Remarks on the fission barriers of super-heavy nuclei

S. Hofmann; S. Heinz; R. Mann; J. Maurer; G. Münzenberg; S. Antalic; W. Barth; L. Dahl; K. Eberhardt; R. Grzywacz; J. H. Hamilton; R. A. Henderson; J. M. Kenneally; B. Kindler; I. Kojouharov; R. Lang; B. Lommel; K. Miernik; D. Miller; K. J. Moody; K. Morita; K. Nishio; A. G. Popeko; J. B. Roberto; J. Runke; K. P. Rykaczewski; C. Scheidenberger; D. A. Shaughnessy; M. A. Stoyer; P. Thörle-Pospiech; K. Tinschert; N. Trautmann; J. Uusitalo; A. V. Yeremin

doi:10.1140/epja/i2016-16116-0

Remarks on the fission barriers of super-heavy nuclei

S. Hofmann, S. Heinz, R. Mann, J. Maurer, G. Münzenberg, S. Antalic, W. Barth, L. Dahl, K. Eberhardt, R. Grzywacz, J. H. Hamilton, R. A. Henderson, J. M. Kenneally, B. Kindler, I. Kojouharov, R. Lang, B. Lommel, K. Miernik, D. Miller, K. J. MoodyK. Morita, K. Nishio, A. G. Popeko, J. B. Roberto, J. Runke, K. P. Rykaczewski, C. Scheidenberger, D. A. Shaughnessy, M. A. Stoyer, P. Thörle-Pospiech, K. Tinschert, N. Trautmann, J. Uusitalo, A. V. Yeremin

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Abstract

Shell-correction energies of super-heavy nuclei are approximated by using (Formula presented.) values of measured decay chains. Five decay chains were analyzed, which start at the isotopes ²⁸⁵Fl, ²⁹⁴118, ²⁹¹Lv, ²⁹²Lv and ²⁹³Lv. The data are compared with predictions of macroscopic-microscopic models. Fission barriers are estimated that can be used to eliminate uncertainties in partial fission half-lives and in calculations of evaporation-residue cross-sections. In that calculations, fission probability of the compound nucleus is a major factor contributing to the total cross-section. The data also provide constraints on the cross-sections of capture and quasi-fission in the entrance channel of the fusion reaction. Arguments are presented that fusion reactions for synthesis of isotopes of elements 118 and 120 may have higher cross-sections than assumed so far.

Original language	English
Article number	116
Journal	European Physical Journal A
Volume	52
Issue number	4
DOIs	https://doi.org/10.1140/epja/i2016-16116-0
State	Published - Apr 1 2016

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Hofmann, S., Heinz, S., Mann, R., Maurer, J., Münzenberg, G., Antalic, S., Barth, W., Dahl, L., Eberhardt, K., Grzywacz, R., Hamilton, J. H., Henderson, R. A., Kenneally, J. M., Kindler, B., Kojouharov, I., Lang, R., Lommel, B., Miernik, K., Miller, D., ... Yeremin, A. V. (2016). Remarks on the fission barriers of super-heavy nuclei. European Physical Journal A, 52(4), Article 116. https://doi.org/10.1140/epja/i2016-16116-0

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title = "Remarks on the fission barriers of super-heavy nuclei",

abstract = "Shell-correction energies of super-heavy nuclei are approximated by using (Formula presented.) values of measured decay chains. Five decay chains were analyzed, which start at the isotopes 285Fl, 294118, 291Lv, 292Lv and 293Lv. The data are compared with predictions of macroscopic-microscopic models. Fission barriers are estimated that can be used to eliminate uncertainties in partial fission half-lives and in calculations of evaporation-residue cross-sections. In that calculations, fission probability of the compound nucleus is a major factor contributing to the total cross-section. The data also provide constraints on the cross-sections of capture and quasi-fission in the entrance channel of the fusion reaction. Arguments are presented that fusion reactions for synthesis of isotopes of elements 118 and 120 may have higher cross-sections than assumed so far.",

author = "S. Hofmann and S. Heinz and R. Mann and J. Maurer and G. M{\"u}nzenberg and S. Antalic and W. Barth and L. Dahl and K. Eberhardt and R. Grzywacz and Hamilton, {J. H.} and Henderson, {R. A.} and Kenneally, {J. M.} and B. Kindler and I. Kojouharov and R. Lang and B. Lommel and K. Miernik and D. Miller and Moody, {K. J.} and K. Morita and K. Nishio and Popeko, {A. G.} and Roberto, {J. B.} and J. Runke and Rykaczewski, {K. P.} and C. Scheidenberger and Shaughnessy, {D. A.} and Stoyer, {M. A.} and P. Th{\"o}rle-Pospiech and K. Tinschert and N. Trautmann and J. Uusitalo and Yeremin, {A. V.}",

