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

J. Khuyagbaatar, A. Yakushev, Ch E. Düllmann, D. Ackermann, L. L. Andersson, M. Asai, M. Block, R. A. Boll, H. Brand, D. M. Cox, M. Dasgupta, X. Derkx, A. Di Nitto, K. Eberhardt, J. Even, M. Evers, C. Fahlander, U. Forsberg, J. M. Gates, N. GharibyanP. Golubev, K. E. Gregorich, J. H. Hamilton, W. Hartmann, R. D. Herzberg, F. P. Heßberger, D. J. Hinde, J. Hoffmann, R. Hollinger, A. Hübner, E. Jäger, B. Kindler, J. V. Kratz, J. Krier, N. Kurz, M. Laatiaoui, S. Lahiri, R. Lang, B. Lommel, M. Maiti, K. Miernik, S. Minami, A. Mistry, C. Mokry, H. Nitsche, J. P. Omtvedt, G. K. Pang, P. Papadakis, D. Renisch, J. Roberto, D. Rudolph, J. Runke, K. P. Rykaczewski, L. G. Sarmiento, M. Schädel, B. Schausten, A. Semchenkov, D. A. Shaughnessy, P. Steinegger, J. Steiner, E. E. Tereshatov, P. Thörle-Pospiech, K. Tinschert, T. Torres De Heidenreich, N. Trautmann, A. Türler, J. Uusitalo, D. E. Ward, M. Wegrzecki, N. Wiehl, S. M. Van Cleve, V. Yakusheva

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Abstract

The heaviest currently known nuclei, which have up to 118 protons, have been produced in Ca48 induced reactions with actinide targets. Among them, the element tennessine (Ts), which has 117 protons, has been synthesized by fusing Ca48 with the radioactive target Bk249, 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 Ts294. 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 Ts293. 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.

Original languageEnglish
Article number054306
JournalPhysical Review C
Volume99
Issue number5
DOIs
Publication statusPublished - May 7 2019

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fusion
decay
separators
nuclei
protons
gases
half life

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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Khuyagbaatar, J., Yakushev, A., Düllmann, C. E., Ackermann, D., Andersson, L. L., Asai, M., ... Yakusheva, V. (2019). Fusion reaction Ca 48 + Bk 249 leading to formation of the element Ts (Z=117). Physical Review C, 99(5), [054306]. https://doi.org/10.1103/PhysRevC.99.054306

Fusion reaction Ca 48 + Bk 249 leading to formation of the element Ts (Z=117). / Khuyagbaatar, J.; Yakushev, A.; Düllmann, Ch E.; Ackermann, D.; Andersson, L. L.; Asai, M.; Block, M.; Boll, R. A.; Brand, H.; Cox, D. M.; Dasgupta, M.; Derkx, X.; Di Nitto, A.; Eberhardt, K.; Even, J.; Evers, M.; Fahlander, C.; Forsberg, U.; Gates, J. M.; Gharibyan, N.; Golubev, P.; Gregorich, K. E.; Hamilton, J. H.; Hartmann, W.; Herzberg, R. D.; Heßberger, F. P.; Hinde, D. J.; Hoffmann, J.; Hollinger, R.; Hübner, A.; Jäger, E.; Kindler, B.; Kratz, J. V.; Krier, J.; Kurz, N.; Laatiaoui, M.; Lahiri, S.; Lang, R.; Lommel, B.; Maiti, M.; Miernik, K.; Minami, S.; Mistry, A.; Mokry, C.; Nitsche, H.; Omtvedt, J. P.; Pang, G. K.; Papadakis, P.; Renisch, D.; Roberto, J.; Rudolph, D.; Runke, J.; Rykaczewski, K. P.; Sarmiento, L. G.; Schädel, M.; Schausten, B.; Semchenkov, A.; Shaughnessy, D. A.; Steinegger, P.; Steiner, J.; Tereshatov, E. E.; Thörle-Pospiech, P.; Tinschert, K.; Torres De Heidenreich, T.; Trautmann, N.; Türler, A.; Uusitalo, J.; Ward, D. E.; Wegrzecki, M.; Wiehl, N.; Van Cleve, S. M.; Yakusheva, V.

In: Physical Review C, Vol. 99, No. 5, 054306, 07.05.2019.

