Investigation of the $^{243}$Am+$^{48}$Ca reaction products previously observed in the experiments on elements 113, 115, and 117 - INSPIRE

DataBETA

Investigation of the $^{243}$ Am+ $^{48}$ Ca reaction products previously observed in the experiments on elements 113, 115, and 117

Jan 3, 2013

10 pages

Published in:

Phys.Rev.C 87 (2013) 1, 014302

Published: Jan 3, 2013

DOI:

10.1103/PhysRevC.87.014302

View in:

reference search169 citations

Citations per year

Abstract: (APS)

Results from the production and decay properties of element 115 nuclei observed using the reaction 243Am+48Ca at various beam energies between November 1, 2010, and February 26, 2012, at the Dubna Gas Filled Recoil Separator are presented. This long-running experiment with a total beam dose of 3.3×1019 and carried out in the excitation energy range E*=31–47 MeV of the 291115 compound nucleus resulted in observation of three isotopes of element 115 with masses 287, 288, and 289. The 28 detected decay chains of 288115 show that this isotope is produced with the maximum probability at E*=34.0–38.3 MeV with a corresponding cross section of σ3n=8.5−3.7+6.4 pb. The four events attributed to the isotope 289115 that decays via a short α→α→SF chain could be detected only at the lowest excitation energy E*=31–36 MeV, in accordance with what could be expected for the 2n-evaporation channel of the reaction. The decay characteristics of this nuclide were established earlier (2010) and more recently (2012) in the reaction 249Bk(48Ca,4n)293117 and following α decay to 289115. At the energy E*=44.8±2.3 MeV we observed only a single long chain of the isotope 287115. The decay properties of nuclei starting at 288115 and 287115 isotopes obtained in the present work reproduce in full the results of the first experiment of 2003 that reported the discovery of elements 115 and 113. The excitation functions of the production of the isotopes of element 115 and observation of the isotope 289115 in cross-bombardment reactions with the targets of 243Am and 249Bk provide additional evidence of the identification of the nuclei of elements 115 and 113. The experiments were carried out using the 48Ca beam of the U400 cyclotron of the Flerov Laboratory of Nuclear Reactions, JINR.

27.90.+b
25.70.Gh
23.60.+e

References(32)

Figures(0)

- Pure Appl.Chem. 76 1715

- Prog.Theor.Phys.Suppl. 154 406

Experiments on the synthesis of element 115 in the reaction am-243(ca-48, xn) x-115-291

et al.

- Phys.Rev.C 69 (2004) 021601,
- Phys.Rev.C 69 (2004) 029902 (erratum)
•
DOI:
- 10.1103/PhysRevC.69.029902

Synthesis of elements 115 and 113 in the reaction 243Am+48Ca

et al.

- Phys.Rev.C 72 (2005) 034611
•
DOI:
- 10.1103/PhysRevC.72.034611

Synthesis of the isotope 282113 in the Np237+Ca48 fusion reaction

et al.

- Phys.Rev.C 76 (2007) 011601
•
DOI:
- 10.1103/PhysRevC.76.011601

Synthesis of a New Element with Atomic Number Z=117

et al.

- Phys.Rev.Lett. 104 (2010) 142502
•
DOI:
- 10.1103/PhysRevLett.104.142502

Eleven new heaviest isotopes of elements Z=105 to Z=117 identified among the products of Bk-249 + Ca-48 reactions

et al.

- Phys.Rev.C 83 (2011) 054315
•
DOI:
- 10.1103/PhysRevC.83.054315

- NOONE 34 R165

- Pure Appl.Chem. 83 1485

- NOONE 15 1

- Nucl.Phys.A 787 388C

- J.Phys.Soc.Jap. 73 2593

- J.Phys.Soc.Jap. 77 045001

New Result in the Production and Decay of an Isotope, 278[113], of the 113th Element

et al.

- J.Phys.Soc.Jap. 81 (2012) 103201
•
e-Print:
- 1209.6431
•
DOI:
- 10.1143/JPSJ.81.103201

Production and Decay of the Heaviest Nuclei 1293, 29417 and 129418

et al.

- Phys.Rev.Lett. 109 (2012) 162501
•
DOI:
- 10.1103/PhysRevLett.109.162501

New Insights into the Am-243 + Ca-48 Reaction Products Previously Observed in the Experiments on Elements 113, 115, and 117

et al.

- Phys.Rev.Lett. 108 (2012) 022502
•
DOI:
- 10.1103/PhysRevLett.108.022502

- J 214 (1994)

The Ame2003 atomic mass evaluation (II). Tables, graphs and references

G. Audi
(
- Orsay, LPT and
- NIKHEF, Amsterdam
)
,
A.H. Wapstra
(
- Orsay, LPT and
- NIKHEF, Amsterdam
)
,
C. Thibault
(
- Orsay, LPT and
- NIKHEF, Amsterdam
)

- Nucl.Phys.A 729 (2002) 337-676
•
DOI:
- 10.1016/j.nuclphysa.2003.11.003

- NOONE 36 1157

Nuclear properties according to the Thomas-Fermi model

W.D. Myers
(
- LBL, Berkeley
)
,
W.J. Swiatecki
(
- LBL, Berkeley
)

- Nucl.Phys.A 601 (1996) 141-167
•
DOI:
- 10.1016/0375-9474(95)00509-9

Range and stopping-power tables for 2.5–500 MeV/nucleon heavy ions in solids

- Atom.Data Nucl.Data Tabl. 46 (1990) 1-213
•
DOI:
- 10.1016/0092-640X(90)90001-Z

- NOONE 316 19

- Nature 433 705

Alpha-decay properties of superheavy elements Z = 113 - 125 in the relativistic mean-field theory with vector self-coupling of omega meson

- Phys.Rev.C 71 (2005) 054310
•
e-Print:
- nucl-th/0409066
•
DOI:
- 10.1103/PhysRevC.71.054310

Fission half-lives of super-heavy nuclei in a microscopic approach

M. Warda
(
- Lublin, Curie U.
)
,
J.L. Egido
(
- Madrid, Autonoma U.
)

- Phys.Rev.C 86 (2012) 014322
•
e-Print:
- 1204.5867
•
DOI:
- 10.1103/PhysRevC.86.014322

1-25 of 32
1
2
25 / page