov, Yu. V., Abdullin, F. Sh., Polyakov, A. N., Shirokovsky, I. V., Tsyganov, Yu. S., Gulbekian, G. G., Bogomolov, S. L., Gikal, B. N., Mezentsev, A. N., Iliev, S., Subbotin, V. G., Sukhov, A. M., Voinov, A. A., Buklanov, G. V., Subotic, K., Zagrebaev, V. I., Itkis, M. G., Patin, J. B., Moody, K. J., Wild, J. F., Stoyer, M. A., Stoyer, N. J., Shaughnessy, D. A., Kenneally, J. M., Wilk, P. A., Lougheed, R. W., Gross, Carl J., editor, Nazarewicz, Witold, editor, and Rykaczewski, Krzysztof P., editor

Published
2005
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5. Superheavy Elements — Status of Research in Dubna

Author

Oganessian, Yu. Ts., Utyonkov, V. K., Lobanov, Yu. V., Abdullin, F. Sh., Polyakov, A. N., Shirokovsky, I. V., Tsyganov, Yu. S., Gulbekian, G. G., Bogomolov, S. L., Gikal, B. N., Mezentsev, A. N., Iliev, S., Subbotin, V. G., Sukhov, A. M., Voinov, A. A., Buklanov, G. V., Subotic, K., Itkis, M. G., Moody, K. J., Wild, J. F., Stoyer, N. J., Stoyer, M. A., Lougheed, R. W., Laue, C. A., Patin, J. B., Shaughnessy, D. A., Kenneally, J. M., and Klapdor-Kleingrothaus, Hans Volker, editor

Published
2004
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6. Random probability analysis of recent 48Ca experiments

Author

Stoyer, M. A., Patin, J. B., Kenneally, J. M., Moody, K. J., Shaughnessy, D. A., Stoyer, N. J., Wild, J. F., Wilk, P. A., Utyonkov, V. K., Oganessian, Yu. Ts., Gross, Carl J., editor, Nazarewicz, Witold, editor, and Rykaczewski, Krzysztof P., editor

Published
2005
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8. First chemical investigation of hassium (Hs, Z=108)

Author

Düllmann, Ch. E., Dressler, R., Eichler, B., Gäggeler, H. W., Glaus, F., Jost, D. T., Piguet, D., Soverna, S., Türler, A., Brüchle, W., Eichler, R., Jäger, E., Pershina, V., Schädel, M., Schausten, B., Schimpf, E., Schött, H. -J., Wirth, G., Eberhardt, K., Thörle, P., Trautmann, N., Ginter, T. N., Gregorich, K. E., Hoffman, D. C., Kirbach, U. W., Lee, D. M., Nitsche, H., Patin, J. B., Sudowe, R., Zielinski, P. M., Timokhin, S. N., Yakushev, A. B., Vahle, A., and Qin, Z.

Published
2003
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9. Chemical investigation of hassium (element 108)

Author

Dullmann, Ch. E., Bruchle, W., Dressler, R., Eberhardt, K., Eichler, B., Eichler, R., Gaggeler, H. W., Ginter, T. N., Glaus, F., Gregorich, K. E., Hoffman, D. C., Jager, E., Jost, D. T., Kirbach, U. W., Lee, D. M., Nitsche, H., Patin, J. B., Pershina, V., Piguet, D., Qin, Z., Schadel, M., Schausten, B., Schimpf, E., Schott, H.-J., Soverna, S., Sudowe, R., Thorle, P., Timokhin, S. N., Trautmann, N., Turler, A., Vahle, A., Wirth, G., Yakushev, A. B., and Zielinski, P. M.

Subjects
Environmental issues, Science and technology, Zoology and wildlife conservation
Abstract

Author(s): Ch. E. Düllmann [1, 2]; W. Brüchle [3]; R. Dressler [2]; K. Eberhardt [4]; B. Eichler [2]; R. Eichler [2]; H. W. Gäggeler (corresponding author) [1, 2]; T. N. [...]

