Evolution of fission-fragment mass distributions in the neutron-deficient lead region

Lars Ghys; Andrei N Andreyev; Xavier Derkx; Hilde De Witte; Jytte Elseviers; Dima V Fedorov; Valentin N Fedosseev; Fritz P Hessberger; Zdenka Kalaninová; Ulli Köster; Valentina Liberati; Kara Marie Lynch; Mark Huyse; Bruce Allan Marsh; S Mitsuoka; Peter Möller; Y Nagame; K Nishio; S Ota; Dieter Pauwels; Robert D Page; Lucia Popescu; Deyan Radulov; Piet Van Duppen; Mustafa M Rajabali; J Randrup; Elisa Rapisarda; Sebastian Rothe; K Sandhu; Maxim D Seliverstov; A Marica Sjödin; Victoria A Truesdale; Céline Van Beveren; Paul Van den Bergh; Simon Sels; Y Wakabayashi; M Warda; Boris Andel; Stanislav Antalic; Anatoly Barzakh; L Capponi; Thomas Elias Cocolios

doi:10.1103/PhysRevC.90.041301

Evolution of fission-fragment mass distributions in the neutron-deficient lead region

Lars Ghys, Andrei N Andreyev, Xavier Derkx, Hilde De Witte, Jytte Elseviers, Dima V Fedorov, Valentin N Fedosseev, Fritz P Hessberger, Zdenka Kalaninová, Ulli Köster, Valentina Liberati, Kara Marie Lynch, Mark Huyse, Bruce Allan Marsh, S Mitsuoka, Peter Möller, Y Nagame, K Nishio, S Ota, Dieter PauwelsRobert D Page, Lucia Popescu, Deyan Radulov, Piet Van Duppen, Mustafa M Rajabali, J Randrup, Elisa Rapisarda, Sebastian Rothe, K Sandhu, Maxim D Seliverstov, A Marica Sjödin, Victoria A Truesdale, Céline Van Beveren, Paul Van den Bergh, Simon Sels, Y Wakabayashi, M Warda, Boris Andel, Stanislav Antalic, Anatoly Barzakh, L Capponi, Thomas Elias Cocolios

Nuclear Physics Group

Research output: Contribution to journal › Article › peer-review

Abstract

Low-energy β-delayed fission of 194,196At and 200,202Fr was studied in detail at the mass separator ISOLDE at CERN. The fission-fragment mass distributions of daughter nuclei 194,196Po and 202Rn indicate a triple-humped structure, marking the transition between asymmetric fission of 178,180 Hg and symmetric fission in the light Ra-Rn nuclei. Comparison with the macroscopic-microscopic finite-range liquid-drop model and the self-consistent approach employing the Gogny D1S energy density functional yields discrepancies. This demonstrates once more the need for dynamical fission calculations, because for both models the potential-energy surfaces lack pronounced structures, in contrast to those for the actinide region.

Original language	English
Article number	041301(R)
Journal	Physical Review C (Nuclear Physics)
Volume	90
DOIs	https://doi.org/10.1103/PhysRevC.90.041301
Publication status	Published - 15 Oct 2014

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Ghys, L., Andreyev, A. N., Derkx, X., De Witte, H., Elseviers, J., Fedorov, D. V., Fedosseev, V. N., Hessberger, F. P., Kalaninová, Z., Köster, U., Liberati, V., Lynch, K. M., Huyse, M., Marsh, B. A., Mitsuoka, S., Möller, P., Nagame, Y., Nishio, K., Ota, S., ... Cocolios, T. E. (2014). Evolution of fission-fragment mass distributions in the neutron-deficient lead region. Physical Review C (Nuclear Physics), 90, Article 041301(R). https://doi.org/10.1103/PhysRevC.90.041301

@article{8a81d988ec3e42ff979db444bfe78bc5,

title = "Evolution of fission-fragment mass distributions in the neutron-deficient lead region",

abstract = "Low-energy β-delayed fission of 194,196At and 200,202Fr was studied in detail at the mass separator ISOLDE at CERN. The fission-fragment mass distributions of daughter nuclei 194,196Po and 202Rn indicate a triple-humped structure, marking the transition between asymmetric fission of 178,180 Hg and symmetric fission in the light Ra-Rn nuclei. Comparison with the macroscopic-microscopic finite-range liquid-drop model and the self-consistent approach employing the Gogny D1S energy density functional yields discrepancies. This demonstrates once more the need for dynamical fission calculations, because for both models the potential-energy surfaces lack pronounced structures, in contrast to those for the actinide region.",

author = "Lars Ghys and Andreyev, {Andrei N} and Xavier Derkx and {De Witte}, Hilde and Jytte Elseviers and Fedorov, {Dima V} and Fedosseev, {Valentin N} and Hessberger, {Fritz P} and Zdenka Kalaninov{\'a} and Ulli K{\"o}ster and Valentina Liberati and Lynch, {Kara Marie} and Mark Huyse and Marsh, {Bruce Allan} and S Mitsuoka and Peter M{\"o}ller and Y Nagame and K Nishio and S Ota and Dieter Pauwels and Page, {Robert D} and Lucia Popescu and Deyan Radulov and {Van Duppen}, Piet and Rajabali, {Mustafa M} and J Randrup and Elisa Rapisarda and Sebastian Rothe and K Sandhu and Seliverstov, {Maxim D} and Sj{\"o}din, {A Marica} and Truesdale, {Victoria A} and {Van Beveren}, C{\'e}line and {Van den Bergh}, Paul and Simon Sels and Y Wakabayashi and M Warda and Boris Andel and Stanislav Antalic and Anatoly Barzakh and L Capponi and Cocolios, {Thomas Elias}",

