Studies on fission with ALADIN

Martin, Julie-Fiona; Taïeb, J.; Chatillon, A.; Bélier, G.; Boutoux, G.; Ebran, A.; Gorbinet, T.; Grente, L.; Bouchet, L.; Pellereau, E.; Álvarez‐Pol, H.; Audouin, L.; Aumann, T.; Ayyad, Y.; Benlliure, J.; Casarejos, E.; Cortina-Gil, D.; Caamaño, M.; Farget, F.; Domínguez, Beatriz Fernández; Heinz, A.; Jurado, B.; Kelić-Heil, A.; Kurz, N.; Nociforo, C.; Paradela, C.; Piétri, S.; Ramos, D.; Rodríguez-Sánchez, J. L.; Rodríguez–Tajes, C.; Rossi, D.; Schmidt, Karl‐Heinz; Simon, H.; Tassan‐Got, L.; Vargas, J. E. Ramirez; Voss, B.; Weick, H.

doi:10.1140/epja/i2015-15174-0

Cited by 29 publications

(14 citation statements)

References 22 publications

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“…Both the masses of the fragments and the average neutron multiplicity were not accessible in this kind of experiments. Starting from the same reaction mechanism but using a much more advanced experimental setup, the SOFIA experiments at GSI Darmstadt now allow one to obtain both charge and mass fission yields with an accuracy smaller than a mass unit as well as the average neutron multiplicity ν [56,57]. Other techniques have been developed in parallel to study the fission of exotic nuclei.…”

Section: Resultsmentioning

confidence: 99%

“…The tensor interaction rearranges the position of the single particle orbitals changing the shell effects responsible for many of the properties of the quantities relevant to fission. In fact, it could be the missing ingredient required to explain a symmetric bimodal fission mode recently found in some neutron-deficient thorium isotopes [56][57][58][59]. Recent experimental data provided by the experiments of the SOFIA collaboration have revealed the existence of such a symmetric bimodal mode, composed of the standard super-long mode and a new compact mode.…”

Section: Introductionmentioning

confidence: 94%

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Description of the asymmetric to symmetric fission transition in the neutron-deficient thorium isotopes: Role of the tensor force

et al. 2020

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In the present study, we have investigated the impact of the tensor force on fission paths, in particular the symmetric and asymmetric barriers in 230 Th, 226 Th, 222 Th and 216 Th isotopes which display an asymmetric to symmetric fission transition. This analysis has been performed within the HFB approach with (Q20,Q30,Q40) as collective variable constraints, using the D1ST2a Gogny+tensor term interaction and comparing to the standard D1S Gogny interaction results. The effects from the tensor term on the potential energy surface landscape, and especially on barrier heights and its topology by opening a new valley in agreement with experimental data, are found to be crucial in the description of exotic actinide fission. We conclude that a tensor term should be integrated to the long range part of the effective interaction for a better description of the fission.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 94%

Description of the asymmetric to symmetric fission transition in the neutron-deficient thorium isotopes: Role of the tensor force

et al. 2020

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“…In this respect, earlier and recent experiments exploiting the Coulomb excitation of relativistic radioactive beam followed by fission at the SOFIA setup at GSI [156], have all potential to establish a complementary way for low-energy fission studies in this region. One of the main advantages of SOFIA is its access to all types of nuclides -odd-odd, even-even and odd-A, while only the odd-odd cases can be studied via βDF, see Section 3.2.…”

Section: Complementary Approaches To Study Low-energy Fission In the mentioning

confidence: 99%

“…[114]. The calculated yields are compared with selected experimental FFMDs from particle-induced (blue symbols, [157,158]), βDF (red, [129,120,131]) and Coulex-induced fission from FRS@GSI (green, [98,99]) and SOFIA (dashed light green, [156]. 3.6 β-delayed fission rates and their use to determine fission barrier heights…”

Section: Complementary Approaches To Study Low-energy Fission In the mentioning

confidence: 99%

Alpha Decay and Beta-Delayed Fission: Tools for Nuclear Physics Studies

Duppen

Andreyev

2018

The Euroschool on Exotic Beams - Vol. 5

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“…Since the 90s, experimental efforts on inverse kinematics reactions fall in with this trend by providing extremely accurate yields data for various fissioning nuclei [1][2][3][4]. On the other side, building a predictive theory of fission applicable where no data is available remains a major challenge of nuclear physics.…”

Section: Introductionmentioning

confidence: 99%

Microscopic description of fission dynamics: Toward a 3D computation of the time dependent GCM equation

Regnier

Dubray

Schunck³

et al. 2017

EPJ Web Conf.

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Abstract. Accurate knowledge of fission fragment yields is an essential ingredient of numerous applications ranging from the formation of elements in the r-process to fuel cycle optimization in nuclear energy. The need for a predictive theory applicable where no data is available, together with the variety of potential applications, is an incentive to develop a fully microscopic approach to fission dynamics. One of the most promising theoretical frameworks is the time dependent generator coordinate method (TDGCM) applied under the Gaussian overlap approximation (GOA). However, the computational cost of this method makes it difficult to perform calculations with more than two collective degree of freedom. Meanwhile, it is well-known from both semi-phenomenological and fully microscopic approaches that at least four or five dimensions may play a role in the dynamics of fission. To overcome this limitation, we develop the code FELIX aiming to solve the TDGCM+GOA equation for an arbitrary number of collective variables. In this talk, we report the recent progress toward this enriched description of fission dynamics. We will briefly present the numerical methods adopted as well as the status of the latest version of FELIX. Finally, we will discuss fragments yields obtained within this approach for the low energy fission of major actinides.

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Studies on fission with ALADIN

Cited by 29 publications

References 22 publications

Description of the asymmetric to symmetric fission transition in the neutron-deficient thorium isotopes: Role of the tensor force

Description of the asymmetric to symmetric fission transition in the neutron-deficient thorium isotopes: Role of the tensor force

Alpha Decay and Beta-Delayed Fission: Tools for Nuclear Physics Studies

Microscopic description of fission dynamics: Toward a 3D computation of the time dependent GCM equation

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