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Toward the Discovery of New Elements: Production of Livermorium (Z=116) with 50Ti

Gates, J. M. ; Orford, R. ; Rudolph, D. LU orcid ; Appleton, C. ; Barrios, B. M. ; Benitez, J. Y. ; Bordeau, M. ; Botha, W. ; Campbell, C. M. and Chadderton, J. , et al. (2024) In Physical Review Letters 133(17).
Abstract
The 244Pu(50Ti,xn)294−xLv reaction was investigated at Lawrence Berkeley National Laboratory’s 88-Inch Cyclotron. The experiment was aimed at the production of a superheavy element with Z ≥ 114 by irradiating an actinide target with a beam heavier than 48Ca. Produced Lv ions were separated from the unwanted beam and nuclear reaction products using the Berkeley Gas-filled Separator and implanted into a newly commissioned focal-plane detector system. Two decay chains were observed and assigned to the decay of 290Lv. The production cross section was measured to be σprod =0.44+0.58−0.28 pb at a center-of target center-of-mass energy of 220(3) MeV. This represents... (More)
The 244Pu(50Ti,xn)294−xLv reaction was investigated at Lawrence Berkeley National Laboratory’s 88-Inch Cyclotron. The experiment was aimed at the production of a superheavy element with Z ≥ 114 by irradiating an actinide target with a beam heavier than 48Ca. Produced Lv ions were separated from the unwanted beam and nuclear reaction products using the Berkeley Gas-filled Separator and implanted into a newly commissioned focal-plane detector system. Two decay chains were observed and assigned to the decay of 290Lv. The production cross section was measured to be σprod =0.44+0.58−0.28 pb at a center-of target center-of-mass energy of 220(3) MeV. This represents the first published measurement of the production of a superheavy element near the “island of stability,” with a beam of 50Ti and is an essential precursor in the pursuit of searching for new elements beyond Z = 118. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Synthesis of new superheavy elements, Fusion evaporation reactions, Nuclear reactions, Nuclear physics
in
Physical Review Letters
volume
133
issue
17
article number
172502
pages
8 pages
publisher
American Physical Society
external identifiers
  • scopus:85207292191
  • pmid:39530806
ISSN
1079-7114
DOI
10.1103/PhysRevLett.133.172502
project
Nuclear Structure at the Limits: Isotope-selective Spectroscopy
Characterization of New Superheavy Elements
Heavy Element Research at LBNL 88-Inch Cyclotron
Superheavy Element Research at Lawrence Berkeley National Laboratory
language
English
LU publication?
yes
id
7de393f1-7d7c-4ccf-885b-21839f3baa65
date added to LUP
2024-10-21 20:53:08
date last changed
2025-05-30 03:16:32
@article{7de393f1-7d7c-4ccf-885b-21839f3baa65,
  abstract     = {{The <sup>244</sup>Pu(<sup>50</sup>Ti,<i>xn</i>)<sup>294−x</sup>Lv reaction was investigated at Lawrence Berkeley National Laboratory’s 88-Inch Cyclotron. The experiment was aimed at the production of a superheavy element with <i>Z</i> ≥ 114 by irradiating an actinide target with a beam heavier than <sup>48</sup>Ca. Produced Lv ions were separated from the unwanted beam and nuclear reaction products using the Berkeley Gas-filled Separator and implanted into a newly commissioned focal-plane detector system. Two decay chains were observed and assigned to the decay of <sup>290</sup>Lv. The production cross section was measured to be σ<sub>prod</sub> =0.44+0.58−0.28 pb at a center-of target center-of-mass energy of 220(3) MeV. This represents the first published measurement of the production of a superheavy element near the “island of stability,” with a beam of <sup>50</sup>Ti and is an essential precursor in the pursuit of searching for new elements beyond <i>Z</i> = 118.}},
  author       = {{Gates, J. M. and Orford, R. and Rudolph, D. and Appleton, C. and Barrios, B. M. and Benitez, J. Y. and Bordeau, M. and Botha, W. and Campbell, C. M. and Chadderton, J. and Chemey, A. T. and Clark, R. M. and Crawford, H. L. and Despotopulos, J. D. and Dorvaux, O. and Esker, N. E. and Fallon, P. and Folden, C. M. and Gall, B. J. P. and Garcia, F. H. and Golubev, P. and Gooding, J. A. and Grebo, M. and Gregorich, K. E. and Guerrero, M. and Henderson, R. A. and Herzberg, R. -D. and Hrabar, Y. and King, T. T. and Kireeff Covo, M. and Kirkland, A. S. and Krücken, R. and Leistenschneider, E. and Lykiardopoulou, E. M. and McCarthy, M. and Mildon, J. A. and Müller-Gatermann, C. and Phair, L. and Pore, J. L. and Rice, E. and Rykaczewski, K. P. and Sammis, B. N. and Sarmiento, L. G. and Seweryniak, D and Sharp, D. K. and Sinjari, A. and Steinegger, P. and Stoyer, M. A. and Szornel, J. M. and Thomas, K. and Todd, D. S. and Vo, P. and Watson, V. and Wooddy, P. T.}},
  issn         = {{1079-7114}},
  keywords     = {{Synthesis of new superheavy elements; Fusion evaporation reactions; Nuclear reactions; Nuclear physics}},
  language     = {{eng}},
  month        = {{10}},
  number       = {{17}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Toward the Discovery of New Elements: Production of Livermorium (<i>Z</i>=116) with <sup>50</sup>Ti}},
  url          = {{https://lup.lub.lu.se/search/files/197988236/PhysRevLett.133.172502.pdf}},
  doi          = {{10.1103/PhysRevLett.133.172502}},
  volume       = {{133}},
  year         = {{2024}},
}