Published
2002
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10. Superheavy Elements — Status of Research in Dubna

Author

Oganessian, Yu. Ts., primary, Utyonkov, V. K., additional, Lobanov, Yu. V., additional, Abdullin, F. Sh., additional, Polyakov, A. N., additional, Shirokovsky, I. V., additional, Tsyganov, Yu. S., additional, Gulbekian, G. G., additional, Bogomolov, S. L., additional, Gikal, B. N., additional, Mezentsev, A. N., additional, Iliev, S., additional, Subbotin, V. G., additional, Sukhov, A. M., additional, Voinov, A. A., additional, Buklanov, G. V., additional, Subotic, K., additional, Itkis, M. G., additional, Moody, K. J., additional, Wild, J. F., additional, Stoyer, N. J., additional, Stoyer, M. A., additional, Lougheed, R. W., additional, Laue, C. A., additional, Patin, J. B., additional, Shaughnessy, D. A., additional, and Kenneally, J. M., additional

Published
2004
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11. Chemical characterization of bohrium (element 107)

Author

Eichler, R., Brüchle, W., Dressler, R., Düllmann, Ch. E., Eichler, B., Gäggeler, H. W., Gregorich, K. E., Hoffman, D. C., Hübener, S., Jost, D. T., Kirbach, U. W., Laue, C. A., Lavanchy, V. M., Nitsche, H., Patin, J. B., Piguet, D., Schädel, M., Shaughnessy, D. A., Strellis, D. A., Taut, S., Tobler, L., Tsyganov, Y. S., Türler, A., Vahle, A., Wilk, P. A., and Yakushev, A. B.

Published
2000

12. Results from the First {sup 249}Cf + {sup 48}Ca Experiment

Author

Oganessian, Y T, primary, Utyonkov, V K, additional, Lobanov, Y V, additional, Abdullin, F S, additional, Polyakov, A N, additional, Shirokovsky, I V, additional, Tsyganov, Y S, additional, Mezentsev, A N, additional, Iliev, S, additional, Subbotin, V G, additional, Sukhov, A M, additional, Ivanov, O V, additional, Voinov, A A, additional, Subotic, K, additional, Zagrebaev, V I, additional, Itkis, M G, additional, Moody, K J, additional, Wild, J F, additional, Stoyer, M A, additional, Stoyer, N J, additional, Laue, C A, additional, Shaughnessy, D A, additional, Patin, J B, additional, and Lougheed, R W, additional

Published
2003
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13. New elements from Dubna

Author

Oganessian, Yu. Ts., primary, Utyonkov, V. K., additional, Lobanov, Yu. V., additional, Abdullin, F. Sh., additional, Polyakov, A. N., additional, Shirokovsky, I. V., additional, Tsyganov, Yu. S., additional, Gulbekian, G. G., additional, Bogomolov, S. L., additional, Gikal, B. N., additional, Mezentsev, A. N., additional, Iliev, S., additional, Subbotin, V. G., additional, Sukhov, A. M., additional, Voinov, A. A., additional, Buklanov, G. V., additional, Subotic, K., additional, Zagrebaev, V. I., additional, Itkis, M. G., additional, Patin, J. B., additional, Moody, K. J., additional, Wild, J. F., additional, Stoyer, M. A., additional, Stoyer, N. J., additional, Shaughnessy, D. A., additional, Kenneally, J. M., additional, Wilk, P. A., additional, and Lougheed, R. W., additional

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14. Random probability analysis of recent 48Ca experiments

Author

Stoyer, M. A., primary, Patin, J. B., additional, Kenneally, J. M., additional, Moody, K. J., additional, Shaughnessy, D. A., additional, Stoyer, N. J., additional, Wild, J. F., additional, Wilk, P. A., additional, Utyonkov, V. K., additional, and Oganessian, Yu. Ts., additional

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15. Confirmation of production of element 110 by the 208 Pb ( 64 Ni , n ) reaction

Author

Ginter, T. N., Gregorich, K. E., Loveland, W., Lee, D. M., Kirbach, U. W., Sudowe, R., Folden, C. M., Patin, J. B., Seward, N., Wilk, P. A., Zielinski, P. M., Aleklett, K., Eichler, R., Nitsche, H., and Hoffman, D. C.

Abstract

We report the experimental confirmation of the production of element 110. In the bombardment of a 208Pb target with a 309-MeV 64Ni beam, we have observed two chains of time- and position-correlated events. Each chain consisted of the implantation of an evaporation residue followed by the emission of α particles. We attribute these two chains to the decay of 271110 produced with a cross section of 8.3−5.3+11pb.

