Spectroscopy along flerovium decay chains. III. Details on experiment, analysis, 282Cn, and spontaneous fission branches

A. Såmark-Roth; D. M. Cox; D. Rudolph; L. G. Sarmiento; M. Albertsson; B. G. Carlsson; J. L. Egido; P. Golubev; J. Heery; A. Yakushev; S. Åberg; H. M. Albers; M. Block; H. Brand; T. Calverley; R. Cantemir; R. M. Clark; Ch. E. Düllmann; J. Eberth; C. Fahlander; U. Forsberg; J. M. Gates; F. Giacoppo; M. Götz; S. Götz; R.-D. Herzberg; Y. Hrabar; E. Jäger; D. Judson; J. Khuyagbaatar; B. Kindler; I. Kojouharov; J. V. Kratz; J. Krier; N. Kurz; L. Lens; J. Ljungberg; B. Lommel; J. Louko; C.-C. Meyer; A. Mistry; C. Mokry; P. Papadakis; E. Parr; J. L. Pore; I. Ragnarsson; J. Runke; M. Schädel; H. Schaffner; B. Schausten; D. A. Shaughnessy; P. Thörle-Pospiech; N. Trautmann; J. Uusitalo

doi:10.1103/PhysRevC.107.024301

Spectroscopy along flerovium decay chains. III. Details on experiment, analysis, ²⁸²Cn, and spontaneous fission branches

A. Såmark-Roth, D. M. Cox, D. Rudolph, L. G. Sarmiento, M. Albertsson, B. G. Carlsson, J. L. Egido, P. Golubev, J. Heery, A. Yakushev, S. Åberg, H. M. Albers, M. Block, H. Brand, T. Calverley, R. Cantemir, R. M. Clark, Ch. E. Düllmann, J. Eberth, C. FahlanderU. Forsberg, J. M. Gates, F. Giacoppo, M. Götz, S. Götz, R.-D. Herzberg, Y. Hrabar, E. Jäger, D. Judson, J. Khuyagbaatar, B. Kindler, I. Kojouharov, J. V. Kratz, J. Krier, N. Kurz, L. Lens, J. Ljungberg, B. Lommel, J. Louko, C.-C. Meyer, A. Mistry, C. Mokry, P. Papadakis, E. Parr, J. L. Pore, I. Ragnarsson, J. Runke, M. Schädel, H. Schaffner, B. Schausten, D. A. Shaughnessy, P. Thörle-Pospiech, N. Trautmann, J. Uusitalo

Mathematical Physics

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Abstract

Flerovium isotopes (element Z = 114) were produced in the fusion-evaporation reactions ⁴⁸Ca+^242,244Pu and studied with an upgraded TASISpec decay station placed in the focal plane of the gas-filled separator TASCA at the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt, Germany. Twenty-nine flerovium decay chains were identified by means of correlated implantation, α decay, and spontaneous fission events. Data analysis aspects and statistical assessments, primarily based on measured rates of various events, which laid the foundation for the comprehensive spectroscopic information on the flerovium decay chains, are presented in detail. Various decay scenarios of an excited state observed in ²⁸²Cn are examined in depth with the help of GEANT4 simulations and assessed by predictions of beyond mean-field calculations including triaxial shape degrees of freedom. Previous, revised, and newly derived fission probabilities of even-even superheavy nuclei are compared with various theoretical predictions.

Original language	English
Article number	024301
Number of pages	12
Journal	Physical Review C
Volume	107
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.107.024301
Publication status	Published - 2023 Feb 6

Subject classification (UKÄ)

Subatomic Physics

Free keywords

Superheavy elements
Nuclear spectroscopy
Alpha decay
Spontaneous fission
E0 decay
Mean field theory

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PhysRevC.107.024301Final published version, 740 KBLicence: CC BY

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Såmark-Roth, A., Cox, D. M., Rudolph, D., Sarmiento, L. G., Albertsson, M., Carlsson, B. G., Egido, J. L., Golubev, P., Heery, J., Yakushev, A., Åberg, S., Albers, H. M., Block, M., Brand, H., Calverley, T., Cantemir, R., Clark, R. M., Düllmann, C. E., Eberth, J., ... Uusitalo, J. (2023). Spectroscopy along flerovium decay chains. III. Details on experiment, analysis, ²⁸²Cn, and spontaneous fission branches. Physical Review C, 107(2), Article 024301. https://doi.org/10.1103/PhysRevC.107.024301