note = "This work has been funded [...] by the UK Science and Technology Facilities Council (STFC) [...].",

year = "2014",

month = oct,

day = "15",

doi = "10.1103/PhysRevC.90.041301",

language = "English",

volume = "90",

journal = "Physical Review C (Nuclear Physics)",

issn = "0556-2813",

publisher = "American Physical Society",

}

Ghys, L, Andreyev, AN, Derkx, X, De Witte, H, Elseviers, J, Fedorov, DV, Fedosseev, VN, Hessberger, FP, Kalaninová, Z, Köster, U, Liberati, V, Lynch, KM, Huyse, M, Marsh, BA, Mitsuoka, S, Möller, P, Nagame, Y, Nishio, K, Ota, S, Pauwels, D, Page, RD, Popescu, L, Radulov, D, Van Duppen, P, Rajabali, MM, Randrup, J, Rapisarda, E, Rothe, S, Sandhu, K, Seliverstov, MD, Sjödin, AM, Truesdale, VA, Van Beveren, C, Van den Bergh, P, Sels, S, Wakabayashi, Y, Warda, M, Andel, B, Antalic, S, Barzakh, A, Capponi, L & Cocolios, TE 2014, 'Evolution of fission-fragment mass distributions in the neutron-deficient lead region', Physical Review C (Nuclear Physics), vol. 90, 041301(R). https://doi.org/10.1103/PhysRevC.90.041301

TY - JOUR

T1 - Evolution of fission-fragment mass distributions in the neutron-deficient lead region

AU - Ghys, Lars

AU - Andreyev, Andrei N

AU - Derkx, Xavier

AU - De Witte, Hilde

AU - Elseviers, Jytte

AU - Fedorov, Dima V

AU - Fedosseev, Valentin N

AU - Hessberger, Fritz P

AU - Kalaninová, Zdenka

AU - Köster, Ulli

AU - Liberati, Valentina

AU - Lynch, Kara Marie

AU - Huyse, Mark

AU - Marsh, Bruce Allan

AU - Mitsuoka, S

AU - Möller, Peter

AU - Nagame, Y

AU - Nishio, K

AU - Ota, S

AU - Pauwels, Dieter

AU - Page, Robert D

AU - Popescu, Lucia

AU - Radulov, Deyan

AU - Van Duppen, Piet

AU - Rajabali, Mustafa M

AU - Randrup, J

AU - Rapisarda, Elisa

AU - Rothe, Sebastian

AU - Sandhu, K

AU - Seliverstov, Maxim D

AU - Sjödin, A Marica

AU - Truesdale, Victoria A

AU - Van Beveren, Céline

AU - Van den Bergh, Paul

AU - Sels, Simon

AU - Wakabayashi, Y

AU - Warda, M

AU - Andel, Boris

AU - Antalic, Stanislav

AU - Barzakh, Anatoly

AU - Capponi, L

AU - Cocolios, Thomas Elias

N1 - This work has been funded [...] by the UK Science and Technology Facilities Council (STFC) [...].

PY - 2014/10/15

Y1 - 2014/10/15

N2 - Low-energy β-delayed fission of 194,196At and 200,202Fr was studied in detail at the mass separator ISOLDE at CERN. The fission-fragment mass distributions of daughter nuclei 194,196Po and 202Rn indicate a triple-humped structure, marking the transition between asymmetric fission of 178,180 Hg and symmetric fission in the light Ra-Rn nuclei. Comparison with the macroscopic-microscopic finite-range liquid-drop model and the self-consistent approach employing the Gogny D1S energy density functional yields discrepancies. This demonstrates once more the need for dynamical fission calculations, because for both models the potential-energy surfaces lack pronounced structures, in contrast to those for the actinide region.

AB - Low-energy β-delayed fission of 194,196At and 200,202Fr was studied in detail at the mass separator ISOLDE at CERN. The fission-fragment mass distributions of daughter nuclei 194,196Po and 202Rn indicate a triple-humped structure, marking the transition between asymmetric fission of 178,180 Hg and symmetric fission in the light Ra-Rn nuclei. Comparison with the macroscopic-microscopic finite-range liquid-drop model and the self-consistent approach employing the Gogny D1S energy density functional yields discrepancies. This demonstrates once more the need for dynamical fission calculations, because for both models the potential-energy surfaces lack pronounced structures, in contrast to those for the actinide region.

U2 - 10.1103/PhysRevC.90.041301

DO - 10.1103/PhysRevC.90.041301

M3 - Article

SN - 0556-2813

VL - 90

JO - Physical Review C (Nuclear Physics)

JF - Physical Review C (Nuclear Physics)

M1 - 041301(R)

ER -

Evolution of fission-fragment mass distributions in the neutron-deficient lead region

Abstract

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