Published
2003

16. Berkeley Off-line Radioisotope Generator (BORG)

Author

Sudowe, R and Patin, J B

Subjects
Nuclear Physics
Abstract

Development of chemical separations for the transactinides has traditionally been performed with longer-lived tracer activities purchased commercially. With these long-lived tracers, there is always the potential problem that the tracer atoms are not always in the same chemical form as the short-lived atoms produced in on-line experiments. This problem is especially severe for elements in groups 4 and 5 of the periodic table, where hydrolysis is present. The long-lived tracers usually are stored with a complexing agent to prevent sorption or precipitation. Chemistry experiments performed with these long-lived tracers are therefore not analogous to those chemical experiments performed in on-line experiments. One way to eliminate the differences between off-line and on-line chemistry experiments is through the use of a sup 2 sup 5 sup 2 Cf fission fragment collection device. A sup 2 sup 5 sup 2 Cf fission fragment collection device has already been constructed [1]. This device is limited in its capabilities. A new fission fragment device would allow the study of the chemical properties of the homologues of the heaviest elements. This new device would be capable of producing fission fragments for fast gas chemistry and aqueous chemistry experiments, long-lived tracers for model system development and neutrons for neutron activation. Fission fragment activities produced in this way should have the same chemical form as those produced in Cyclotron irradiations. The simple operation of this source will allow more rapid and reliable development of radiochemical separations with homologues of transactinide elements.

Published
2001

17. Evidence for New Isotopes of Element 107: B 266 h and B 267 h

Author

Wilk, P. A., Gregorich, K. E., Türler, A., Laue, C. A., Eichler, R., Ninov, V., Adams, J. L., Kirbach, U. W., Lane, M. R., Lee, D. M., Patin, J. B., Shaughnessy, D. A., Strellis, D. A., Nitsche, H., and Hoffman, D. C.

Abstract

New neutron rich isotopes 107267Bh and 107266Bh were produced in bombardments of a 249Bk target with 117-MeV and 123-MeV 22Ne ions at the Lawrence Berkeley National Laboratory 88-Inch Cyclotron. Identification was made by observation of correlated α-particle decays between the Bh isotopes and their Db and Lr daughters using a rotating wheel system. 267Bh was produced with a cross section of ≈70 pb and decays with a 17−6+14 s half life by emission of α particles with an average energy of 8.83±0.03 MeV. One atom of 266Bh was observed, decaying within 1 s by emission of a 9.29-MeV α particle.

Published
2000

18. Observation of Superheavy Nuclei Produced in the Reaction of K 86 r with P 208 b

Author

Ninov, V., Gregorich, K. E., Loveland, W., Ghiorso, A., Hoffman, D. C., Lee, D. M., Nitsche, H., Swiatecki, W. J., Kirbach, U. W., Laue, C. A., Adams, J. L., Patin, J. B., Shaughnessy, D. A., Strellis, D. A., and Wilk, P. A.

Abstract

Following a prediction by Smolańczuk [Phys. Rev. C 59, 2634 (1999)], we searched for superheavy element formation in the bombardment of 208Pb with 449-MeV 86Kr ions. We have observed three decay chains, each consisting of an implanted heavy atom and six subsequent α decays, correlated in time and position. In these decay chains, a rapid (ms) sequence of high energy α particles ( Eα≥10MeV) indicates the decay of a new high- Z element. The observed chains are consistent with the formation of 129318 and its decay by sequential α-particle emission to 128916, 128514, 128112, 127710, 273Hs ( Z=108) and 269Sg ( Z=106). The production cross section is 2.2−0.8+2.6pb.

Published
1999

19. SYNTHESIS OF SUPERHEAVY NUCLEI IN 48CA-INDUCED REACTIONS

Author

TS. OGANESSIAN, YU., primary, UTYONKOV, V. K., additional, LOBANOV, YU. V., additional, SH. ABDULLIN, F., additional, POLYAKOV, A. N., additional, SAGAIDAK, R. N., additional, SHIROKOVSKY, I. V., additional, TSYGANOV, YU. S., additional, VOINOV, A. A., additional, GULBEKIAN, G. G., additional, BOGOMOLOV, S. L., additional, GIKAL, B. N., additional, MEZENTSEV, A. N., additional, ILIEV, S., additional, SUBBOTIN, V. G., additional, SUKHOV, A. M., additional, SUBOTIC, K., additional, ZAGREBAEV, V. I., additional, VOSTOKIN, G. K., additional, ITKIS, M. G., additional, MOODY, K. J., additional, PATIN, J. B., additional, SHAUGHNESSY, D. A., additional, STOYER, M. A., additional, STOYER, N. J., additional, WILK, P. A., additional, KENNEALLY, J. M., additional, LANDRUM, J. H., additional, WILD, J. F., additional, and LOUGHEED, R. W., additional

Published
2008
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20. SYNTHESIS, DECAY PROPERTIES, AND IDENTIFICATION OF SUPERHEAVY NUCLEI PRODUCED IN 48CA-INDUCED REACTIONS

