Neutron-deficient superheavy nuclei obtained in the Pu240+Ca48 reaction

Utyonkov, V. K.; Brewer, Nathan T.; Oganessian, Yu. Ts.; Rykaczewski, Krzysztof P.; Abdullin, F. Sh.; Dmitriev, S. N.; Grzywacz, Robert Kazimierz; Itkis, M. G.; Miernik, Krzysztof; Polyakov, A. N.; Roberto, James B.; Sagaidak, R. N.; Shirokovsky, I. V.; Shumeiko, M. V.; Tsyganov, Yu. S.; Voinov, A. A.; Subbotin, V. G.; Sukhov, A. M.; Karpov, A. V.; Popeko, A. G.; Sabel'nikov, A. V.; Svirikhin, A. I.; Vostokin, G. K.; Hamilton, J. H.; Kovrizhnykh, N. D.; Schlattauer, L.; Stoyer, M. A.; Gan, Z.; Huang, W. X.; Ma, L.

doi:10.1103/PhysRevC.97.014320

Neutron-deficient superheavy nuclei obtained in the ${}^{240}{Pu} + {}^{48}{Ca}$ reaction

Journal Article · Tue Jan 30 00:00:00 EST 2018 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.97.014320· OSTI ID:1492172

Utyonkov, V. K. ^[1]; Brewer, Nathan T. ^[2]; Oganessian, Yu. Ts. ^[1]; ^[2]; Abdullin, F. Sh. ^[1]; Dmitriev, S. N. ^[1]; ^[3]; Itkis, M. G. ^[1]; Miernik, Krzysztof ^[4]; Polyakov, A. N. ^[1]; ^[2]; Sagaidak, R. N. ^[1]; Shirokovsky, I. V. ^[1]; Shumeiko, M. V. ^[1]; Tsyganov, Yu. S. ^[1]; Voinov, A. A. ^[1]; Subbotin, V. G. ^[1]; Sukhov, A. M. ^[1]; Karpov, A. V. ^[1]; Popeko, A. G. ^[1] more »

Joint Institute for Nuclear Research, Dubna (Russian Federation)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Warsaw, Warsaw (Poland)
Vanderbilt Univ., Nashville, TN (United States)
Joint Institute for Nuclear Research, Dubna (Russian Federation); Palacky Univ., Olomouc (Czech Republic)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Chinese Academy of Sciences, Lanzhou (China)

Here, we present new results from investigations of the ²⁴⁰Pu + ⁴⁸Ca reaction at a projectile energy of 250 MeV. Three new decay chains of ²⁸⁵Fl were detected with decay properties mostly consistent with those measured in earlier studies. An additional chain was observed where the nuclei may decay through energy levels different from those of the other six chains registered so far. The cross section of the ²⁴⁰Pu(⁴⁸Ca,3n)²⁸⁵Fl reaction was measured to be 0.58^+0.60_–0.33 pb, which is a factor of about 4–5 lower than that measured in the previous experiment at 245 MeV beam energy, consistent with expectations. The origin of an additional chain consisting of a recoil, α particle, and fission event is analyzed. The assignment of 25 short-lived SF events observed in this experiment is also discussed.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE; USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC05-00OR22725; AC52-07NA27344; FG05-88ER40407

OSTI ID:: 1492172

Alternate ID(s):: OSTI ID: 1804286
OSTI ID: 1418710

Report Number(s):: LLNL-JRNL--823947

Journal Information:: Physical Review C, Journal Name: Physical Review C Journal Issue: 1 Vol. 97; ISSN PRVCAN; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

References (38)