note = "Publisher Copyright: {\textcopyright} 2016, SIF, Springer-Verlag Berlin Heidelberg.",

year = "2016",

month = apr,

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doi = "10.1140/epja/i2016-16116-0",

language = "English",

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Hofmann, S, Heinz, S, Mann, R, Maurer, J, Münzenberg, G, Antalic, S, Barth, W, Dahl, L, Eberhardt, K, Grzywacz, R, Hamilton, JH, Henderson, RA, Kenneally, JM, Kindler, B, Kojouharov, I, Lang, R, Lommel, B, Miernik, K, Miller, D, Moody, KJ, Morita, K, Nishio, K, Popeko, AG, Roberto, JB, Runke, J, Rykaczewski, KP, Scheidenberger, C, Shaughnessy, DA, Stoyer, MA, Thörle-Pospiech, P, Tinschert, K, Trautmann, N, Uusitalo, J & Yeremin, AV 2016, 'Remarks on the fission barriers of super-heavy nuclei', European Physical Journal A, vol. 52, no. 4, 116. https://doi.org/10.1140/epja/i2016-16116-0

TY - JOUR

T1 - Remarks on the fission barriers of super-heavy nuclei

AU - Hofmann, S.

AU - Heinz, S.

AU - Mann, R.

AU - Maurer, J.

AU - Münzenberg, G.

AU - Antalic, S.

AU - Barth, W.

AU - Dahl, L.

AU - Eberhardt, K.

AU - Grzywacz, R.

AU - Hamilton, J. H.

AU - Henderson, R. A.

AU - Kenneally, J. M.

AU - Kindler, B.

AU - Kojouharov, I.

AU - Lang, R.

AU - Lommel, B.

AU - Miernik, K.

AU - Miller, D.

AU - Moody, K. J.

AU - Morita, K.

AU - Nishio, K.

AU - Popeko, A. G.

AU - Roberto, J. B.

AU - Runke, J.

AU - Rykaczewski, K. P.

AU - Scheidenberger, C.

AU - Shaughnessy, D. A.

AU - Stoyer, M. A.

AU - Thörle-Pospiech, P.

AU - Tinschert, K.

AU - Trautmann, N.

AU - Uusitalo, J.

AU - Yeremin, A. V.

PY - 2016/4/1

Y1 - 2016/4/1

N2 - Shell-correction energies of super-heavy nuclei are approximated by using (Formula presented.) values of measured decay chains. Five decay chains were analyzed, which start at the isotopes 285Fl, 294118, 291Lv, 292Lv and 293Lv. The data are compared with predictions of macroscopic-microscopic models. Fission barriers are estimated that can be used to eliminate uncertainties in partial fission half-lives and in calculations of evaporation-residue cross-sections. In that calculations, fission probability of the compound nucleus is a major factor contributing to the total cross-section. The data also provide constraints on the cross-sections of capture and quasi-fission in the entrance channel of the fusion reaction. Arguments are presented that fusion reactions for synthesis of isotopes of elements 118 and 120 may have higher cross-sections than assumed so far.

AB - Shell-correction energies of super-heavy nuclei are approximated by using (Formula presented.) values of measured decay chains. Five decay chains were analyzed, which start at the isotopes 285Fl, 294118, 291Lv, 292Lv and 293Lv. The data are compared with predictions of macroscopic-microscopic models. Fission barriers are estimated that can be used to eliminate uncertainties in partial fission half-lives and in calculations of evaporation-residue cross-sections. In that calculations, fission probability of the compound nucleus is a major factor contributing to the total cross-section. The data also provide constraints on the cross-sections of capture and quasi-fission in the entrance channel of the fusion reaction. Arguments are presented that fusion reactions for synthesis of isotopes of elements 118 and 120 may have higher cross-sections than assumed so far.

UR - http://www.scopus.com/inward/record.url?scp=84964434439&partnerID=8YFLogxK

U2 - 10.1140/epja/i2016-16116-0

DO - 10.1140/epja/i2016-16116-0

M3 - Article

AN - SCOPUS:84964434439

SN - 1434-6001

VL - 52

JO - European Physical Journal A

JF - European Physical Journal A

IS - 4

M1 - 116

ER -

Remarks on the fission barriers of super-heavy nuclei

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