Searcharxiv⌕ Search
Home/Archive/arXiv

arXiv · 2210.04741

Comprehensive investigation of fission yields by using spallation- and (p,2p)-induced fission reactions in inverse kinematics

J. L. Rodríguez-Sánchez·A. Graña-González·J. Benlliure·A. Chatillon·G. García-Jiménez·J. Taieb·H. Alvarez-Pol·L. Atar·L. Audouin·G. Authelet·A. Besteiro·G. Blanchon·K. Boretzky·P. Cabanelas·E. Casarejos·J. Cederkall·D. Cortina-Gil·A. Corsi·E. De Filippo·M. Feijoo·D. Galaviz·I. Gasparic·R. Gernhäuser·E. Haettner·M. Heil·A. Heinz·M. Holl·T. Jenegger·L. Ji·H. T. Johansson·A. Kelić-Heil·O. A. Kiselev·P. Klenze·A. Knyazev·D. Körper·T. Kröll·I. Lihtar·Y. A. Litvinov·B. Löher·N. Martorana·P. Morfouace·D. Mücher·S. Murillo Morales·A. Obertelli·V. Panin·J. Park·S. Paschalis·A. Perea·M. Petri1·S. Pietri·S. Pirrone·L. Ponnath·A. Revel·H. -B. Rhee·L. Rose·D. M. Ross·P. Russotto·H. Simon·A. Stott·Y. Sun·C. Sürder·R. Taniuchi·O. Tengblad·H. T. Törnqvist·M. Trimarchi·S. Velardita·J. Vesic·B. Voss·H. Weick
View original source ↗Read source document ↗Export metadata ↓

Abstract

In the last decades, measurements of spallation, fragmentation and Coulex induced fission reactions in inverse kinematics have provided valuable data to accurately investigate the fission dynamics and nuclear structure at large deformations of a large variety of stable and non-stable heavy nuclei. To go a step further, we propose now to induce fission by the use of quasi-free (p,2p) scattering reactions in inverse kinematics, which allows us to reconstruct the excitation energy of the compound fissioning system by using the four-momenta of the two outgoing protons. Therefore, this new approach might permit to correlate the excitation energy with the charge and mass distributions of the fission fragments and with the fission probabilities, given for the first time direct access to the simultaneous measurement of the fission yield dependence on temperature and fission barrier heights of exotic heavy nuclei, respectively. The first experiment based on this methodology was realized recently at the GSI/FAIR facility and a detailed description of the experimental setup is given here.

Explore related subjects

nucl-ex

Keep this discovery

BibTeXRIS

J. L. Rodríguez-Sánchez, A. Graña-González, J. Benlliure, A. Chatillon, G. García-Jiménez, J. Taieb, H. Alvarez-Pol, L. Atar, L. Audouin, G. Authelet, A. Besteiro, G. Blanchon, K. Boretzky, P. Cabanelas, E. Casarejos, J. Cederkall, D. Cortina-Gil, A. Corsi, E. De Filippo, M. Feijoo, D. Galaviz, I. Gasparic, R. Gernhäuser, E. Haettner, M. Heil, A. Heinz, M. Holl, T. Jenegger, L. Ji, H. T. Johansson, A. Kelić-Heil, O. A. Kiselev, P. Klenze, A. Knyazev, D. Körper, T. Kröll, I. Lihtar, Y. A. Litvinov, B. Löher, N. Martorana, P. Morfouace, D. Mücher, S. Murillo Morales, A. Obertelli, V. Panin, J. Park, S. Paschalis, A. Perea, M. Petri1, S. Pietri, S. Pirrone, L. Ponnath, A. Revel, H. -B. Rhee, L. Rose, D. M. Ross, P. Russotto, H. Simon, A. Stott, Y. Sun, C. Sürder, R. Taniuchi, O. Tengblad, H. T. Törnqvist, M. Trimarchi, S. Velardita, J. Vesic, B. Voss, H. Weick. 2022-10-10. Comprehensive investigation of fission yields by using spallation- and (p,2p)-induced fission reactions in inverse kinematics. https://doi.org/10.1051/epjconf/202328404020

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related papers

arXiv2026

Reinvestigation of the Yield of the Trinity Device

Previous published analyses of trinitite to determine the yield of the Trinity nuclear explosion used various estimates of the fraction of fission products that became incorporated in trinitite. Furthermore, these studies utilized nuclear data that has subsequently been revised. Utilizing a planar germanium detector, we observed gamma rays produced by the decays of both 137Cs and 239Pu from four samples of trinitite. From the observed 137Cs/239Pu ratios of and a simple analysis method based on current nuclear data and weapons debris studies, we find an average yield of 9.1+-4.5 kilotons from our four samples. While this result is substantially lower than the established total yield of 21 kilotons, it is in reasonable agreement that attributable to fissions in the 239Pu core alone.

nucl-ex↗
arXiv2026

Search for neutrinoless quadruple beta decay of $^{136}$Xe in PandaX-4T detector

The observation of neutrinoless quadruple beta decay (0$\nu$4$\beta$) in the absence of neutrinoless double beta decay (0$\nu$2$\beta$) has been argued to provide a strong indication that neutrinos are Dirac particles. We report a search for 0$\nu$4$\beta$ decay of $^{136}\text{Xe}$ using a total $^{136}\text{Xe}$ exposure of 148.4 kg$\cdot$yr, collected during the commissioning and the first science runs of the PandaX-4T experiment. No significant excess of events over the background is observed. A lower limit on the 0$\nu$4$\beta$ decay half-life of $^{136}\text{Xe}$ is set at 6.01 x $10^{24}$ yr at the 90% confidence level. This result establishes the most stringent constraint on this process in xenon, demonstrating the unique capability of the PandaX-4T detector in probing lepton number violation and shedding light on the fundamental nature of neutrinos.

nucl-ex↗
arXiv2026

Island of Inversion in neutron-rich cobalt isotopes revealed from mass measurements

Mass measurements of the ground and isomeric states of $^{68-70}$Co have been performed using the JYFLTRAP Penning-trap mass spectrometer at the IGISOL facility. The masses were measured, either for the first time for the isomeric states of $^{68}$Co and $^{70}$Co, or with greatly improved precision for the others, removing ambiguities in the mass surface beyond $N=40$. The ordering of the low and high-spin states in $^{68}$Co and $^{70}$Co has also been established. The results, supported by Large-Scale Shell Model and Discrete Non-Orthogonal Shell-Model calculations, show a gradual lowering of intruder states with increasing neutron number, eventually leading to an inversion in $^{70}$Co. These findings clarify previously proposed contradictory interpretations. Finally, we demonstrate the importance of including induced effective 3N forces for a consistent description of binding energies in the island of inversion near $N=40$.

nucl-ex↗