Abrasion-fission reactions at intermediate energies

Bowry, Michael; Tarasov, O. B.; Berryman, J. S.; Bader, V.; Bazin, D.; Chupp, T.; Crawford, H. L.; Gade, A.; Lunderberg, E.; Ratkiewicz, A.; Recchia, F.; Sherrill, B. M.; Smalley, D.; Stolz, A.; Stroberg, S. R.; Weisshaar, D.; Williams, S.; Wimmer, K.; Yurkon, J.

doi:10.1103/physrevc.108.034604

Abrasion-fission reactions at intermediate energies

Journal Article · Fri Sep 01 00:00:00 EDT 2023 · Physical Review. C

DOI:https://doi.org/10.1103/physrevc.108.034604· OSTI ID:1998581

^[1]; ^[2]; ^[2]; Bader, V. ^[2]; ^[2]; ^[3]; Crawford, H. L. ^[4]; ^[2]; Lunderberg, E. ^[2]; Ratkiewicz, A. ^[5]; Recchia, F. ^[6]; Sherrill, B. M. ^[2]; Smalley, D. ^[2]; Stolz, A. ^[2]; Stroberg, S. R. ^[7]; ^[2]; Williams, S. ^[2]; Wimmer, K. ^[8]; ^[2]

Michigan State University, East Lansing, MI (United States); University of the West of Scotland (United Kingdom); Michigan State University
Michigan State University, East Lansing, MI (United States)
University of Michigan, Ann Arbor, MI (United States)
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Rutgers University, New Brunswick, NJ (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Michigan State University, East Lansing, MI (United States); Dipartimento di Fisica e Astronomia dell'Universita and INFN, Padova (Italy)
Michigan State University, East Lansing, MI (United States); University of Notre Dame, IN (United States)
Michigan State University, East Lansing, MI (United States); GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt (Germany)

The availability of high-intensity, heavy-ion beams coupled to sensitive, large solid-angle acceptance spectrometers has enabled a detailed examination of the fission fragments produced in induced-fission reactions. The abrasion fission process involves the formation of projectile-like prefragments in violent nuclear collisions at relative energies in excess of 100 MeV/u. At intermediate energies below this threshold, experiments suggest a change in the prefragment kinematic qualities. Information regarding the influence of this transitional phase upon the evolution of nuclei approaching the point of scission is scarce. In this article, data are presented for over 200 nuclei from nickel to palladium produced in abrasion-fission reactions of a 80 MeV/u ²³⁸U beam. Cross sections were obtained following yield measurements performed for the principal charge states of the identified fission fragments and a detailed analysis of the ion transmission. A full kinematic analysis of the fission fragments has been performed using the LISE⁺⁺ software package, where the trajectory of an ion passing through a spectrometer can be reconstructed based upon measurements at the focal plane. Furthermore, the results obtained at the S800 spectrograph are compared with predictions obtained with a three-fission progenitor (3EER) model. Systematic studies of fission-fragment properties continue to provide a valuable experimental benchmark for theoretical efforts directed toward describing this complex decay channel, that is important in the context of planning experiments to explore the neutron-rich region of the nuclear chart at rare-isotope beam facilities.

View Accepted Manuscript (DOE)

Research Organization:: Michigan State University, East Lansing, MI (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF)

Grant/Contract Number:: SC0020451

OSTI ID:: 1998581

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 3 Vol. 108; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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