Research output: Contribution to journalArticle

Khuyagbaatar, J, Yakushev, A, Düllmann, CE, Ackermann, D, Andersson, LL, Asai, M, Block, M, Boll, RA, Brand, H, Cox, DM, Dasgupta, M, Derkx, X, Di Nitto, A, Eberhardt, K, Even, J, Evers, M, Fahlander, C, Forsberg, U, Gates, JM, Gharibyan, N, Golubev, P, Gregorich, KE, Hamilton, JH, Hartmann, W, Herzberg, RD, Heßberger, FP, Hinde, DJ, Hoffmann, J, Hollinger, R, Hübner, A, Jäger, E, Kindler, B, Kratz, JV, Krier, J, Kurz, N, Laatiaoui, M, Lahiri, S, Lang, R, Lommel, B, Maiti, M, Miernik, K, Minami, S, Mistry, A, Mokry, C, Nitsche, H, Omtvedt, JP, Pang, GK, Papadakis, P, Renisch, D, Roberto, J, Rudolph, D, Runke, J, Rykaczewski, KP, Sarmiento, LG, Schädel, M, Schausten, B, Semchenkov, A, Shaughnessy, DA, Steinegger, P, Steiner, J, Tereshatov, EE, Thörle-Pospiech, P, Tinschert, K, Torres De Heidenreich, T, Trautmann, N, Türler, A, Uusitalo, J, Ward, DE, Wegrzecki, M, Wiehl, N, Van Cleve, SM & Yakusheva, V 2019, 'Fusion reaction Ca 48 + Bk 249 leading to formation of the element Ts (Z=117)', Physical Review C, vol. 99, no. 5, 054306. https://doi.org/10.1103/PhysRevC.99.054306
Khuyagbaatar J, Yakushev A, Düllmann CE, Ackermann D, Andersson LL, Asai M et al. Fusion reaction Ca 48 + Bk 249 leading to formation of the element Ts (Z=117). Physical Review C. 2019 May 7;99(5). 054306. https://doi.org/10.1103/PhysRevC.99.054306
Khuyagbaatar, J. ; Yakushev, A. ; Düllmann, Ch E. ; Ackermann, D. ; Andersson, L. L. ; Asai, M. ; Block, M. ; Boll, R. A. ; Brand, H. ; Cox, D. M. ; Dasgupta, M. ; Derkx, X. ; Di Nitto, A. ; Eberhardt, K. ; Even, J. ; Evers, M. ; Fahlander, C. ; Forsberg, U. ; Gates, J. M. ; Gharibyan, N. ; Golubev, P. ; Gregorich, K. E. ; Hamilton, J. H. ; Hartmann, W. ; Herzberg, R. D. ; Heßberger, F. P. ; Hinde, D. J. ; Hoffmann, J. ; Hollinger, R. ; Hübner, A. ; Jäger, E. ; Kindler, B. ; Kratz, J. V. ; Krier, J. ; Kurz, N. ; Laatiaoui, M. ; Lahiri, S. ; Lang, R. ; Lommel, B. ; Maiti, M. ; Miernik, K. ; Minami, S. ; Mistry, A. ; Mokry, C. ; Nitsche, H. ; Omtvedt, J. P. ; Pang, G. K. ; Papadakis, P. ; Renisch, D. ; Roberto, J. ; Rudolph, D. ; Runke, J. ; Rykaczewski, K. P. ; Sarmiento, L. G. ; Schädel, M. ; Schausten, B. ; Semchenkov, A. ; Shaughnessy, D. A. ; Steinegger, P. ; Steiner, J. ; Tereshatov, E. E. ; Thörle-Pospiech, P. ; Tinschert, K. ; Torres De Heidenreich, T. ; Trautmann, N. ; Türler, A. ; Uusitalo, J. ; Ward, D. E. ; Wegrzecki, M. ; Wiehl, N. ; Van Cleve, S. M. ; Yakusheva, V. / Fusion reaction Ca 48 + Bk 249 leading to formation of the element Ts (Z=117). In: Physical Review C. 2019 ; Vol. 99, No. 5.
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abstract = "The heaviest currently known nuclei, which have up to 118 protons, have been produced in Ca48 induced reactions with actinide targets. Among them, the element tennessine (Ts), which has 117 protons, has been synthesized by fusing Ca48 with the radioactive target Bk249, 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 Ts294. 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 Ts293. 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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AU - Khuyagbaatar, J.

AU - Yakushev, A.

AU - Düllmann, Ch E.

AU - Ackermann, D.

AU - Andersson, L. L.

AU - Asai, M.

AU - Block, M.

AU - Boll, R. A.

AU - Brand, H.

AU - Cox, D. M.

AU - Dasgupta, M.

AU - Derkx, X.

AU - Di Nitto, A.

AU - Eberhardt, K.

AU - Even, J.

AU - Evers, M.

AU - Fahlander, C.

AU - Forsberg, U.

AU - Gates, J. M.

AU - Gharibyan, N.

AU - Golubev, P.

AU - Gregorich, K. E.

AU - Hamilton, J. H.

AU - Hartmann, W.

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AU - Pang, G. K.

AU - Papadakis, P.

AU - Renisch, D.

AU - Roberto, J.

AU - Rudolph, D.

AU - Runke, J.

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AU - Sarmiento, L. G.

AU - Schädel, M.

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AU - Semchenkov, A.

AU - Shaughnessy, D. A.

AU - Steinegger, P.

AU - Steiner, J.

AU - Tereshatov, E. E.

AU - Thörle-Pospiech, P.

AU - Tinschert, K.

AU - Torres De Heidenreich, T.

AU - Trautmann, N.

AU - Türler, A.

AU - Uusitalo, J.

AU - Ward, D. E.

AU - Wegrzecki, M.

AU - Wiehl, N.

AU - Van Cleve, S. M.

AU - Yakusheva, V.

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