• Letter

Impact of shell structure on the fusion of neutron-rich mid-mass nuclei

Varinderjit Singh, J. E. Johnstone, R. Giri, S. Hudan, J. Vadas, R. T. deSouza, D. Ackermann, A. Chbihi, Q. Hourdille, A. Abbott, C. Balhoff, A. Hannaman, A. B. McIntosh, M. Sorensen, Z. Tobin, A. Wakhle, S. J. Yennello, M. A. Famiano, K. W. Brown, C. Santamaria, J. Lubian, H. O. Soler, and B. V. Carlson
Phys. Rev. C 104, L041601 – Published 13 October 2021

Abstract

The influence of shell effects on fusion of mid-mass nuclei is explored using isotopic chains of K and Ar ions on an oxygen target. Comparison of the reduced excitation functions reveals that the fusion cross section for the open neutron-shell projectile nuclei K41 and K45 is systematically larger than for the closed neutron-shell projectiles K39 and K47. The São Paulo fusion model using matter densities from systematics fails to describe the measured excitation functions. Use of more realistic densities from a Dirac-Hartree-Bogoliubov (DHB) approach performs significantly better though it still overpredicts the closed-shell nuclei.

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  • Received 18 July 2021
  • Accepted 1 October 2021

DOI:https://doi.org/10.1103/PhysRevC.104.L041601

©2021 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

Varinderjit Singh, J. E. Johnstone, R. Giri, S. Hudan, J. Vadas, and R. T. deSouza*

  • Department of Chemistry and Center for Exploration of Energy and Matter, Indiana University, 2401 Milo B. Sampson Lane, Bloomington, Indiana 47408, USA

D. Ackermann and A. Chbihi

  • GANIL, CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, F-14076 Caen Cedex, France

Q. Hourdille

  • Normandie Université, Unicaen, 14032 Caen, France

A. Abbott, C. Balhoff, A. Hannaman, A. B. McIntosh, M. Sorensen, Z. Tobin, A. Wakhle, and S. J. Yennello

  • Cyclotron Institute Texas A&M University, College Station, Texas 77843, USA

M. A. Famiano

  • Department of Physics Western Michigan University, Kalamazoo, Michigan 49008, USA

K. W. Brown and C. Santamaria

  • National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA

J. Lubian and H. O. Soler

  • Instituto de Física, Universidade Federal Fluminense, Niterói, Rio de Janeiro 24210-340, Brazil

B. V. Carlson

  • Departamento de Fisica, Technologico da Aeronautica, Centro Tecnico Aerospacial, Sao Jose dos Campos, São Paulo 12228-900, Brazil

  • *desouza@indiana.edu

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Issue

Vol. 104, Iss. 4 — October 2021

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