Recoil-α-fission and recoil-α-α-fission events observed in the reaction 48Ca + 243Am

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Recoil-α-fission and recoil-α-α-fission events observed in the reaction 48Ca + 243Am. / Forsberg, U.; Rudolph, D.; Andersson, L. L.; Di Nitto, A.; Düllmann, Ch E.; Fahlander, C.; Gates, J. M.; Golubev, P.; Gregorich, K. E.; Gross, C. J.; Herzberg, R. D.; Heßberger, F. P.; Khuyagbaatar, J.; Kratz, J. V.; Rykaczewski, K.; Sarmiento, L. G.; Schädel, M.; Yakushev, A.; Åberg, Sven; Ackermann, D.; Block, M.; Brand, H.; Carlsson, Gillis; Cox, D.; Derkx, X.; Dobaczewski, J.; Eberhardt, K.; Even, J.; Gerl, J.; Jäger, E.; Kindler, B.; Krier, J.; Kojouharov, I.; Kurz, N.; Lommel, B.; Mistry, A.; Mokry, C.; Nazarewicz, W.; Nitsche, H.; Omtvedt, J. P.; Papadakis, P.; Ragnarsson, I.; Runke, J.; Schaffner, H.; Schausten, B.; Shi, Yue; Thörle-Pospiech, P.; Torres, T.; Traut, T.; Trautmann, N.; Türler, A.; Ward, A.; Ward, D. E.; Wiehl, N.

In: Nuclear Physics, Section A, Vol. 953, 01.09.2016, p. 117-138.

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Forsberg, U, Rudolph, D, Andersson, LL, Di Nitto, A, Düllmann, CE, Fahlander, C, Gates, JM, Golubev, P, Gregorich, KE, Gross, CJ, Herzberg, RD, Heßberger, FP, Khuyagbaatar, J, Kratz, JV, Rykaczewski, K, Sarmiento, LG, Schädel, M, Yakushev, A, Åberg, S, Ackermann, D, Block, M, Brand, H, Carlsson, G, Cox, D, Derkx, X, Dobaczewski, J, Eberhardt, K, Even, J, Gerl, J, Jäger, E, Kindler, B, Krier, J, Kojouharov, I, Kurz, N, Lommel, B, Mistry, A, Mokry, C, Nazarewicz, W, Nitsche, H, Omtvedt, JP, Papadakis, P, Ragnarsson, I, Runke, J, Schaffner, H, Schausten, B, Shi, Y, Thörle-Pospiech, P, Torres, T, Traut, T, Trautmann, N, Türler, A, Ward, A, Ward, DE & Wiehl, N 2016, 'Recoil-α-fission and recoil-α-α-fission events observed in the reaction 48Ca + 243Am', Nuclear Physics, Section A, vol. 953, pp. 117-138. https://doi.org/10.1016/j.nuclphysa.2016.04.025

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Forsberg U, Rudolph D, Andersson LL, Di Nitto A, Düllmann CE, Fahlander C, Gates JM, Golubev P, Gregorich KE, Gross CJ, Herzberg RD, Heßberger FP, Khuyagbaatar J, Kratz JV, Rykaczewski K, Sarmiento LG, Schädel M, Yakushev A, Åberg S, Ackermann D, Block M, Brand H, Carlsson G, Cox D, Derkx X, Dobaczewski J, Eberhardt K, Even J, Gerl J, Jäger E, Kindler B, Krier J, Kojouharov I, Kurz N, Lommel B, Mistry A, Mokry C, Nazarewicz W, Nitsche H, Omtvedt JP, Papadakis P, Ragnarsson I, Runke J, Schaffner H, Schausten B, Shi Y, Thörle-Pospiech P, Torres T, Traut T, Trautmann N, Türler A, Ward A, Ward DE, Wiehl N. 2016. Recoil-α-fission and recoil-α-α-fission events observed in the reaction 48Ca + 243Am. Nuclear Physics, Section A. 953:117-138. https://doi.org/10.1016/j.nuclphysa.2016.04.025

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Forsberg, U. ; Rudolph, D. ; Andersson, L. L. ; Di Nitto, A. ; Düllmann, Ch E. ; Fahlander, C. ; Gates, J. M. ; Golubev, P. ; Gregorich, K. E. ; Gross, C. J. ; Herzberg, R. D. ; Heßberger, F. P. ; Khuyagbaatar, J. ; Kratz, J. V. ; Rykaczewski, K. ; Sarmiento, L. G. ; Schädel, M. ; Yakushev, A. ; Åberg, Sven ; Ackermann, D. ; Block, M. ; Brand, H. ; Carlsson, Gillis ; Cox, D. ; Derkx, X. ; Dobaczewski, J. ; Eberhardt, K. ; Even, J. ; Gerl, J. ; Jäger, E. ; Kindler, B. ; Krier, J. ; Kojouharov, I. ; Kurz, N. ; Lommel, B. ; Mistry, A. ; Mokry, C. ; Nazarewicz, W. ; Nitsche, H. ; Omtvedt, J. P. ; Papadakis, P. ; Ragnarsson, I. ; Runke, J. ; Schaffner, H. ; Schausten, B. ; Shi, Yue ; Thörle-Pospiech, P. ; Torres, T. ; Traut, T. ; Trautmann, N. ; Türler, A. ; Ward, A. ; Ward, D. E. ; Wiehl, N. / Recoil-α-fission and recoil-α-α-fission events observed in the reaction 48Ca + 243Am. In: Nuclear Physics, Section A. 2016 ; Vol. 953. pp. 117-138.

