Shell effects in fission and quasi-fission

Simenel, Cedric; Bernard, R.; Blanchon, G.; Godbey, K.; Lee, H.; McGlynn, P.; Umar, A. S.

doi:10.1051/epjconf/202430601019

Title: Shell effects in fission and quasi-fission

Journal Article · 18 October 2024 · EPJ Web of Conferences (Online)

DOI: https://doi.org/10.1051/epjconf/202430601019 · OSTI ID:2472774

Simenel, Cedric ^[1]; Bernard, R. ^[2]; Blanchon, G. ^[3]; Godbey, K. ^[4]; Lee, H. ^[5]; McGlynn, P. ^[5]; Umar, A. S. ^[6]

Australian National University (Australia); Vanderbilt University
CEA, DES, Saint Paul les Durance (France)
CEA, DAM, DIF, Arpajon (France); Université Paris-Saclay, Bruyères-Le-Châtel (France)
Michigan State University, East Lansing, MI (United States)
Australian National University (Australia)
Vanderbilt University, Nashville, TN (United States)

Quantum shell effects are responsible for asymmetric fission. They are also expected to affect the formation of fission fragments in quasi-fission reactions occurring in heavy-ion collisions. Shell effects in fission are studied with the single-particle energy level density near the Fermi level. In particular, shell effects in the pre-fragments and their role in fixing the final mass asymmetry of the fission fragments are discussed. Systematic time-dependent Hartree-Fock simulations of heavy-ion collisions show that quasi-fission fragment properties share strong similarities with fragments formed in fission of the compound nuclei. This is an indication that similar shell effects are responsible for the final asymmtery in both mechanisms.

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Research Organization:: Vanderbilt University, Nashville, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: SC0013847; NA0004074

OSTI ID:: 2472774

Journal Information:: EPJ Web of Conferences (Online), Journal Name: EPJ Web of Conferences (Online) Vol. 306; ISSN 2100-014X

Publisher:: EDP SciencesCopyright Statement

Country of Publication:: United States

Language:: English

References (70)

