Fission barrier of superheavy nuclei and persistence of shell effects at high spin: Cases of No 254 and Th 220

Greg Henning, T. L. Khoo, A. Lopez-Martens, D. Seweryniak, M. Alcorta, M. Asai, B. B. Back, P. F. Bertone, D. Boilley, M. P. Carpenter, C. J. Chiara, P. Chowdhury, B. Gall, P. T. Greenlees, G. Gürdal, K. Hauschild, A. Heinz, C. R. Hoffman, R. V.F. Janssens, A. V. KarpovB. P. Kay, F. G. Kondev, S. Lakshmi, T. Lauritsen, C. J. Lister, E. A. McCutchan, C. Nair, J. Piot, D. Potterveld, P. Reiter, A. M. Rogers, N. Rowley, S. Zhu

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

We report on the first measurement of the fission barrier height in a heavy shell-stabilized nucleus. The fission barrier height of No254 is measured to be Bf=6.0±0.5 MeV at spin 15 and, by extrapolation, Bf=6.6±0.9 MeV at spin 0. This information is deduced from the measured distribution of entry points in the excitation energy versus spin plane. The same measurement is performed for Th220 and only a lower limit of the fission barrier height can be determined: Bf(I)>8 MeV. Comparisons with theoretical fission barriers test theories that predict properties of superheavy elements.

Original languageEnglish
Article number262505
JournalPhysical Review Letters
Volume113
Issue number26
DOIs
Publication statusPublished - Dec 30 2014
Externally publishedYes

Fingerprint

fission
nuclei
entry
extrapolation
excitation
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Fission barrier of superheavy nuclei and persistence of shell effects at high spin : Cases of No 254 and Th 220. / Henning, Greg; Khoo, T. L.; Lopez-Martens, A.; Seweryniak, D.; Alcorta, M.; Asai, M.; Back, B. B.; Bertone, P. F.; Boilley, D.; Carpenter, M. P.; Chiara, C. J.; Chowdhury, P.; Gall, B.; Greenlees, P. T.; Gürdal, G.; Hauschild, K.; Heinz, A.; Hoffman, C. R.; Janssens, R. V.F.; Karpov, A. V.; Kay, B. P.; Kondev, F. G.; Lakshmi, S.; Lauritsen, T.; Lister, C. J.; McCutchan, E. A.; Nair, C.; Piot, J.; Potterveld, D.; Reiter, P.; Rogers, A. M.; Rowley, N.; Zhu, S.

In: Physical Review Letters, Vol. 113, No. 26, 262505, 30.12.2014.