Author

TS. OGANESSIAN, YU., primary, UTYONKOV, V. K., additional, LOBANOV, YU. V., additional, SH. ABDULLIN, F., additional, POLYAKOV, A. N., additional, SAGAIDAK, R. N., additional, SHIROKOVSKY, I. V., additional, TSYGANOV, YU. S., additional, VOINOV, A. A., additional, ILIEV, S., additional, SUBBOTIN, V. G., additional, SUKHOV, A. M., additional, GULBEKIAN, G. G., additional, BOGOMOLOV, S. L., additional, GIKAL, B. N., additional, MEZENTSEV, A. N., additional, SUBOTIC, K., additional, ZAGREBAEV, V. I., additional, ITKIS, M. G., additional, MOODY, K. J., additional, HENDERSON, R. A., additional, PATIN, J. B., additional, SHAUGHNESSY, D. A., additional, STOYER, M. A., additional, STOYER, N. J., additional, WILK, P. A., additional, KENNEALLY, J. M., additional, LANDRUM, J. H., additional, WILD, J. F., additional, and LOUGHEED, R. W., additional

Published
2008
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21. Synthesis, Decay Properties, and Identification of Superheavy Nuclei Produced in [sup 48]Ca-induced Reactions

Author

Oganessian, Yu. Ts., primary, Utyonkov, V. K., additional, Lobanov, Yu. V., additional, Abdullin, F. Sh., additional, Polyakov, A. N., additional, Sagaidak, R. N., additional, Shirokovsky, I. V., additional, Tsyganov, Yu. S., additional, Voinov, A. A., additional, Iliev, S., additional, Subbotin, V. G., additional, Sukhov, A. M., additional, Gulbekian, G. G., additional, Bogomolov, S. L., additional, Gikal, B. N., additional, Mezentsev, A. N., additional, Subotic, K., additional, Zagrebaev, V. I., additional, Itkis, M. G., additional, Moody, K. J., additional, Henderson, R. A., additional, Patin, J. B., additional, Shaughnessy, D. A., additional, Stoyer, M. A., additional, Stoyer, N. J., additional, Wilk, P. A., additional, Kenneally, J. M., additional, Landrum, J. H., additional, Wild, J. F., additional, Lougheed, R. W., additional, Alarcon, Ricardo, additional, Cole, Philip L., additional, Djalali, Chaden, additional, and Umeres, Fernando, additional

Published
2007
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22. Synthesis of the isotopes of elements 118 and 116 in theCf249andCm245+Ca48fusion reactions

Author

Oganessian, Yu. Ts., primary, Utyonkov, V. K., additional, Lobanov, Yu. V., additional, Abdullin, F. Sh., additional, Polyakov, A. N., additional, Sagaidak, R. N., additional, Shirokovsky, I. V., additional, Tsyganov, Yu. S., additional, Voinov, A. A., additional, Gulbekian, G. G., additional, Bogomolov, S. L., additional, Gikal, B. N., additional, Mezentsev, A. N., additional, Iliev, S., additional, Subbotin, V. G., additional, Sukhov, A. M., additional, Subotic, K., additional, Zagrebaev, V. I., additional, Vostokin, G. K., additional, Itkis, M. G., additional, Moody, K. J., additional, Patin, J. B., additional, Shaughnessy, D. A., additional, Stoyer, M. A., additional, Stoyer, N. J., additional, Wilk, P. A., additional, Kenneally, J. M., additional, Landrum, J. H., additional, Wild, J. F., additional, and Lougheed, R. W., additional

Published
2006
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23. Synthesis of elements 115 and 113 in the reactionAm243+Ca48

Author

Oganessian, Yu. Ts., primary, Utyonkov, V. K., additional, Dmitriev, S. N., additional, Lobanov, Yu. V., additional, Itkis, M. G., additional, Polyakov, A. N., additional, Tsyganov, Yu. S., additional, Mezentsev, A. N., additional, Yeremin, A. V., additional, Voinov, A. A., additional, Sokol, E. A., additional, Gulbekian, G. G., additional, Bogomolov, S. L., additional, Iliev, S., additional, Subbotin, V. G., additional, Sukhov, A. M., additional, Buklanov, G. V., additional, Shishkin, S. V., additional, Chepygin, V. I., additional, Vostokin, G. K., additional, Aksenov, N. V., additional, Hussonnois, M., additional, Subotic, K., additional, Zagrebaev, V. I., additional, Moody, K. J., additional, Patin, J. B., additional, Wild, J. F., additional, Stoyer, M. A., additional, Stoyer, N. J., additional, Shaughnessy, D. A., additional, Kenneally, J. M., additional, Wilk, P. A., additional, Lougheed, R. W., additional, Gäggeler, H. W., additional, Schumann, D., additional, Bruchertseifer, H., additional, and Eichler, R., additional

