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., Guerdal, 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. and Zhu, S. (2014). Fission Barrier of Superheavy Nuclei and Persistence of Shell Effects at High Spin: Cases of No-254 and Th-220. Phys. Rev. Lett., 113 (26). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

We report on the first measurement of the fission barrier height in a heavy shell-stabilized nucleus. The fission barrier height of No-254 is measured to be B-f = 6.0 +/- 0.5 MeV at spin 15 (h) over bar and, by extrapolation, B-f = 6.6 +/- 0.9 MeV at spin 0 (h) over bar. This information is deduced from the measured distribution of entry points in the excitation energy versus spin plane. The same measurement is performed for Th-220 and only a lower limit of the fission barrier height can be determined: B-f (I) > 8 MeV. Comparisons with theoretical fission barriers test theories that predict properties of superheavy elements.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Henning, GregUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Khoo, T. L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lopez-Martens, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Seweryniak, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Alcorta, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Asai, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Back, B. B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bertone, P. F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Boilley, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Carpenter, M. P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chiara, C. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chowdhury, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gall, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Greenlees, P. T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Guerdal, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hauschild, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Heinz, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hoffman, C. R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Janssens, R. V. F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Karpov, A. V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kay, B. P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kondev, F. G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lakshmi, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lauritsen, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lister, C. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
McCutchan, E. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nair, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Piot, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Potterveld, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Reiter, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rogers, A. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rowley, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhu, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-419923
DOI: 10.1103/PhysRevLett.113.262505
Journal or Publication Title: Phys. Rev. Lett.
Volume: 113
Number: 26
Date: 2014
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 1079-7114
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
MECHANISM; ISOMERS; STATES; BANDMultiple languages
Physics, MultidisciplinaryMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/41992

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