Search for elements 119 and 120

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. Gharibyan; P. 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. K. Mistry; C. Mokry; H. Nitsche; J. P. Omtvedt; G. K. Pang; P. Papadakis; D. Renisch; J. B. 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; M. Wegrzecki; N. Wiehl; S. M. Van Cleve; V. Yakusheva

doi:10.1103/PhysRevC.102.064602

Search for elements 119 and 120

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. K. Mistry, C. Mokry, H. Nitsche, J. P. Omtvedt, G. K. Pang, P. Papadakis, D. Renisch, J. B. 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, M. Wegrzecki, N. Wiehl, S. M. Van Cleve, V. Yakusheva

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

A search for production of the superheavy elements with atomic numbers 119 and 120 was performed in the Ti50+Bk249 and Ti50+Cf249 fusion-evaporation reactions, respectively, at the gas-filled recoil separator TASCA at GSI Darmstadt, Germany. Over four months of irradiation, the Bk249 target partially decayed into Cf249, which allowed for a simultaneous search for both elements. Neither was detected at cross-section sensitivity levels of 65 and 200 fb for the Ti50+Bk249 and Ti50+Cf249 reactions, respectively, at a midtarget beam energy of Elab=281.5 MeV. The nonobservation of elements 119 and 120 is discussed within the concept of fusion-evaporation reactions including various theoretical predictions on the fission-barrier heights of superheavy nuclei in the region of the island of stability.

Original language	English
Article number	064602
Journal	Physical Review C
Volume	102
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.102.064602
Publication status	Published - 2 Dec 2020

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Khuyagbaatar, J., Yakushev, A., Düllmann, C. 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., ... Yakusheva, V. (2020). Search for elements 119 and 120. Physical Review C, 102(6), Article 064602. https://doi.org/10.1103/PhysRevC.102.064602

@article{1c142793208f4564b341c31c367fbe64,

title = "Search for elements 119 and 120",

abstract = "A search for production of the superheavy elements with atomic numbers 119 and 120 was performed in the Ti50+Bk249 and Ti50+Cf249 fusion-evaporation reactions, respectively, at the gas-filled recoil separator TASCA at GSI Darmstadt, Germany. Over four months of irradiation, the Bk249 target partially decayed into Cf249, which allowed for a simultaneous search for both elements. Neither was detected at cross-section sensitivity levels of 65 and 200 fb for the Ti50+Bk249 and Ti50+Cf249 reactions, respectively, at a midtarget beam energy of Elab=281.5 MeV. The nonobservation of elements 119 and 120 is discussed within the concept of fusion-evaporation reactions including various theoretical predictions on the fission-barrier heights of superheavy nuclei in the region of the island of stability.",

author = "J. Khuyagbaatar and A. Yakushev and D{\"u}llmann, {Ch E.} and D. Ackermann and Andersson, {L. L.} and M. Asai and M. Block and Boll, {R. A.} and H. Brand and Cox, {D. M.} and M. Dasgupta and X. Derkx and {Di Nitto}, A. and K. Eberhardt and J. Even and M. Evers and C. Fahlander and U. Forsberg and Gates, {J. M.} and N. Gharibyan and P. Golubev and Gregorich, {K. E.} and Hamilton, {J. H.} and W. Hartmann and Herzberg, {R. D.} and He{\ss}berger, {F. P.} and Hinde, {D. J.} and J. Hoffmann and R. Hollinger and A. H{\"u}bner and E. J{\"a}ger and B. Kindler and Kratz, {J. V.} and J. Krier and N. Kurz and M. Laatiaoui and S. Lahiri and R. Lang and B. Lommel and M. Maiti and K. Miernik and S. Minami and Mistry, {A. K.} and C. Mokry and H. Nitsche and Omtvedt, {J. P.} and Pang, {G. K.} and P. Papadakis and D. Renisch and Roberto, {J. B.} and D. Rudolph and J. Runke and Rykaczewski, {K. P.} and Sarmiento, {L. G.} and M. Sch{\"a}del and B. Schausten and A. Semchenkov and Shaughnessy, {D. A.} and P. Steinegger and J. Steiner and Tereshatov, {E. E.} and P. Th{\"o}rle-Pospiech and K. Tinschert and {Torres De Heidenreich}, T. and N. Trautmann and A. T{\"u}rler and J. Uusitalo and M. Wegrzecki and N. Wiehl and {Van Cleve}, {S. M.} and V. Yakusheva",