Nuclear Ground-State Masses and Deformations Moller, P.; Nix, J. R.; Myers, W. D. Atomic Data and Nuclear Data Tables, Vol. 59, Issue 2, p. 185-381 https://doi.org/10.1006/adnd.1995.1002	journal	March 1995
How well do we understand the synthesis of heavy elements by heavy-ion induced fusion? Reisdorf, W.; Sch�del, M. Zeitschrift f�r Physik A Hadrons and Nuclei, Vol. 343, Issue 1 https://doi.org/10.1007/BF01291597	journal	March 1992
Analysis of fissionability data at high excitation energies: I. The level density problem Reisdorf, W. Zeitschrift f�r Physik A: Atoms and Nuclei, Vol. 300, Issue 2-3 https://doi.org/10.1007/BF01412298	journal	June 1981
Cross sections for evaporation residue production near theN=126 shell closure Vermeulen, D.; Clerc, H. -G.; Sahm, C. -C. Zeitschrift f�r Physik A Atoms and Nuclei, Vol. 318, Issue 2 https://doi.org/10.1007/BF01413464	journal	June 1984
Some remarks on the error analysis in the case of poor statistics Schmidt, K. -H.; Sahm, C. -C.; Pielenz, K. Zeitschrift f�r Physik A Atoms and Nuclei, Vol. 316, Issue 1 https://doi.org/10.1007/BF01415656	journal	February 1984
A new test for random events of an exponential distribution Schmidt, K. H. The European Physical Journal A, Vol. 8, Issue 1 https://doi.org/10.1007/s100500050018	journal	January 2000
A new test for random events of an exponential distribution Schmidt, K. H. The European Physical Journal A, Vol. 8, Issue 1 https://doi.org/10.1007/s100500070129	journal	July 2000
Equilibrium configurations of rotating charged or gravitating liquid masses with surface tension. II Cohen, S.; Plasil, F.; Swiatecki, W. J. Annals of Physics, Vol. 82, Issue 2 https://doi.org/10.1016/0003-4916(74)90126-2	journal	February 1974
Nuclear properties according to the Thomas-Fermi model Myers, W. D.; Swiatecki, W. J. Nuclear Physics A, Vol. 601, Issue 2 https://doi.org/10.1016/0375-9474(95)00509-9	journal	May 1996
Monte Carlo simulation of ion trajectories in the kinematic recoil separator “VASSILISSA” Popeko, A. G.; Malyshev, O. N.; Sagaidak, R. N. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 126, Issue 1-4 https://doi.org/10.1016/S0168-583X(96)01094-4	journal	April 1997
Monte-Carlo optimization of the transmission of recoil separators Popeko, A. G.; Malyshev, O. N.; Yeremin, A. V. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 427, Issue 1-2 https://doi.org/10.1016/S0168-9002(98)01561-7	journal	May 1999
Nuclear ground-state masses and deformations: FRDM(2012) Möller, P.; Sierk, A. J.; Ichikawa, T. Atomic Data and Nuclear Data Tables, Vol. 109-110 https://doi.org/10.1016/j.adt.2015.10.002	journal	May 2016
Simulation of angular and energy distributions for heavy evaporation residues using statistical model approximations and TRIM code Sagaidak, R. N.; Utyonkov, V. K.; Scarlassara, F. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 700 https://doi.org/10.1016/j.nima.2012.10.064	journal	February 2013
NRV web knowledge base on low-energy nuclear physics Karpov, A. V.; Denikin, A. S.; Naumenko, M. A. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 859 https://doi.org/10.1016/j.nima.2017.01.069	journal	July 2017
On-line separators for the Dubna Superheavy Element Factory Popeko, A. G. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 376 https://doi.org/10.1016/j.nimb.2016.02.025	journal	June 2016
The Ame2003 atomic mass evaluation Wapstra, A. H.; Audi, G.; Thibault, C. Nuclear Physics A, Vol. 729, Issue 1 https://doi.org/10.1016/j.nuclphysa.2003.11.002	journal	December 2003
The Ame2003 atomic mass evaluation Audi, G.; Wapstra, A. H.; Thibault, C. Nuclear Physics A, Vol. 729, Issue 1 https://doi.org/10.1016/j.nuclphysa.2003.11.003	journal	December 2003
Cross sections for the production of superheavy nuclei Zagrebaev, V. I.; Greiner, W. Nuclear Physics A, Vol. 944 https://doi.org/10.1016/j.nuclphysa.2015.02.010	journal	December 2015
Superheavy nuclei from 48Ca-induced reactions Oganessian, Yu. Ts.; Utyonkov, V. K. Nuclear Physics A, Vol. 944 https://doi.org/10.1016/j.nuclphysa.2015.07.003	journal	December 2015
