Search arXiv⌕ Search
Home/Archive/arXiv

arXiv · 2007.07837

Multi-nucleon transfer in the interaction of 977 MeV and 1143 MeV $^{204}$Hg with $^{208}$Pb

V. V. Desai·A. Pica·W. Loveland·J. S. Barrett·Department of Chemistry·Oregon State University·Corvallis·Oregon 97331 USA·E. A. McCutchan·National Nuclear Data Center·Brookhaven National Laboratory·Upton·New York 11973·USA·S. Zhu·M. P. Carpenter·J. P. Greene·T. Lauritsen·Physics Division·Argonne National Laboratory·Argonne·Illinois 60439 USA·R. V. F. Janssens·Department of Physics·Astronomy·University of North Carolina at Chapel Hill·Chapel Hill·North Carolina 27599 USA·Triangle Universities Nuclear Laboratory·Duke University·Durham·North Carolina 27708 USA·B. M. S. Amro·Dept. of Physics·University of Massachusetts Lowell·Lowell MA 01854 USA·W. B. Walters·Dept. of Chemistry·University of Maryland·College Park·MD
View original source ↗Read source document ↗Export metadata ↓

Abstract

A previous study of symmetric collisions of massive nuclei has shown that current models of multi-nucleon transfer (MNT) reactions do not adequately describe the transfer product yields. To gain further insight into this problem, we have measured the yields of MNT products in the interaction of 977 (E/A = 4.79 MeV) and 1143 MeV (E/A = 5.60 MeV) $^{204}$Hg with $^{208}$Pb. We find that the yield of multi-nucleon transfer products are similar in these two reactions and are substantially lower than those observed in the reaction of 1257 MeV (E/A = 6.16 MeV) $^{204}$Hg + $^{198}$Pt. We compare our measurements with the predictions of the GRAZING-F, di-nuclear systems (DNS) and improved quantum molecular dynamics (ImQMD) models. For the observed isotopes of the elements Au, Hg, Tl, Pb and Bi, the measured values of the MNT cross sections are orders of magnitude larger than the predicted values. Furthermore, the various models predict the formation of nuclides near the N=126 shell, which are not observed.

Explore related subjects

nucl-ex

Keep this discovery

BibTeXRIS

V. V. Desai, A. Pica, W. Loveland, J. S. Barrett, Department of Chemistry, Oregon State University, Corvallis, Oregon 97331 USA, E. A. McCutchan, National Nuclear Data Center, Brookhaven National Laboratory, Upton, New York 11973, USA, S. Zhu, M. P. Carpenter, J. P. Greene, T. Lauritsen, Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 USA, R. V. F. Janssens, Department of Physics, Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 USA, Triangle Universities Nuclear Laboratory, Duke University, Durham, North Carolina 27708 USA, B. M. S. Amro, Dept. of Physics, University of Massachusetts Lowell, Lowell MA 01854 USA, W. B. Walters, Dept. of Chemistry, University of Maryland, College Park, MD. 2020-07-13. Multi-nucleon transfer in the interaction of 977 MeV and 1143 MeV $^{204}$Hg with $^{208}$Pb. https://doi.org/10.1103/physrevc.101.034612

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↗