Research output: Contribution to journalArticle

Henning, G, Khoo, TL, Lopez-Martens, A, Seweryniak, D, Alcorta, M, Asai, M, Back, BB, Bertone, PF, Boilley, D, Carpenter, MP, Chiara, CJ, Chowdhury, P, Gall, B, Greenlees, PT, Gürdal, G, Hauschild, K, Heinz, A, Hoffman, CR, Janssens, RVF, Karpov, AV, Kay, BP, Kondev, FG, Lakshmi, S, Lauritsen, T, Lister, CJ, McCutchan, EA, Nair, C, Piot, J, Potterveld, D, Reiter, P, Rogers, AM, Rowley, N & Zhu, S 2014, 'Fission barrier of superheavy nuclei and persistence of shell effects at high spin: Cases of No 254 and Th 220', Physical Review Letters, vol. 113, no. 26, 262505. https://doi.org/10.1103/PhysRevLett.113.262505
Henning, Greg ; Khoo, T. L. ; Lopez-Martens, A. ; Seweryniak, D. ; Alcorta, M. ; Asai, M. ; Back, B. B. ; Bertone, P. F. ; Boilley, D. ; Carpenter, M. P. ; Chiara, C. J. ; Chowdhury, P. ; Gall, B. ; Greenlees, P. T. ; Gürdal, G. ; Hauschild, K. ; Heinz, A. ; Hoffman, C. R. ; Janssens, R. V.F. ; Karpov, A. V. ; Kay, B. P. ; Kondev, F. G. ; Lakshmi, S. ; Lauritsen, T. ; Lister, C. J. ; McCutchan, E. A. ; Nair, C. ; Piot, J. ; Potterveld, D. ; Reiter, P. ; Rogers, A. M. ; Rowley, N. ; Zhu, S. / Fission barrier of superheavy nuclei and persistence of shell effects at high spin : Cases of No 254 and Th 220. In: Physical Review Letters. 2014 ; Vol. 113, No. 26.
@article{5e56a63c7a4e404caa1a3954960e9b56,
title = "Fission barrier of superheavy nuclei and persistence of shell effects at high spin: Cases of No 254 and Th 220",
abstract = "We report on the first measurement of the fission barrier height in a heavy shell-stabilized nucleus. The fission barrier height of No254 is measured to be Bf=6.0±0.5 MeV at spin 15 and, by extrapolation, Bf=6.6±0.9 MeV at spin 0. This information is deduced from the measured distribution of entry points in the excitation energy versus spin plane. The same measurement is performed for Th220 and only a lower limit of the fission barrier height can be determined: Bf(I)>8 MeV. Comparisons with theoretical fission barriers test theories that predict properties of superheavy elements.",
author = "Greg Henning and Khoo, {T. L.} and A. Lopez-Martens and D. Seweryniak and M. Alcorta and M. Asai and Back, {B. B.} and Bertone, {P. F.} and D. Boilley and Carpenter, {M. P.} and Chiara, {C. J.} and P. Chowdhury and B. Gall and Greenlees, {P. T.} and G. G{\"u}rdal and K. Hauschild and A. Heinz and Hoffman, {C. R.} and Janssens, {R. V.F.} and Karpov, {A. V.} and Kay, {B. P.} and Kondev, {F. G.} and S. Lakshmi and T. Lauritsen and Lister, {C. J.} and McCutchan, {E. A.} and C. Nair and J. Piot and D. Potterveld and P. Reiter and Rogers, {A. M.} and N. Rowley and S. Zhu",
year = "2014",
month = "12",
day = "30",
doi = "10.1103/PhysRevLett.113.262505",
language = "English",
volume = "113",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "26",

}

TY - JOUR

T1 - Fission barrier of superheavy nuclei and persistence of shell effects at high spin

T2 - Cases of No 254 and Th 220

AU - Henning, Greg

AU - Khoo, T. L.

AU - Lopez-Martens, A.

AU - Seweryniak, D.

AU - Alcorta, M.

AU - Asai, M.

AU - Back, B. B.

AU - Bertone, P. F.

AU - Boilley, D.

AU - Carpenter, M. P.

AU - Chiara, C. J.

AU - Chowdhury, P.

AU - Gall, B.

AU - Greenlees, P. T.

AU - Gürdal, G.

AU - Hauschild, K.

AU - Heinz, A.

AU - Hoffman, C. R.

AU - Janssens, R. V.F.

AU - Karpov, A. V.

AU - Kay, B. P.

AU - Kondev, F. G.

AU - Lakshmi, S.

AU - Lauritsen, T.

AU - Lister, C. J.

AU - McCutchan, E. A.

AU - Nair, C.

AU - Piot, J.

AU - Potterveld, D.

AU - Reiter, P.

AU - Rogers, A. M.

AU - Rowley, N.

AU - Zhu, S.

PY - 2014/12/30

Y1 - 2014/12/30

N2 - We report on the first measurement of the fission barrier height in a heavy shell-stabilized nucleus. The fission barrier height of No254 is measured to be Bf=6.0±0.5 MeV at spin 15 and, by extrapolation, Bf=6.6±0.9 MeV at spin 0. This information is deduced from the measured distribution of entry points in the excitation energy versus spin plane. The same measurement is performed for Th220 and only a lower limit of the fission barrier height can be determined: Bf(I)>8 MeV. Comparisons with theoretical fission barriers test theories that predict properties of superheavy elements.

AB - We report on the first measurement of the fission barrier height in a heavy shell-stabilized nucleus. The fission barrier height of No254 is measured to be Bf=6.0±0.5 MeV at spin 15 and, by extrapolation, Bf=6.6±0.9 MeV at spin 0. This information is deduced from the measured distribution of entry points in the excitation energy versus spin plane. The same measurement is performed for Th220 and only a lower limit of the fission barrier height can be determined: Bf(I)>8 MeV. Comparisons with theoretical fission barriers test theories that predict properties of superheavy elements.

UR - http://www.scopus.com/inward/record.url?scp=84947111348&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84947111348&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.113.262505

DO - 10.1103/PhysRevLett.113.262505

M3 - Article

AN - SCOPUS:84947111348

VL - 113

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 26

M1 - 262505

ER -