Reduced quasifission competition in fusion reactions forming neutron-rich heavy elements

Hammerton, K.; Kohley, Z.; Hinde, D. J.; Dasgupta, M.; Wakhle, A.; Williams, E.; Oberacker, V. E.; Umar, A. S.; Carter, I. P.; Cook, K. J.; Greene, J.; Jeung, D. Y.; Luong, D. H.; McNeil, S. D.; Palshetkar, C. S.; Rafferty, D. C.; Simenel, C.; Stiefel, K.

doi:10.1103/physrevc.91.041602

Title: Reduced quasifission competition in fusion reactions forming neutron-rich heavy elements

Journal Article · Tue Apr 21 00:00:00 EDT 2015 · Physical Review. C. Nuclear Physics

DOI:https://doi.org/10.1103/physrevc.91.041602· OSTI ID:1238246

Hammerton, K. ^[1]; Kohley, Z. ^[1]; Hinde, D. J. ^[2]; Dasgupta, M. ^[2]; Wakhle, A. ^[3]; Williams, E. ^[2]; Oberacker, V. E. ^[4]; Umar, A. S. ^[4]; Carter, I. P. ^[2]; Cook, K. J. ^[2]; Greene, J. ^[5]; Jeung, D. Y. ^[2]; Luong, D. H. ^[2]; McNeil, S. D. ^[2]; Palshetkar, C. S. ^[2]; Rafferty, D. C. ^[2]; Simenel, C. ^[2]; Stiefel, K. ^[1]

Michigan State University, East Lansing, MI (United States). National Superconducting Cyclotron Laboratory
Australian National University, Canberra (Australia)
Michigan State University, East Lansing, MI (United States). National Superconducting Cyclotron Laboratory; Australian National University, Canberra (Australia)
Vanderbilt University, Nashville, TN (United States)
Argonne National Laboratory (ANL), Argonne, IL (United States)

Measurements of mass-angle distributions (MADs) for Cr + W reactions, providing a wide range in the neutron-to-proton ratio of the compound system, (N/Z)_CN, have allowed for the dependence of quasifission on the (N/Z)_CN to be determined in a model-independent way. Previous experimental and theoretical studies had produced conflicting conclusions. The experimental MADs reveal an increase in contact time and mass evolution of the quasifission fragments with increasing (N/Z)_CN, which is indicative of an increase in the fusion probability. The experimental results are in agreement with microscopic time-dependent Hartree-Fock calculations of the quasifission process. Here the experimental and theoretical results favor the use of the most neutron-rich projectiles and targets for the production of heavy and superheavy nuclei.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF); Australian Research Council

Grant/Contract Number:: AC02-06CH11357; FG02-96ER40975; NA0000979; PHY-1102511; IIA-1341088; DP110102858; DP140101337; FL110100098; DP130101569; FT120100760; DE140100784

OSTI ID:: 1238246

Alternate ID(s):: OSTI ID: 1180306

Journal Information:: Physical Review. C. Nuclear Physics, Vol. 91, Issue 4; ISSN 0556-2813

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 49 works

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