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Fusion reaction 48Ca + 249Bk leading to formation of the element Ts (Z=117)

Khuyagbaatar, J.; Yakushev, A.; Düllmann, Ch E.; Ackermann, D.; Andersson, L. L. LU ; Asai, M.; Block, M.; Boll, R. A.; Brand, H. and Cox, D. M. LU , et al. (2019) In Physical Review C 99(5).
Abstract

The heaviest currently known nuclei, which have up to 118 protons, have been produced in 48Ca induced reactions with actinide targets. Among them, the element tennessine (Ts), which has 117 protons, has been synthesized by fusing 48Ca with the radioactive target 249Bk, which has a half-life of 327 d. The experiment was performed at the gas-filled recoil separator TASCA. Two long and two short α decay chains were observed. The long chains were attributed to the decay of 294Ts. The possible origin of the short-decay chains is discussed in comparison with the known experimental data. They are found to fit with the decay chain patterns attributed to 293Ts. The present experimental... (More)

The heaviest currently known nuclei, which have up to 118 protons, have been produced in 48Ca induced reactions with actinide targets. Among them, the element tennessine (Ts), which has 117 protons, has been synthesized by fusing 48Ca with the radioactive target 249Bk, which has a half-life of 327 d. The experiment was performed at the gas-filled recoil separator TASCA. Two long and two short α decay chains were observed. The long chains were attributed to the decay of 294Ts. The possible origin of the short-decay chains is discussed in comparison with the known experimental data. They are found to fit with the decay chain patterns attributed to 293Ts. The present experimental results confirm the previous findings at the Dubna Gas-Filled Recoil Separator on the decay chains originating from the nuclei assigned to Ts.

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Contribution to journal
publication status
published
subject
keywords
superheavy elements, element 117 (Ts), alpha decay, gas-filled separator
in
Physical Review C
volume
99
issue
5
pages
16 pages
publisher
American Physical Society
external identifiers
  • scopus:85065705289
ISSN
2469-9985
DOI
10.1103/PhysRevC.99.054306
language
English
LU publication?
yes
id
9933961f-e378-4bfa-8d9d-35ad766cbbf4
date added to LUP
2019-06-04 08:44:34
date last changed
2019-09-17 04:55:55
@article{9933961f-e378-4bfa-8d9d-35ad766cbbf4,
  abstract     = {<p>The heaviest currently known nuclei, which have up to 118 protons, have been produced in <sup>48</sup>Ca induced reactions with actinide targets. Among them, the element tennessine (Ts), which has 117 protons, has been synthesized by fusing <sup>48</sup>Ca with the radioactive target <sup>249</sup>Bk, which has a half-life of 327 d. The experiment was performed at the gas-filled recoil separator TASCA. Two long and two short α decay chains were observed. The long chains were attributed to the decay of <sup>294</sup>Ts. The possible origin of the short-decay chains is discussed in comparison with the known experimental data. They are found to fit with the decay chain patterns attributed to <sup>293</sup>Ts. The present experimental results confirm the previous findings at the Dubna Gas-Filled Recoil Separator on the decay chains originating from the nuclei assigned to Ts.</p>},
  articleno    = {054306},
  author       = {Khuyagbaatar, J. and Yakushev, A. and Düllmann, Ch E. and Ackermann, D. and Andersson, L. L. and Asai, M. and Block, M. and Boll, R. A. and Brand, H. and Cox, D. M. and Dasgupta, M. and Derkx, X. and Di Nitto, A. and Eberhardt, K. and Even, J. and Evers, M. and Fahlander, C. and Forsberg, U. and Gates, J. M. and Gharibyan, N. and Golubev, P. and Gregorich, K. E. and Hamilton, J. H. and Hartmann, W. and Herzberg, R. D. and Heßberger, F. P. and Hinde, D. J. and Hoffmann, J. and Hollinger, R. and Hübner, A. and Jäger, E. and Kindler, B. and Kratz, J. V. and Krier, J. and Kurz, N. and Laatiaoui, M. and Lahiri, S. and Lang, R. and Lommel, B. and Maiti, M. and Miernik, K. and Minami, S. and Mistry, A. and Mokry, C. and Nitsche, H. and Omtvedt, J. P. and Pang, G. K. and Papadakis, P. and Renisch, D. and Roberto, J. and Rudolph, D. and Runke, J. and Rykaczewski, K. P. and Sarmiento, L. G. and Schädel, M. and Schausten, B. and Semchenkov, A. and Shaughnessy, D. A. and Steinegger, P. and Steiner, J. and Tereshatov, E. E. and Thörle-Pospiech, P. and Tinschert, K. and Torres De Heidenreich, T. and Trautmann, N. and Türler, A. and Uusitalo, J. and Ward, D. E. and Wegrzecki, M. and Wiehl, N. and Van Cleve, S. M. and Yakusheva, V.},
  issn         = {2469-9985},
  keyword      = {superheavy elements,element 117 (Ts),alpha decay,gas-filled separator},
  language     = {eng},
  month        = {05},
  number       = {5},
  pages        = {16},
  publisher    = {American Physical Society},
  series       = {Physical Review C},
  title        = {Fusion reaction <sup>48</sup>Ca + <sup>249</sup>Bk leading to formation of the element Ts (Z=117)},
  url          = {http://dx.doi.org/10.1103/PhysRevC.99.054306},
  volume       = {99},
  year         = {2019},
}