Stability and synthesis of superheavy elements: Fighting the battle against fission – example of 254No

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

doi:10.1051/epjconf/201613103001

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Lopez-Martens, A., Henning, G., Khoo, T.L., Seweryniak, D., Alcorta, M., Asai, M., Back, B.B., Bertone, P., Boilley, D., Carpenter, M.P., Chiara, C.J., Chowdhury, P., Gall, B., Greenlees, P., Gurdal, G., Hauschild, K., Heinz, A., Hoffman, C.R., Janssens, R.V.F., . . . Zhu, S. (2016). Stability and synthesis of superheavy elements: Fighting the battle against fission – example of 254No. In D. Rudolph (Ed.), Nobel Symposium NS 160 - Chemistry and Physics of Heavy and Superheavy Elements (Article 03001). EDP Sciences. EPJ Web of Conferences, 131. https://doi.org/10.1051/epjconf/201613103001

Päivämäärä

2016

Oppiaine

Kiihdytinlaboratorio Accelerator Laboratory

Tekijänoikeudet

Superheavy nuclei exist solely due to quantum shell effects, which create a pocket in the potential-energy surface of the nucleus, thus providing a barrier against spontaneous fission. Determining the height of the fission barrier and its angular-momentum dependence is important to quantify the role that microscopic shell corrections play in enhancing and extending the limits of nuclear stability. In this talk, the first measurement of a fission barrier in the very heavy nucleus 254No will be presented.

Julkaisija

EDP Sciences

ISBN

978-2-7598-9011-8

Emojulkaisun ISBN

Konferenssi

Nobel Symposium

Kuuluu julkaisuun

Nobel Symposium NS 160 - Chemistry and Physics of Heavy and Superheavy Elements

ISSN Hae Julkaisufoorumista

2100-014X

Asiasanat

superheavy elements nuclear stability fission barrier nobelium

DOI

https://doi.org/10.1051/epjconf/201613103001

URI

http://urn.fi/URN:NBN:fi:jyu-201612054945

Julkaisu tutkimustietojärjestelmässä

https://converis.jyu.fi/converis/portal/detail/Publication/26358577

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Exploring the stability of super heavy elements: First Measurement of the Fission Barrier of 254No

Henning, G.; Lopez-Martens, A.; Khoo, T.L.; Seweryniak, D.; Alcorta, M.; Asai, M.; Back, B. B.; Bertone, P.; Boilley, D.; Carpenter, M. P.; Chiara, C. J.; Chowdhury, P.; Gall, B.; Greenlees, Paul; Gurdal, G.; Hauschild, K.; Heinz, A.; Hoffman, C. R.; Janssens, R. V. F.; Karpov, A. V.; Kay, B. P.; Kondev, F. G.; Lakshmi, S.; Lauristen, T.; Lister, C. J.; McCutchan, E. A.; Nair, C.; Piot, J.; Potterveld, D.; Reiter, P.; Rowley, N.; Rogers, A. M.; Zhu, S. (EDP Sciences, 2014)

Abstract. The gamma-ray multiplicity and total energy emitted by the heavy nucleus 254 No have been measured at 2 di erent beam energies. From these measurements, the initial distributions of spin I and excitation ...
Fission in the landscape of heaviest elements: Some recent examples

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The fission process still remains a main factor that determines the stability of the atomic nucleus of heaviest elements. Fission half-lives vary over a wide range, 10−19−1024 s. Present experimental techniques for ...
Fission Barrier of Superheavy Nuclei and Persistence of Shell Effects at High Spin: Cases of 254No and 220Th

Henning, Greg; Khoo, T. L.; Lopez-Martens, A.; Seweryniak, D.; Alcorta, M.; Asai, M.; Back, B. B.; Bertone, P. F.; Boilley, D.; Carpenter, P.; Chiara, C. J.; Chowdhury, P.; Gall, B.; Greenlees, Paul; 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. (American Physical Society, 2014)
Gamma rays as probe of fission and quasi-fission dynamics in the reaction 32S + 197Au near the Coulomb barrier

Pulcini, A.; Vardaci, E.; Kozulin, E.; Ashaduzzaman, M.; Borcea, C.; Bracco, A.; Brambilla, S.; Calinescu, S.; Camera, F.; Ciemala, M.; Canditiis, B. de; Dorvaux, O.; Harca, I. M.; Itkis, I.; Kirakosyan, V. V.; Knyazheva, G.; Kozulina, N.; Kolesov, I. V.; La Rana, G.; Maj, A.; Matea, I.; Novikov, K.; Petrone, C.; Quero, D.; Rath, P.; Saveleva, E.; Schmitt, C.; Sposito, G.; Stezowski, O.; Trzaska, Wladyslaw; Wilson, J. (IOP Publishing, 2018)

Compound nucleus fission and quasi-fission are both binary decay channels whose common properties make the experimental separation between them difficult. A way to achieve this separation could be to probe the angular ...
First prompt in-beam gamma-ray spectroscopy of a superheavy element: the 256Rf

Rubert, J.; Dorvaux, Olivier; Gall, Benoit; Greenlees, Paul; Asfari, Z.; Piot, J.; Andersson, L.; Asai, M.; Cox, D.M.; Dechery, F.; Grahn, Tuomas; Hauschild, Karl; Henning, G.; Herzan, Andrej; Herzberg, Rolf-Dietmar; Hessberger, Fritz Peter; Jakobsson, Ulrika; Jones, Peter; Julin, Rauno; Juutinen, Sakari; Ketelhut, Steffen; Khoo, T-L; Leino, Matti; Ljungvall, J.; Lopez-Martens, Araceli; Lozeva, R.; Nieminen, Päivi; Pakarinen, Janne; Papadakis, Philippos; Parr, E.; Peura, Pauli; Rahkila, Panu; Rinta-Antila, Sami; Ruotsalainen, Panu; Sandzelius, Mikael; Sarén, Jan; Scholey, Catherine; Seweryniak, D.; Sorri, Juha; Sulignano, B.; Theisen, Ch; Uusitalo, Juha; Venhart, Martin (Institute of Physics, 2013)

Using state-of-the-art γ-ray spectroscopic techniques, the first rotational band of a superheavy element, extending up to a spin of 20 ¯h, was discovered in the nucleus 256Rf. To perform such an experiment at the limits ...