note = "Publisher Copyright: {\textcopyright} 2020 American Physical Society.",

year = "2020",

month = dec,

day = "2",

doi = "10.1103/PhysRevC.102.064602",

language = "English",

volume = "102",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "6",

}

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, AK, Mokry, C, Nitsche, H, Omtvedt, JP, Pang, GK, Papadakis, P, Renisch, D, Roberto, JB, 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, Wegrzecki, M, Wiehl, N, Van Cleve, SM & Yakusheva, V 2020, 'Search for elements 119 and 120', Physical Review C, vol. 102, no. 6, 064602. https://doi.org/10.1103/PhysRevC.102.064602

TY - JOUR

T1 - Search for elements 119 and 120

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.

AU - Herzberg, R. D.

AU - Heßberger, F. P.

AU - Hinde, D. J.

AU - Hoffmann, J.

AU - Hollinger, R.

AU - Hübner, A.

AU - Jäger, E.

AU - Kindler, B.

AU - Kratz, J. V.

AU - Krier, J.

AU - Kurz, N.

AU - Laatiaoui, M.

AU - Lahiri, S.

AU - Lang, R.

AU - Lommel, B.

AU - Maiti, M.

AU - Miernik, K.

AU - Minami, S.

AU - Mistry, A. K.

AU - Mokry, C.

AU - Nitsche, H.

AU - Omtvedt, J. P.

AU - Pang, G. K.

AU - Papadakis, P.

AU - Renisch, D.

AU - Roberto, J. B.

AU - Rudolph, D.

AU - Runke, J.

AU - Rykaczewski, K. P.

AU - Sarmiento, L. G.

AU - Schädel, M.

AU - Schausten, B.

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 - Wegrzecki, M.

AU - Wiehl, N.

AU - Van Cleve, S. M.

AU - Yakusheva, V.

PY - 2020/12/2

Y1 - 2020/12/2

N2 - A search for production of the superheavy elements with atomic numbers 119 and 120 was performed in the Ti50+Bk249 and Ti50+Cf249 fusion-evaporation reactions, respectively, at the gas-filled recoil separator TASCA at GSI Darmstadt, Germany. Over four months of irradiation, the Bk249 target partially decayed into Cf249, which allowed for a simultaneous search for both elements. Neither was detected at cross-section sensitivity levels of 65 and 200 fb for the Ti50+Bk249 and Ti50+Cf249 reactions, respectively, at a midtarget beam energy of Elab=281.5 MeV. The nonobservation of elements 119 and 120 is discussed within the concept of fusion-evaporation reactions including various theoretical predictions on the fission-barrier heights of superheavy nuclei in the region of the island of stability.

AB - A search for production of the superheavy elements with atomic numbers 119 and 120 was performed in the Ti50+Bk249 and Ti50+Cf249 fusion-evaporation reactions, respectively, at the gas-filled recoil separator TASCA at GSI Darmstadt, Germany. Over four months of irradiation, the Bk249 target partially decayed into Cf249, which allowed for a simultaneous search for both elements. Neither was detected at cross-section sensitivity levels of 65 and 200 fb for the Ti50+Bk249 and Ti50+Cf249 reactions, respectively, at a midtarget beam energy of Elab=281.5 MeV. The nonobservation of elements 119 and 120 is discussed within the concept of fusion-evaporation reactions including various theoretical predictions on the fission-barrier heights of superheavy nuclei in the region of the island of stability.

UR - http://www.scopus.com/inward/record.url?scp=85100124980&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.102.064602

DO - 10.1103/PhysRevC.102.064602

M3 - Article

SN - 2469-9985

VL - 102

JO - Physical Review C

JF - Physical Review C

IS - 6

M1 - 064602

ER -

Search for elements 119 and 120

Abstract

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