RIS

TY - JOUR

T1 - Recoil-α-fission and recoil-α-α-fission events observed in the reaction 48Ca + 243Am

AU - Forsberg, U.

AU - Rudolph, D.

AU - Andersson, L. L.

AU - Di Nitto, A.

AU - Düllmann, Ch E.

AU - Fahlander, C.

AU - Gates, J. M.

AU - Golubev, P.

AU - Gregorich, K. E.

AU - Gross, C. J.

AU - Herzberg, R. D.

AU - Heßberger, F. P.

AU - Khuyagbaatar, J.

AU - Kratz, J. V.

AU - Rykaczewski, K.

AU - Sarmiento, L. G.

AU - Schädel, M.

AU - Yakushev, A.

AU - Åberg, Sven

AU - Ackermann, D.

AU - Block, M.

AU - Brand, H.

AU - Carlsson, Gillis

AU - Cox, D.

AU - Derkx, X.

AU - Dobaczewski, J.

AU - Eberhardt, K.

AU - Even, J.

AU - Gerl, J.

AU - Jäger, E.

AU - Kindler, B.

AU - Krier, J.

AU - Kojouharov, I.

AU - Kurz, N.

AU - Lommel, B.

AU - Mistry, A.

AU - Mokry, C.

AU - Nazarewicz, W.

AU - Nitsche, H.

AU - Omtvedt, J. P.

AU - Papadakis, P.

AU - Ragnarsson, I.

AU - Runke, J.

AU - Schaffner, H.

AU - Schausten, B.

AU - Shi, Yue

AU - Thörle-Pospiech, P.

AU - Torres, T.

AU - Traut, T.

AU - Trautmann, N.

AU - Türler, A.

AU - Ward, A.

AU - Ward, D. E.

AU - Wiehl, N.

PY - 2016/9/1

Y1 - 2016/9/1

N2 - Products of the fusion-evaporation reaction 48Ca + 243Am were studied with the TASISpec set-up at the gas-filled separator TASCA at the GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany. Amongst the detected thirty correlated α-decay chains associated with the production of element Z=115, two recoil-α-fission and five recoil-α-α-fission events were observed. The latter five chains are similar to four such events reported from experiments performed at the Dubna gas-filled separator, and three such events reported from an experiment at the Berkeley gas-filled separator. The four chains observed at the Dubna gas-filled separator were assigned to start from the 2n-evaporation channel 289115 due to the fact that these recoil-α-α-fission events were observed only at low excitation energies. Contrary to this interpretation, we suggest that some of these recoil-α-α-fission decay chains, as well as some of the recoil-α-α-fission and recoil-α-fission decay chains reported from Berkeley and in this article, start from the 3n-evaporation channel 288115.

AB - Products of the fusion-evaporation reaction 48Ca + 243Am were studied with the TASISpec set-up at the gas-filled separator TASCA at the GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany. Amongst the detected thirty correlated α-decay chains associated with the production of element Z=115, two recoil-α-fission and five recoil-α-α-fission events were observed. The latter five chains are similar to four such events reported from experiments performed at the Dubna gas-filled separator, and three such events reported from an experiment at the Berkeley gas-filled separator. The four chains observed at the Dubna gas-filled separator were assigned to start from the 2n-evaporation channel 289115 due to the fact that these recoil-α-α-fission events were observed only at low excitation energies. Contrary to this interpretation, we suggest that some of these recoil-α-α-fission decay chains, as well as some of the recoil-α-α-fission and recoil-α-fission decay chains reported from Berkeley and in this article, start from the 3n-evaporation channel 288115.

KW - Element 115

KW - Spontaneous fission

KW - Superheavy elements

KW - Uup

KW - α decay

UR - http://www.scopus.com/inward/record.url?scp=84965126643&partnerID=8YFLogxK

U2 - 10.1016/j.nuclphysa.2016.04.025

DO - 10.1016/j.nuclphysa.2016.04.025

M3 - Article

VL - 953

SP - 117

EP - 138

JO - Nuclear Physics A

T2 - Nuclear Physics A

JF - Nuclear Physics A

SN - 0375-9474

ER -