Published
2005
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24. New elements from Dubna

Author

Oganessian, Yu. Ts., primary, Utyonkov, V. K., additional, Lobanov, Yu. V., additional, Abdullin, F. Sh., additional, Polyakov, A. N., additional, Shirokovsky, I. V., additional, Tsyganov, Yu. S., additional, Gulbekian, G. G., additional, Bogomolov, S. L., additional, Gikal, B. N., additional, Mezentsev, A. N., additional, Iliev, S., additional, Subbotin, V. G., additional, Sukhov, A. M., additional, Voinov, A. A., additional, Buklanov, G. V., additional, Subotic, K., additional, Zagrebaev, V. I., additional, Itkis, M. G., additional, Patin, J. B., additional, Moody, K. J., additional, Wild, J. F., additional, Stoyer, M. A., additional, Stoyer, N. J., additional, Shaughnessy, D. A., additional, Kenneally, J. M., additional, Wilk, P. A., additional, and Lougheed, R. W., additional

Published
2005
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25. Random probability analysis of recent 48Ca experiments

Author

Stoyer, M. A., primary, Patin, J. B., additional, Kenneally, J. M., additional, Moody, K. J., additional, Shaughnessy, D. A., additional, Stoyer, N. J., additional, Wild, J. F., additional, Wilk, P. A., additional, Utyonkov, V. K., additional, and Oganessian, Yu. Ts., additional

Published
2005
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26. Publisher's Note: Measurements of cross sections and decay properties of the isotopes of elements 112, 114, and 116 produced in the fusion reactionsU233,238,Pu242, andCm248+Ca48[Phys. Rev. C 70, 064609 (2004)]

Author

Oganessian, Yu. Ts., primary, Utyonkov, V. K., additional, Lobanov, Yu. V., additional, Abdullin, F. Sh., additional, Polyakov, A. N., additional, Shirokovsky, I. V., additional, Tsyganov, Yu. S., additional, Gulbekian, G. G., additional, Bogomolov, S. L., additional, Gikal, B. N., additional, Mezentsev, A. N., additional, Iliev, S., additional, Subbotin, V. G., additional, Sukhov, A. M., additional, Voinov, A. A., additional, Buklanov, G. V., additional, Subotic, K., additional, Zagrebaev, V. I., additional, Itkis, M. G., additional, Patin, J. B., additional, Moody, K. J., additional, Wild, J. F., additional, Stoyer, M. A., additional, Stoyer, N. J., additional, Shaughnessy, D. A., additional, Kenneally, J. M., additional, Wilk, P. A., additional, Lougheed, R. W., additional, Il'kaev, R. I., additional, and Vesnovskii, S. P., additional

Published
2005
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27. Measurements of cross sections and decay properties of the isotopes of elements 112, 114, and 116 produced in the fusion reactionsU233,238,Pu242, andCm248+Ca48

Author

Oganessian, Yu. Ts., primary, Utyonkov, V. K., additional, Lobanov, Yu. V., additional, Abdullin, F. Sh., additional, Polyakov, A. N., additional, Shirokovsky, I. V., additional, Tsyganov, Yu. S., additional, Gulbekian, G. G., additional, Bogomolov, S. L., additional, Gikal, B. N., additional, Mezentsev, A. N., additional, Iliev, S., additional, Subbotin, V. G., additional, Sukhov, A. M., additional, Voinov, A. A., additional, Buklanov, G. V., additional, Subotic, K., additional, Zagrebaev, V. I., additional, Itkis, M. G., additional, Patin, J. B., additional, Moody, K. J., additional, Wild, J. F., additional, Stoyer, M. A., additional, Stoyer, N. J., additional, Shaughnessy, D. A., additional, Kenneally, J. M., additional, Wilk, P. A., additional, Lougheed, R. W., additional, Il’kaev, R. I., additional, and Vesnovskii, S. P., additional

Published
2004
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28. Measurements of cross sections for the fusion-evaporation reactionsPu244(Ca48,xn)292−x114andCm245(Ca48,xn)293−x116