The microscopic mechanism behind the fission barrier asymmetry Gustafsson, C.; Möller, P.; Nilsson, S. G. Physics Letters B, Vol. 34, Issue 5 https://doi.org/10.1016/0370-2693(71)90621-6	journal	March 1971
Shell effects in nuclear masses and deformation energies Strutinsky, V. M. Nuclear Physics A, Vol. 95, Issue 2 https://doi.org/10.1016/0375-9474(67)90510-6	journal	April 1967
Quasi-fission — The mass-drift mode in heavy-ion reactions Tōke, J.; Bock, R.; Dai, G. X. Nuclear Physics A, Vol. 440, Issue 2 https://doi.org/10.1016/0375-9474(85)90344-6	journal	July 1985
Relativistic radioactive beams: A new access to nuclear-fission studies Schmidt, K. -H.; Steinhäuser, S.; Böckstiegel, C. Nuclear Physics A, Vol. 665, Issue 3-4 https://doi.org/10.1016/S0375-9474(99)00384-X	journal	February 2000
The Axial Hartree–Fock + BCS Code SkyAx Reinhard, P. -G.; Schuetrumpf, B.; Maruhn, J. A. Computer Physics Communications, Vol. 258 https://doi.org/10.1016/j.cpc.2020.107603	journal	January 2021
Shell effects in fission and quasi-fission of heavy and superheavy nuclei Itkis, M. G.; A¨ysto¨, J.; Beghini, S. Nuclear Physics A, Vol. 734 https://doi.org/10.1016/j.nuclphysa.2004.01.022	journal	April 2004
Nuclear-fission studies with relativistic secondary beams: Analysis of fission channels Böckstiegel, C.; Steinhäuser, S.; Schmidt, K. -H. Nuclear Physics A, Vol. 802, Issue 1-4 https://doi.org/10.1016/j.nuclphysa.2008.01.012	journal	April 2008
Fusion and fission of heavy and superheavy nuclei (experiment) Itkis, M. G.; Vardaci, E.; Itkis, I. M. Nuclear Physics A, Vol. 944 https://doi.org/10.1016/j.nuclphysa.2015.09.007	journal	December 2015
Investigation of the reaction 64Ni+238U being an option of synthesizing element 120 Kozulin, E. M.; Knyazheva, G. N.; Itkis, I. M. Physics Letters B, Vol. 686, Issue 4-5 https://doi.org/10.1016/j.physletb.2010.02.041	journal	March 2010
Systematics of the mass-asymmetric fission of excited nuclei from 176Os to 206Pb Prasad, E.; Hinde, D. J.; Dasgupta, M. Physics Letters B, Vol. 811 https://doi.org/10.1016/j.physletb.2020.135941	journal	December 2020
Evidence of quasifission in the 180Hg composite system formed in the 68Zn + 112Sn reaction Kozulin, E. M.; Vardaci, E.; Trzaska, W. H. Physics Letters B, Vol. 819 https://doi.org/10.1016/j.physletb.2021.136442	journal	August 2021
Comparison of fission and quasi-fission modes Simenel, C.; McGlynn, P.; Umar, A. S. Physics Letters B, Vol. 822 https://doi.org/10.1016/j.physletb.2021.136648	journal	November 2021
Evidence for the general dominance of proton shells in low-energy fission Mahata, K.; Schmitt, C.; Gupta, Shilpi Physics Letters B, Vol. 825 https://doi.org/10.1016/j.physletb.2021.136859	journal	February 2022
Impact of tensor force on quantum shell effects in quasifission reactions Li, Liang; Guo, Lu; Godbey, K. Physics Letters B, Vol. 833 https://doi.org/10.1016/j.physletb.2022.137349	journal	October 2022
Sequential fission and the influence of 208Pb closed shells on the dynamics of superheavy element synthesis reactions Jeung, D. Y.; Hinde, D. J.; Dasgupta, M. Physics Letters B, Vol. 837 https://doi.org/10.1016/j.physletb.2022.137641	journal	February 2023
Heavy-ion collisions and fission dynamics with the time-dependent Hartree–Fock theory and its extensions Simenel, C.; Umar, A. S. Progress in Particle and Nuclear Physics, Vol. 103 https://doi.org/10.1016/j.ppnp.2018.07.002	journal	November 2018
Low-energy heavy-ion reactions and the Skyrme effective interaction Stevenson, P. D.; Barton, M. C. Progress in Particle and Nuclear Physics, Vol. 104 https://doi.org/10.1016/j.ppnp.2018.09.002	journal	January 2019
Collision dynamics at medium and relativistic energies Colonna, M. Progress in Particle and Nuclear Physics, Vol. 113 https://doi.org/10.1016/j.ppnp.2020.103775	journal	July 2020
