FIRST OBSERVATION OF NEW NEUTRONRICH MAGNESIUM, ALUMINUM, AND SILICON ISOTOPES Conference Paper uri icon

abstract

  • The investigation of the limits of nuclear existence is fundamental to the understanding of nuclear forces and structure. The limits of binding for very neutron-rich nuclei and the location of the neutron dripline are established experimentally only for the lightest elements. We report on the discovery of the new neutron-rich isotopes 40Mg, 42,43Al, and 44Si. These rare isotopes were produced at the National Superconducting Cyclotron Laboratory by fragmentation of a 141 MeV/u 48Ca beam on a tungsten target. The combination of the A1900 fragment separator together with the analysis beam line of the S800 spectrograph provided a two-stage fragment separation with exceptional selectivity. The observation of the odd-odd nucleus 42Al, which was predicted to be unbound by FRDM [1] and HFB-8 [2] models, is the first indication that the neutron drip line may be located significantly further towards heavier isotopes in this mass region than it is currently believed. 2010 American Institute of Physics.

name of conference

  • PROCEEDINGS OF THE 2009 JOINT ANNUAL CONFERENCE OF THE NATIONAL SOCIETY OF BLACK PHYSICISTS AND THE NATIONAL SOCIETY OF HISPANIC PHYSICISTS

published proceedings

  • AIP Conference Proceedings

author list (cited authors)

  • Stolz, A., Amthor, A. M., Baumann, T., Bazin, D., Brown, B. A., Folden Iii, C. M., ... Oluseyi, H. M.

citation count

  • 0

complete list of authors

  • Stolz, A||Amthor, AM||Baumann, T||Bazin, D||Brown, BA||Folden Iii, CM||Gade, A||Ginter, TN||Hausmann, M||Matos, M||Morrissey, DJ||Portillo, M||Schiller, A||Sherrill, BM||Tarasov, OB||Thoennessen, M||Oluseyi, Hakeem M

publication date

  • October 2010