Author

Oganessian, Yu. Ts., primary, Utyonkov, V. K., additional, Lobanov, Yu. V., additional, Abdullin, F. Sh., additional, Polyakov, A. N., additional, Shirokovsky, I. V., additional, Tsyganov, Yu. S., additional, Gulbekian, G. G., additional, Bogomolov, S. L., additional, Gikal, B. N., additional, Mezentsev, A. N., additional, Iliev, S., additional, Subbotin, V. G., additional, Sukhov, A. M., additional, Voinov, A. A., additional, Buklanov, G. V., additional, Subotic, K., additional, Zagrebaev, V. I., additional, Itkis, M. G., additional, Patin, J. B., additional, Moody, K. J., additional, Wild, J. F., additional, Stoyer, M. A., additional, Stoyer, N. J., additional, Shaughnessy, D. A., additional, Kenneally, J. M., additional, and Lougheed, R. W., additional

Published
2004
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29. Publisher’s Note: Experiments on the synthesis of element 115 in the reactionAm243(Ca48,xn)115291−x[Phys. Rev. C69, 021601(R) (2004)]

Author

Oganessian, Yu. Ts., primary, Utyonkov, V. K., additional, Lobanov, Yu. V., additional, Abdullin, F. Sh., additional, Polyakov, A. N., additional, Shirokovsky, I. V., additional, Tsyganov, Yu. S., additional, Gulbekian, G. G., additional, Bogomolov, S. L., additional, Mezentsev, A. N., additional, Iliev, S., additional, Subbotin, V. G., additional, Sukhov, A. M., additional, Voinov, A. A., additional, Buklanov, G. V., additional, Subotic, K., additional, Zagrebaev, V. I., additional, Itkis, M. G., additional, Patin, J. B., additional, Moody, K. J., additional, Wild, J. F., additional, Stoyer, M. A., additional, Stoyer, N. J., additional, Shaughnessy, D. A., additional, Kenneally, J. M., additional, and Lougheed, R. W., additional

Published
2004
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30. Experiments on the synthesis of element 115 in the reactionAm243(Ca48,xn)115291−x

Author

Oganessian, Yu. Ts., primary, Utyonkoy, V. K., additional, Lobanov, Yu. V., additional, Abdullin, F. Sh., additional, Polyakov, A. N., additional, Shirokovsky, I. V., additional, Tsyganov, Yu. S., additional, Gulbekian, G. G., additional, Bogomolov, S. L., additional, Mezentsev, A. N., additional, Iliev, S., additional, Subbotin, V. G., additional, Sukhov, A. M., additional, Voinov, A. A., additional, Buklanov, G. V., additional, Subotic, K., additional, Zagrebaev, V. I., additional, Itkis, M. G., additional, Patin, J. B., additional, Moody, K. J., additional, Wild, J. F., additional, Stoyer, M. A., additional, Stoyer, N. J., additional, Shaughnessy, D. A., additional, Kenneally, J. M., additional, and Lougheed, R. W., additional

Published
2004
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31. Synthesis of Superheavy Nuclei in48Ca-Induced Reactions

Author

Oganessian, Yu. Ts., primary, Utyonkov, V. K., additional, Lobanov, Yu. V., additional, Abdullin, F. Sh., additional, Polyakov, A. N., additional, Shirokovsky, I. V., additional, Tsyganov, Yu. S., additional, Gulbekian, G. G., additional, Bogomolov, S. L., additional, Gikal, B. N., additional, Mezentsev, A. N., additional, Iliev, S., additional, Subbotin, V. G., additional, Sukhov, A. M., additional, Voinov, A. A., additional, Buklanov, G. V., additional, Subotic, K., additional, Zagrebaev, V. I., additional, Itkis, M. G., additional, Moody, K. J., additional, Wild, J. F., additional, Stoyer, M. A., additional, Stoyer, N. J., additional, Shaughnessy, D. A., additional, Kenneally, J. M., additional, Patin, J. B., additional, and Lougheed, R. W., additional

Published
2004
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33. GAMMA SPECTROSCOPY OF 235U AND 234mPa

Author

PATIN, J. B., primary, STOYER, M. A., additional, MOODY, K. J., additional, SHAUGHNESSY, D. A., additional, STOYER, N. J., additional, WILD, J. F., additional, WOODDY, P.T., additional, and GUTMAN, E., additional

Published
2003
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34. Publisher’s Note: Confirmation of production of element 110 by the208Pb(64Ni,n)reaction [Phys. Rev. C67, 064609 (2003)]

Author

Ginter, T. N., primary, Gregorich, K. E., additional, Loveland, W., additional, Lee, D. M., additional, Kirbach, U. W., additional, Sudowe, R., additional, Folden, C. M., additional, Patin, J. B., additional, Seward, N., additional, Wilk, P. A., additional, Zielinski, P. M., additional, Aleklett, K., additional, Eichler, R., additional, Nitsche, H., additional, and Hoffman, D. C., additional