Experimental studies of the competition between fusion and quasifission in the formation of heavy and superheavy nuclei Hinde, D. J.; Dasgupta, M.; Simpson, E. C. Progress in Particle and Nuclear Physics, Vol. 118 https://doi.org/10.1016/j.ppnp.2021.103856	journal	May 2021
Impact of pear-shaped fission fragments on mass-asymmetric fission in actinides Scamps, Guillaume; Simenel, Cédric Nature, Vol. 564, Issue 7736 https://doi.org/10.1038/s41586-018-0780-0	journal	December 2018
Three-dimensional TDHF calculations for reactions of unstable nuclei Kim, Ka-Hae; Otsuka, Takaharu; Bonche, Paul Journal of Physics G: Nuclear and Particle Physics, Vol. 23, Issue 10 https://doi.org/10.1088/0954-3899/23/10/014	journal	October 1997
Deformed shell effects in Ca 48 + Bk 249 quasifission fragments Godbey, K.; Umar, A. S.; Simenel, C. Physical Review C, Vol. 100, Issue 2 https://doi.org/10.1103/PhysRevC.100.024610	journal	August 2019
Effect of shell structure on the fission of sub-lead nuclei Scamps, Guillaume; Simenel, Cédric Physical Review C, Vol. 100, Issue 4 https://doi.org/10.1103/PhysRevC.100.041602	journal	October 2019
Effect of the doubly magic shell closures in Sn 132 and Pb 208 on the mass distributions of fission fragments of superheavy nuclei Ishizuka, C.; Zhang, X.; Usang, M. D. Physical Review C, Vol. 101, Issue 1 https://doi.org/10.1103/PhysRevC.101.011601	journal	January 2020
Microscopic predictions for the production of neutron-rich nuclei in the reaction Yb 176 + Yb 176 Godbey, K.; Simenel, C.; Umar, A. S. Physical Review C, Vol. 101, Issue 3 https://doi.org/10.1103/PhysRevC.101.034602	journal	March 2020
Description of the asymmetric to symmetric fission transition in the neutron-deficient thorium isotopes: Role of the tensor force Bernard, R. N.; Pillet, N.; Robledo, L. M. Physical Review C, Vol. 101, Issue 4 https://doi.org/10.1103/PhysRevC.101.044615	journal	April 2020
Mass-asymmetric fission of Bi 205 , 207 , 209 at energies close to the fission barrier using proton bombardment of Pb 204 , 206 , 208 Swinton-Bland, B. M. A.; Stoyer, M. A.; Berriman, A. C. Physical Review C, Vol. 102, Issue 5 https://doi.org/10.1103/PhysRevC.102.054611	journal	November 2020
Experimental investigation of the role of shell structure in quasifission mass distributions Hinde, D. J.; Rietz, R. du; Jeung, D. Y. Physical Review C, Vol. 106, Issue 6 https://doi.org/10.1103/PhysRevC.106.064614	journal	December 2022
Theoretical uncertainty quantification for heavy-ion fusion Godbey, K.; Umar, A. S.; Simenel, C. Physical Review C, Vol. 106, Issue 5 https://doi.org/10.1103/PhysRevC.106.L051602	journal	November 2022
Time-dependent Hartree-Fock study of quasifission trajectories in reactions forming Og294 McGlynn, P.; Simenel, C. Physical Review C, Vol. 107, Issue 5 https://doi.org/10.1103/PhysRevC.107.054614	journal	May 2023
Unexpected entrance-channel effect in the fission of 216 Ra * Chizhov, A. Yu.; Itkis, M. G.; Itkis, I. M. Physical Review C, Vol. 67, Issue 1 https://doi.org/10.1103/PhysRevC.67.011603	journal	January 2003
Superheavy nuclei and quasi-atoms produced in collisions of transuranium ions Zagrebaev, V. I.; Oganessian, Yu. Ts.; Itkis, M. G. Physical Review C, Vol. 73, Issue 3 https://doi.org/10.1103/PhysRevC.73.031602	journal	March 2006
Fission modes of Fm 256 and Fm 258 in a microscopic approach Bonneau, L. Physical Review C, Vol. 74, Issue 1 https://doi.org/10.1103/PhysRevC.74.014301	journal	July 2006
Structure properties of Th 226 and Fm 256 , 258 , 260 fission fragments: Mean-field analysis with the Gogny force Dubray, N.; Goutte, H.; Delaroche, J. -P. Physical Review C, Vol. 77, Issue 1 https://doi.org/10.1103/PhysRevC.77.014310	journal	January 2008
Effects of nuclear orientation on the mass distribution of fission fragments in the reaction of S 36 + U 238 Nishio, K.; Ikezoe, H.; Mitsuoka, S. Physical Review C, Vol. 77, Issue 6 https://doi.org/10.1103/PhysRevC.77.064607	journal	June 2008