@article{7bdb9e8a9ff849fd9ecb8126a22b3154,

title = "Spectroscopy along flerovium decay chains. III. Details on experiment, analysis, 282Cn, and spontaneous fission branches",

abstract = "Flerovium isotopes (element Z = 114) were produced in the fusion-evaporation reactions 48Ca+242,244Pu and studied with an upgraded TASISpec decay station placed in the focal plane of the gas-filled separator TASCA at the GSI Helmholtzzentrum f{\"u}r Schwerionenforschung in Darmstadt, Germany. Twenty-nine flerovium decay chains were identified by means of correlated implantation, α decay, and spontaneous fission events. Data analysis aspects and statistical assessments, primarily based on measured rates of various events, which laid the foundation for the comprehensive spectroscopic information on the flerovium decay chains, are presented in detail. Various decay scenarios of an excited state observed in 282Cn are examined in depth with the help of GEANT4 simulations and assessed by predictions of beyond mean-field calculations including triaxial shape degrees of freedom. Previous, revised, and newly derived fission probabilities of even-even superheavy nuclei are compared with various theoretical predictions.",

keywords = "Superheavy elements, Nuclear spectroscopy, Alpha decay, Spontaneous fission, E0 decay, Mean field theory",

author = "A. S{\aa}mark-Roth and Cox, {D. M.} and D. Rudolph and Sarmiento, {L. G.} and M. Albertsson and Carlsson, {B. G.} and Egido, {J. L.} and P. Golubev and J. Heery and A. Yakushev and S. {\AA}berg and Albers, {H. M.} and M. Block and H. Brand and T. Calverley and R. Cantemir and Clark, {R. M.} and D{\"u}llmann, {Ch. E.} and J. Eberth and C. Fahlander and U. Forsberg and Gates, {J. M.} and F. Giacoppo and M. G{\"o}tz and S. G{\"o}tz and R.-D. Herzberg and Y. Hrabar and E. J{\"a}ger and D. Judson and J. Khuyagbaatar and B. Kindler and I. Kojouharov and Kratz, {J. V.} and J. Krier and N. Kurz and L. Lens and J. Ljungberg and B. Lommel and J. Louko and C.-C. Meyer and A. Mistry and C. Mokry and P. Papadakis and E. Parr and Pore, {J. L.} and I. Ragnarsson and J. Runke and M. Sch{\"a}del and H. Schaffner and B. Schausten and Shaughnessy, {D. A.} and P. Th{\"o}rle-Pospiech and N. Trautmann and J. Uusitalo",

year = "2023",

month = feb,

day = "6",

doi = "10.1103/PhysRevC.107.024301",

language = "English",

volume = "107",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "2",

}

Såmark-Roth, A, Cox, DM, Rudolph, D , Sarmiento, LG , Albertsson, M , Carlsson, BG, Egido, JL, Golubev, P, Heery, J, Yakushev, A, Åberg, S, Albers, HM, Block, M, Brand, H, Calverley, T, Cantemir, R, Clark, RM, Düllmann, CE, Eberth, J, Fahlander, C, Forsberg, U, Gates, JM, Giacoppo, F, Götz, M, Götz, S, Herzberg, R-D, Hrabar, Y, Jäger, E, Judson, D, Khuyagbaatar, J, Kindler, B, Kojouharov, I, Kratz, JV, Krier, J, Kurz, N, Lens, L, Ljungberg, J, Lommel, B, Louko, J, Meyer, C-C, Mistry, A, Mokry, C, Papadakis, P, Parr, E, Pore, JL, Ragnarsson, I, Runke, J, Schädel, M, Schaffner, H, Schausten, B, Shaughnessy, DA, Thörle-Pospiech, P, Trautmann, N & Uusitalo, J 2023, 'Spectroscopy along flerovium decay chains. III. Details on experiment, analysis, ²⁸²Cn, and spontaneous fission branches', Physical Review C, vol. 107, no. 2, 024301. https://doi.org/10.1103/PhysRevC.107.024301

TY - JOUR

T1 - Spectroscopy along flerovium decay chains. III. Details on experiment, analysis, 282Cn, and spontaneous fission branches

AU - Såmark-Roth, A.