Published
2003
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35. Confirmation of production of element 110 by the208Pb(64Ni,n)reaction

Author

Ginter, T. N., primary, Gregorich, K. E., additional, Loveland, W., additional, Lee, D. M., additional, Kirbach, U. W., additional, Sudowe, R., additional, Folden, C. M., additional, Patin, J. B., additional, Seward, N., additional, Wilk, P. A., additional, Zielinski, P. M., additional, Aleklett, K., additional, Eichler, R., additional, Nitsche, H., additional, and Hoffman, D. C., additional

Published
2003
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37. Editorial Note: Observation of Superheavy Nuclei Produced in the Reaction ofK86rwithP208b[Phys. Rev. Lett. 83, 1104 (1999)]

Author

Ninov, V., primary, Gregorich, K. E., additional, Loveland, W., additional, Ghiorso, A., additional, Hoffman, D. C., additional, Lee, D. M., additional, Nitsche, H., additional, Swiatecki, W. J., additional, Kirbach, U. W., additional, Laue, C. A., additional, Adams, J. L., additional, Patin, J. B., additional, Shaughnessy, D. A., additional, Strellis, D. A., additional, and Wilk, P. A., additional

Published
2002
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38. Electron-capture delayed fission properties of244Es

Author

Shaughnessy, D. A., primary, Gregorich, K. E., additional, Adams, J. L., additional, Lane, M. R., additional, Laue, C. A., additional, Lee, D. M., additional, McGrath, C. A., additional, Ninov, V., additional, Patin, J. B., additional, Strellis, D. A., additional, Sylwester, E. R., additional, Wilk, P. A., additional, and Hoffman, D. C., additional

Published
2002
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39. SISAK Liquid-Liquid Extraction Experiments with Preseparated 257Rf

Author

Omtvedt, Jon Petter, primary, Alstad, J., additional, Breivik, H., additional, Dyve, J. E., additional, Eberhardt, K., additional, FoldenIII, C. M., additional, Ginter, T., additional, Gregorich, K. E., additional, Hult, E. A., additional, Johansson, M., additional, Kirbach, U. W., additional, Lee, D. M., additional, Mendel, M., additional, N^|^auml;hler, A., additional, Ninov, V., additional, Omtvedt, L. A., additional, Patin, J. B., additional, Skarnemark, G., additional, Stavsetra, L., additional, Sudowe, R., additional, Wiehl, N., additional, Wierczinski, B., additional, Wilk, P. A., additional, Zielinski, P. M., additional, Kratz, J. V., additional, Trautmann, N., additional, Nitsche, H., additional, and Hoffman, D. C., additional

Published
2002
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40. A PLUTONIUM CERAMIC TARGET FOR MASHA.

Author

WILK, P. A., SHAUGHNESSY, D. A., MOODY, K. J., KENNEALLY, J. M., WILD, J. F., STOYER, M. A., PATIN, J. B., LOUGHEED, R. W., EBBINGHAUS, B. B., LANDINGHAM, R. L., OGANESSIAN, YU. TS., YEREMIN, A. V., and DMITRIEV, S. N.

Subjects
PLUTONIUM, NANOSTRUCTURED materials, PHASE transitions, NUCLEAR reactions, MASS spectrometry
Published
2005

41. SYNTHESIS AND DECAY PROPERTIES OF SUPERHEAVY NUCLEI.

Author

OGANESSIAN, YU. TS., UTYONKOV, V. K., LOBANOV, W. V., ABDULLIN, F. SH., POLYAKOV, A. N., SHIROKOVSKY, I. V., TSYGANOV, YU. S., GULBEKIAN, G. G., BOGOMOLOV, S. L., GIKAL, B. N., MEZENTSEV, A. N., ILIEV, S., SUBBOTIN, V. G., SUKHOV, A. M., VOINOV, A. A., BUKLANOV, G. V., SUBOTIC, K., ZAGREBAEV, V. I., ITKIS, M. G., and PATIN, J. B.

Subjects
NUCLEAR reactions, HEAVY nuclei, RADIOACTIVE substances, ISOTOPES, NEUTRONS
Published
2005

42. PRODUCTION OF ELEMENT 110 IN THE 208Pb(64Ni,n) REACTION.

Author

GINTER, T. N., GREGORICH, K. E., LOVELAND, W., LEE, D. M., KIRBACH, U. W., SUDOWE, R., FOLDEN III, C. M., PATIN, J. B., SEWARD, N., WILK, P. A., ZIELINSKI, P. M., ALEKLETT, K., EICHLER, R., NITSCHE, H., and HOFFMAN, D. C.