New inverse quasifission mechanism to produce neutron-rich transfermium nuclei Kedziora, David J.; Simenel, Cédric Physical Review C, Vol. 81, Issue 4 https://doi.org/10.1103/PhysRevC.81.044613	journal	April 2010
Fusion probabilities in the reactions 40 , 48 Ca+ 238 U at energies around the Coulomb barrier Nishio, K.; Mitsuoka, S.; Nishinaka, I. Physical Review C, Vol. 86, Issue 3 https://doi.org/10.1103/PhysRevC.86.034608	journal	September 2012
Mapping quasifission characteristics and timescales in heavy element formation reactions du Rietz, R.; Williams, E.; Hinde, D. J. Physical Review C, Vol. 88, Issue 5 https://doi.org/10.1103/PhysRevC.88.054618	journal	November 2013
Shell effects in damped collisions of Sr 88 with Yb 176 at the Coulomb barrier energy Kozulin, E. M.; Knyazheva, G. N.; Dmitriev, S. N. Physical Review C, Vol. 89, Issue 1 https://doi.org/10.1103/PhysRevC.89.014614	journal	January 2014
Formation and dynamics of fission fragments Simenel, C.; Umar, A. S. Physical Review C, Vol. 89, Issue 3 https://doi.org/10.1103/PhysRevC.89.031601	journal	March 2014
Dissipative dynamics in quasifission Oberacker, V. E.; Umar, A. S.; Simenel, C. Physical Review C, Vol. 90, Issue 5 https://doi.org/10.1103/PhysRevC.90.054605	journal	November 2014
Reduced quasifission competition in fusion reactions forming neutron-rich heavy elements Hammerton, K.; Kohley, Z.; Hinde, D. J. Physical Review C, Vol. 91, Issue 4 https://doi.org/10.1103/PhysRevC.91.041602	journal	April 2015
Superfluid dynamics of Fm 258 fission Scamps, Guillaume; Simenel, Cédric; Lacroix, Denis Physical Review C, Vol. 92, Issue 1 https://doi.org/10.1103/PhysRevC.92.011602	journal	July 2015
Shape evolution and collective dynamics of quasifission in the time-dependent Hartree-Fock approach Umar, A. S.; Oberacker, V. E.; Simenel, C. Physical Review C, Vol. 92, Issue 2 https://doi.org/10.1103/PhysRevC.92.024621	journal	August 2015
Time-dependent Hartree-Fock calculations for multinucleon transfer and quasifission processes in the Ni 64 + U 238 reaction Sekizawa, Kazuyuki; Yabana, Kazuhiro Physical Review C, Vol. 93, Issue 5 https://doi.org/10.1103/PhysRevC.93.054616	journal	May 2016
Fusion and quasifission dynamics in the reactions Ca 48 + Bk 249 and Ti 50 + Bk 249 using a time-dependent Hartree-Fock approach Umar, A. S.; Oberacker, V. E.; Simenel, C. Physical Review C, Vol. 94, Issue 2 https://doi.org/10.1103/PhysRevC.94.024605	journal	August 2016
Microscopic study of induced fission dynamics of Th 226 with covariant energy density functionals Tao, H.; Zhao, J.; Li, Z. P. Physical Review C, Vol. 96, Issue 2 https://doi.org/10.1103/PhysRevC.96.024319	journal	August 2017
Inverse quasifission in the reactions Gd 156 , 160 + W 186 Kozulin, E. M.; Zagrebaev, V. I.; Knyazheva, G. N. Physical Review C, Vol. 96, Issue 6 https://doi.org/10.1103/PhysRevC.96.064621	journal	December 2017
Systematic study of cluster radioactivity of superheavy nuclei Zhang, Y. L.; Wang, Y. Z. Physical Review C, Vol. 97, Issue 1 https://doi.org/10.1103/PhysRevC.97.014318	journal	January 2018
Sub-barrier quasifission in heavy element formation reactions with deformed actinide target nuclei Hinde, D. J.; Jeung, D. Y.; Prasad, E. Physical Review C, Vol. 97, Issue 2 https://doi.org/10.1103/PhysRevC.97.024616	journal	February 2018
Systematic studies of α and heavy-cluster emissions from superheavy nuclei Santhosh, K. P.; Nithya, C. Physical Review C, Vol. 97, Issue 6 https://doi.org/10.1103/PhysRevC.97.064616	journal	June 2018
Connecting the nuclear equation of state to the interplay between fusion and quasifission processes in low-energy nuclear reactions Zheng, H.; Burrello, S.; Colonna, M. Physical Review C, Vol. 98, Issue 2 https://doi.org/10.1103/PhysRevC.98.024622	journal	August 2018
Cluster radioactivity in superheavy nuclei Warda, M.; Zdeb, A.; Robledo, L. M. Physical Review C, Vol. 98, Issue 4 https://doi.org/10.1103/PhysRevC.98.041602	journal	October 2018