Ways to produce new superheavy isotopes with Z = 111–117 in charged particle evaporation channels Hong, Juhee; Adamian, G. G.; Antonenko, N. V. Physics Letters B, Vol. 764 https://doi.org/10.1016/j.physletb.2016.11.002	journal	January 2017
Fusion probability and survivability in estimates of heaviest nuclei production Sagaidak, Roman N. EPJ Web of Conferences, Vol. 21 https://doi.org/10.1051/epjconf/20122106001	journal	January 2012
Super-heavy element research Oganessian, Yu Ts; Utyonkov, V. K. Reports on Progress in Physics, Vol. 78, Issue 3 https://doi.org/10.1088/0034-4885/78/3/036301	journal	February 2015
The NUBASE2016 evaluation of nuclear properties Audi, G.; Kondev, F. G.; Wang, Meng Chinese Physics C, Vol. 41, Issue 3 https://doi.org/10.1088/1674-1137/41/3/030001	journal	March 2017
The AME2016 atomic mass evaluation (II). Tables, graphs and references Wang, Meng; Audi, G.; Kondev, F. G. Chinese Physics C, Vol. 41, Issue 3 https://doi.org/10.1088/1674-1137/41/3/030003	journal	March 2017
Excitation functions for production of heavy actinides from interactions of Ca 40 and Ca 48 ions with Cm 248 Hoffman, Darleane C.; Fowler, M. M.; Daniels, W. R. Physical Review C, Vol. 31, Issue 5 https://doi.org/10.1103/PhysRevC.31.1763	journal	May 1985
Actinide production in reactions of heavy ions with Cm 248 Moody, Kenton J.; Lee, Diana; Welch, Robert B. Physical Review C, Vol. 33, Issue 4 https://doi.org/10.1103/PhysRevC.33.1315	journal	April 1986
Macroscopic model of rotating nuclei Sierk, Arnold J. Physical Review C, Vol. 33, Issue 6 https://doi.org/10.1103/PhysRevC.33.2039	journal	June 1986
Actinide production in Xe 136 bombardments of Cf 249 Gregorich, Kenneth E.; Moody, Kenton J.; Lee, D. Physical Review C, Vol. 35, Issue 6 https://doi.org/10.1103/PhysRevC.35.2117	journal	June 1987
Spontaneous-fission half-lives of deformed superheavy nuclei Smolańczuk, R.; Skalski, J.; Sobiczewski, A. Physical Review C, Vol. 52, Issue 4 https://doi.org/10.1103/PhysRevC.52.1871	journal	October 1995
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 Oganessian, Yu. Ts.; Utyonkov, V. K.; Lobanov, Yu. V. Physical Review C, Vol. 70, Issue 6 https://doi.org/10.1103/PhysRevC.70.064609	journal	December 2004
Investigation of the 243 Am + 48 Ca reaction products previously observed in the experiments on elements 113, 115, and 117 Oganessian, Yu. Ts.; Abdullin, F. Sh.; Dmitriev, S. N. Physical Review C, Vol. 87, Issue 1 https://doi.org/10.1103/PhysRevC.87.014302	journal	January 2013
Experiments on the synthesis of superheavy nuclei Fl 284 and Fl 285 in the Pu 239 , 240 + Ca 48 reactions Utyonkov, V. K.; Brewer, N. T.; Oganessian, Yu. Ts. Physical Review C, Vol. 92, Issue 3 https://doi.org/10.1103/PhysRevC.92.034609	journal	September 2015
New Superheavy Element Isotopes: Pu 242 ( Ca 48 , 5 n ) 1 285 14 Ellison, P. A.; Gregorich, K. E.; Berryman, J. S. Physical Review Letters, Vol. 105, Issue 18 https://doi.org/10.1103/PhysRevLett.105.182701	journal	October 2010
NRV web knowledge base on low-energy nuclear physics Karpov, V.; Denikin, A. S.; Alekseev, A. P. Physics of Atomic Nuclei, Vol. 79, Issue 5 https://doi.org/10.1134/S1063778816040141	journal	September 2016
Review of even element super-heavy nuclei and search for element 120 Hofmann, S.; Heinz, S.; Mann, R. The European Physical Journal A, Vol. 52, Issue 6 https://doi.org/10.1140/epja/i2016-16180-4	journal	June 2016
Excitation functions for production of heavy actinides from interactions of ⁴⁰Ca and ⁴⁸Ca ions with ²⁴⁸Cm Hoffman, Darleane C.; Fowler, M. M.; Daniels, W. R. World Scientific Series in 20th Century Chemistry https://doi.org/10.1142/9789812795953_0029	book	May 1994
Nuclear Ground-State Masses and Deformations Möller, P.; Nix, J. R.; Myers, W. D. arXiv https://doi.org/10.48550/arxiv.nucl-th/9308022	text	January 1993
Review Of Even Element Super-Heavy Nuclei And Search For Element 120 Hofmann, Sigurd; Heinz, S.; Grzywacz, R. Zenodo https://doi.org/10.5281/zenodo.897925	text	January 2016

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