Subjects
ISOTOPES, NUCLEAR physics, BETA decay, NUCLEAR energy, DETECTORS
Published
2003

45. GAMMA SPECTROSCOPY OF 335U AND 234mPa.

Author

PATIN, J. B., STOYER, M. A., MOODY, K. J., SHAUGHNESSY, D. A., STOYER, N. J., WILD, J. F., WOODDY, P. T., and GUTMAN, E.

Subjects
GAMMA ray spectroscopy, NUCLEAR structure, RADIOACTIVE decay, GERMANIUM, NUCLEAR physics
Published
2003

46. Evidence for New Isotopes of Element 107:B266handB267h

Author

Wilk, P. A., primary, Gregorich, K. E., additional, Türler, A., additional, Laue, C. A., additional, Eichler, R., additional, Ninov, V., additional, Adams, J. L., additional, Kirbach, U. W., additional, Lane, M. R., additional, Lee, D. M., additional, Patin, J. B., additional, Shaughnessy, D. A., additional, Strellis, D. A., additional, Nitsche, H., additional, and Hoffman, D. C., additional

Published
2000
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47. Electron-capture delayed fission properties of242Es

Author

Shaughnessy, D. A., primary, Adams, J. L., additional, Gregorich, K. E., additional, Lane, M. R., additional, Laue, C. A., additional, Lee, D. M., additional, McGrath, C. A., additional, Patin, J. B., additional, Strellis, D. A., additional, Sylwester, E. R., additional, Wilk, P. A., additional, and Hoffman, D. C., additional

Published
2000
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48. Observation of Superheavy Nuclei Produced in the Reaction ofK86rwithP208b

Author

Ninov, V., primary, Gregorich, K. E., additional, Loveland, W., additional, Ghiorso, A., additional, Hoffman, D. C., additional, Lee, D. M., additional, Nitsche, H., additional, Swiatecki, W. J., additional, Kirbach, U. W., additional, Laue, C. A., additional, Adams, J. L., additional, Patin, J. B., additional, Shaughnessy, D. A., additional, Strellis, D. A., additional, and Wilk, P. A., additional

Published
1999
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49. Cross-section limits for the 208Pb(86Kr,n)293118 reaction.

Author

Gregorich, K. E., Ginter, T. N., Loveland, W., Peterson, D., Patin, J. B., Folden, C. M., Hoffman, D. C., Lee, D. M., Nitsche, H., Omtvedt, J. P., Omtvedt, L. A., Stavsetra, L., Sudowe, R., Wilk, P. A., Zielinski, P. M., and Aleklett, K.

Subjects
NUCLEAR cross sections, ENERGY dissipation, COLD fusion, HEAVY nuclei, PHYSICS
Abstract

In April-May, 2001, the previously reported experiment to synthesize element 118 using the 208Pb(86Kr,n)293118 reaction was repeated. No events corresponding to the synthesis of element 118 were observed with a total beam dose of 2.6 x 1018 ions. The simple upper-limit cross-sections (1 event) were 0.9 and 0.6 pb for evaporation residue magnetic rigidities of 2.00 Tm and 2.12 Tm, respectively. A more detailed cross-section calculation, accounting for an assumed narrow excitation function, the energy loss of the beam in traversing the target and the uncertainty in the magnetic rigidity of the Z = 118 recoils is also presented. Re-analysis of the primary data files from the 1999 experiment showed the reported element 118 events are not in the original data. The current results put constraints on the production cross-section for synthesis of very heavy nuclei in cold-fusion reactions. [ABSTRACT FROM AUTHOR]

Published
2003
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50. Random probability analysis of recent 48Ca experiments.

Author

Gross, Carl J., Nazarewicz, Witold, Rykaczewski, Krzysztof P., Stoyer, M. A., Patin, J. B., Kenneally, J. M., Moody, K. J., Shaughnessy, D. A., Stoyer, N. J., Wild, J. F., Wilk, P. A., Utyonkov, V. K., and Oganessian, Yu. Ts.

Abstract

A Monte Carlo random probability analysis developed at LLNL for heavy element research was performed for recent experiments aimed at the synthesis of nuclides with Z≥112 and N≥170, to estimate the probability that observed decay chains were a result of a random event. Low probabilities (< 10−4% for most decay chains) were found. [ABSTRACT FROM AUTHOR]

Published
2005
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