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

Authors :
Forsberg, U.
Rudolph, D.
Andersson, L. -L.
Di Nitto, A.
D��llmann, Ch. E.
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.
Sch��del, M.
Yakushev, A.
��berg, S.
Ackermann, D.
Block, M.
Brand, H.
Carlsson, B. G.
Cox, D.
Derkx, X.
Dobaczewski, J.
Eberhardt, K.
Even, J.
Fahlander, C.
Gerl, J.
J��ger, 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, Y.
Th��rle-Pospiech, P.
Torres, T.
Traut, T.
Trautmann, N.
T��rler, A.
Ward, A.
Ward, D. E.
Wiehl, N.
Research unit Nuclear & Hadron Physics
Source :
NUCLEAR PHYSICS A, Nuclear Physics A, 953, 117-138. ELSEVIER SCIENCE BV
Publication Year :
2016

Abstract

Products of the fusion-evaporation reaction Ca-48 + Am-243 were studied with the TASISpec set-up at the gas-filled separator TASCA at the GSI Helmholtzzentrum f\"ur Schwerionenforschung. Amongst the detected thirty correlated alpha-decay chains associated with the production of element Z=115, two recoil-alpha-fission and five recoil-alpha-alpha-fission events were observed. The latter are similar to four such events reported from experiments performed at the Dubna gas-filled separator. Contrary to their interpretation, we propose an alternative view, namely to assign eight of these eleven decay chains of recoil-alpha(-alpha)-fission type to start from the 3n-evaporation channel 115-288. The other three decay chains remain viable candidates for the 2n-evaporation channel 115-289.<br />Comment: 15 pages. Article: 9 pages, 3 tables, 3 figures. Supplemental material: 6 pages, 7 tables, 1 figure. Submitted to PRC

Details

Language :
English
ISSN :
03759474
Database :
OpenAIRE
Journal :
NUCLEAR PHYSICS A, Nuclear Physics A, 953, 117-138. ELSEVIER SCIENCE BV
Accession number :
edsair.doi.dedup.....753053d5bbfa53e5e750499de57d5a28