Multinucleon transfer in the interaction of 977 MeV and 1143 MeV $^{204}\mathrm{Hg}$ with $^{208}\mathrm{Pb}$

Multinucleon 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, E. A. McCutchan, S. Zhu, A. D. Ayangeakaa, M. P. Carpenter, J. P. Greene, T. Lauritsen, R. V. F. Janssens, B. M. S. Amro, and W. B. Walters

Phys. Rev. C 101, 034612 – Published 19 March 2020

Abstract

A previous study of symmetric collisions of massive nuclei has shown that current models of multinucleon 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 multinucleon 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, dinuclear 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.

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Received 21 December 2019
Accepted 9 March 2020

DOI:https://doi.org/10.1103/PhysRevC.101.034612

Physics Subject Headings (PhySH)

Low & intermediate energy heavy-ion reactions Nuclear reactions Transfer reactions

Nuclear Physics

Authors & Affiliations

V. V. Desai, A. Pica , W. Loveland , and 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^*, A. D. Ayangeakaa^†, M. P. Carpenter, J. P. Greene , and T. Lauritsen

Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA

R. V. F. Janssens

Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA and Triangle Universities Nuclear Laboratory, Duke University, Durham, North Carolina 27708, USA

B. M. S. Amro

Department of Physics, University of Massachusetts Lowell, Lowell, Massachusetts 01854, USA

W. B. Walters

Department of Chemistry, University of Maryland, College Park, Maryland 20742, USA

^*Present address: National Nuclear Data Center, Brookhaven National Laboratory, Upton, New York 11973, USA.
^†Present address: United States Naval Academy, Annapolis, Maryland 21402 USA.

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Vol. 101, Iss. 3 — March 2020

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Physical Review C

covering nuclear physics

Multinucleon 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, E. A. McCutchan, S. Zhu, A. D. Ayangeakaa, M. P. Carpenter, J. P. Greene, T. Lauritsen, R. V. F. Janssens, B. M. S. Amro, and W. B. Walters

Phys. Rev. C 101, 034612 – Published 19 March 2020

Abstract

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Physical Review C

covering nuclear physics

Multinucleon transfer in the interaction of 977 MeV and 1143 MeV Hg204 with Pb208

V. V. Desai, A. Pica, W. Loveland, J. S. Barrett, E. A. McCutchan, S. Zhu, A. D. Ayangeakaa, M. P. Carpenter, J. P. Greene, T. Lauritsen, R. V. F. Janssens, B. M. S. Amro, and W. B. Walters

Phys. Rev. C 101, 034612 – Published 19 March 2020

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