AU - Cox, D. M.

AU - Rudolph, D.

AU - Sarmiento, L. G.

AU - Albertsson, M.

AU - Carlsson, B. G.

AU - Egido, J. L.

AU - Golubev, P.

AU - Heery, J.

AU - Yakushev, A.

AU - Åberg, S.

AU - Albers, H. M.

AU - Block, M.

AU - Brand, H.

AU - Calverley, T.

AU - Cantemir, R.

AU - Clark, R. M.

AU - Düllmann, Ch. E.

AU - Eberth, J.

AU - Fahlander, C.

AU - Forsberg, U.

AU - Gates, J. M.

AU - Giacoppo, F.

AU - Götz, M.

AU - Götz, S.

AU - Herzberg, R.-D.

AU - Hrabar, Y.

AU - Jäger, E.

AU - Judson, D.

AU - Khuyagbaatar, J.

AU - Kindler, B.

AU - Kojouharov, I.

AU - Kratz, J. V.

AU - Krier, J.

AU - Kurz, N.

AU - Lens, L.

AU - Ljungberg, J.

AU - Lommel, B.

AU - Louko, J.

AU - Meyer, C.-C.

AU - Mistry, A.

AU - Mokry, C.

AU - Papadakis, P.

AU - Parr, E.

AU - Pore, J. L.

AU - Ragnarsson, I.

AU - Runke, J.

AU - Schädel, M.

AU - Schaffner, H.

AU - Schausten, B.

AU - Shaughnessy, D. A.

AU - Thörle-Pospiech, P.

AU - Trautmann, N.

AU - Uusitalo, J.

PY - 2023/2/6

Y1 - 2023/2/6

N2 - Flerovium isotopes (element Z = 114) were produced in the fusion-evaporation reactions 48Ca+242,244Pu and studied with an upgraded TASISpec decay station placed in the focal plane of the gas-filled separator TASCA at the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt, Germany. Twenty-nine flerovium decay chains were identified by means of correlated implantation, α decay, and spontaneous fission events. Data analysis aspects and statistical assessments, primarily based on measured rates of various events, which laid the foundation for the comprehensive spectroscopic information on the flerovium decay chains, are presented in detail. Various decay scenarios of an excited state observed in 282Cn are examined in depth with the help of GEANT4 simulations and assessed by predictions of beyond mean-field calculations including triaxial shape degrees of freedom. Previous, revised, and newly derived fission probabilities of even-even superheavy nuclei are compared with various theoretical predictions.

AB - Flerovium isotopes (element Z = 114) were produced in the fusion-evaporation reactions 48Ca+242,244Pu and studied with an upgraded TASISpec decay station placed in the focal plane of the gas-filled separator TASCA at the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt, Germany. Twenty-nine flerovium decay chains were identified by means of correlated implantation, α decay, and spontaneous fission events. Data analysis aspects and statistical assessments, primarily based on measured rates of various events, which laid the foundation for the comprehensive spectroscopic information on the flerovium decay chains, are presented in detail. Various decay scenarios of an excited state observed in 282Cn are examined in depth with the help of GEANT4 simulations and assessed by predictions of beyond mean-field calculations including triaxial shape degrees of freedom. Previous, revised, and newly derived fission probabilities of even-even superheavy nuclei are compared with various theoretical predictions.

KW - Superheavy elements

KW - Nuclear spectroscopy

KW - Alpha decay

KW - Spontaneous fission

KW - E0 decay

KW - Mean field theory

UR - https://journals.aps.org/prc/abstract/10.1103/PhysRevC.107.024301

U2 - 10.1103/PhysRevC.107.024301

DO - 10.1103/PhysRevC.107.024301

M3 - Article

SN - 2469-9985

VL - 107

JO - Physical Review C

JF - Physical Review C

IS - 2

M1 - 024301

ER -

Spectroscopy along flerovium decay chains. III. Details on experiment, analysis, ²⁸²Cn, and spontaneous fission branches

Abstract

Subject classification (UKÄ)

Free keywords

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