Multi-nucleon transfer in the interaction of 977 MeV and 1143 MeV $^{204}$Hg with $^{208}$Pb
Abstrak
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.
Topik & Kata Kunci
Penulis (41)
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
Akses Cepat
- Tahun Terbit
- 2020
- Bahasa
- en
- Sumber Database
- arXiv
- Akses
- Open Access ✓