Isotopic trends of quasifission and fusion-fission in the reactions Ca 48 + Pu 239 , 244 Guo, Lu; Shen, Caiwan; Yu, Chong Physical Review C, Vol. 98, Issue 6 https://doi.org/10.1103/PhysRevC.98.064609	journal	December 2018
Cluster radioactivity of Og 176 118 294 Matheson, Zachary; Giuliani, Samuel A.; Nazarewicz, Witold Physical Review C, Vol. 99, Issue 4 https://doi.org/10.1103/PhysRevC.99.041304	journal	April 2019
Experimental study of nuclear fission along the thorium isotopic chain: From asymmetric to symmetric fission Chatillon, A.; Taïeb, J.; Alvarez-Pol, H. Physical Review C, Vol. 99, Issue 5 https://doi.org/10.1103/PhysRevC.99.054628	journal	May 2019
Heavy-Particle Radioactivity of Superheavy Nuclei Poenaru, D. N.; Gherghescu, R. A.; Greiner, W. Physical Review Letters, Vol. 107, Issue 6 https://doi.org/10.1103/PhysRevLett.107.062503	journal	August 2011
Interplay between Quantum Shells and Orientation in Quasifission Wakhle, A.; Simenel, C.; Hinde, D. J. Physical Review Letters, Vol. 113, Issue 18 https://doi.org/10.1103/PhysRevLett.113.182502	journal	October 2014
Microscopic Phase-Space Exploration Modeling of Fm 258 Spontaneous Fission Tanimura, Yusuke; Lacroix, Denis; Ayik, Sakir Physical Review Letters, Vol. 118, Issue 15 https://doi.org/10.1103/PhysRevLett.118.152501	journal	April 2017
Evidence for the Role of Proton Shell Closure in Quasifission Reactions from X-Ray Fluorescence of Mass-Identified Fragments Morjean, M.; Hinde, D. J.; Simenel, C. Physical Review Letters, Vol. 119, Issue 22 https://doi.org/10.1103/PhysRevLett.119.222502	journal	November 2017
Timescales of Quantum Equilibration, Dissipation and Fluctuation in Nuclear Collisions Simenel, C.; Godbey, K.; Umar, A. S. Physical Review Letters, Vol. 124, Issue 21 https://doi.org/10.1103/PhysRevLett.124.212504	journal	May 2020
Bimodal symmetric fission observed in the heaviest elements Hulet, E. K.; Wild, J. F.; Dougan, R. J. Physical Review Letters, Vol. 56, Issue 4 https://doi.org/10.1103/PhysRevLett.56.313	journal	January 1986
Time-dependent density-functional description of nuclear dynamics Nakatsukasa, Takashi; Matsuyanagi, Kenichi; Matsuo, Masayuki Reviews of Modern Physics, Vol. 88, Issue 4 https://doi.org/10.1103/RevModPhys.88.045004	journal	November 2016
Nuclear quantum many-body dynamics: From collective vibrations to heavy-ion collisions Simenel, Cédric The European Physical Journal A, Vol. 48, Issue 11 https://doi.org/10.1140/epja/i2012-12152-0	journal	November 2012
Stochastic quantum dynamics beyond mean field Lacroix, Denis; Ayik, Sakir The European Physical Journal A, Vol. 50, Issue 6 https://doi.org/10.1140/epja/i2014-14095-8	journal	June 2014
Hartree–Fock–Bogoliubov study of quantum shell effects on the path to fission in $$^{180}$$Hg, $$^{236}$$U and $$^{256}$$Fm Bernard, R. N.; Simenel, C.; Blanchon, G. The European Physical Journal A, Vol. 59, Issue 3 https://doi.org/10.1140/epja/s10050-023-00964-2	journal	March 2023
Microscopic description of large amplitude collective motion in the nuclear astrophysics context Lacroix, Denis; Tanimura, Yusuke; Scamps, Guillaume International Journal of Modern Physics E, Vol. 24, Issue 09 https://doi.org/10.1142/S0218301315410050	journal	September 2015
TDHF Theory and Its Extensions for the Multinucleon Transfer Reaction: A Mini Review Sekizawa, Kazuyuki Frontiers in Physics, Vol. 7 https://doi.org/10.3389/fphy.2019.00020	journal	March 2019
Quasifission Dynamics in Microscopic Theories Godbey, Kyle; Umar, A. S. Frontiers in Physics, Vol. 8 https://doi.org/10.3389/fphy.2020.00040	journal	February 2020
Applications of Time-Dependent Density-Matrix Approach Tohyama, Mitsuru Frontiers in Physics, Vol. 8 https://doi.org/10.3389/fphy.2020.00067	journal	March 2020

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