Producing Dubnium with <sup>50</sup>Ti: The first step toward discovering new elements with the BGS

ORAL

Abstract

For many years, element discoveries have become synonymous with a 48Ca beam on an actinide target. However, as we move towards discoveries of elements heavier than 118 we have to find new beam-target combinations and shift to beams of heavier proton numbers. At Berkeley Lab we investigate the use of 50Ti as such an alternative.

As a first step in this development, we produced 50Ti11+ with the VENUS source and used it to make 257Db using the 50Ti+209Bi fusion evaporation reaction in the Berkeley Gas-filled Separator (BGS). During the experiment, we were able to identify 257Db events through EVR-a-a coincidences and EVR-fission coincidences using our newly commissioned detector: the SuperHeavy RECoil detector (SHREC). As a second part in this experiment, we ramped our beam energy by 24 MeV and looked into the 3n, 4n and pxn channels of the 50Ti+209Bi reaction. The results of this experiments and their impact on what we know about the relevant Dubnium and Rutherfordium isotopes will be presented.

*This work was supported in part by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under contract number DE-AC02-05CH11231.

–

Presenters

  • Marilena Lykiardopoulou

    • Lawrence Berkeley National Laboratory

Authors

  • Marilena Lykiardopoulou

    • Lawrence Berkeley National Laboratory

  • Jacklyn M Gates

    • Lawerence Berkeley National Laboratory

  • Rodney Orford

    • Lawrence Berkeley National Laboratory

  • Dirk Rudolph

    • Lund University

  • Corrigan J Appleton

    • Lawrence Berkeley National Laboratory

  • Christopher M Campbell

    • Lawrence Berkeley National Laboratory

  • Roderick M Clark

    • Lawrence Berkeley National Laboratory

  • Heather L Crawford

    • Lawrence Berkeley National Laboratory

  • Paul Fallon

    • Lawrence Berkeley National Laboratory

  • Benoit Gall

    • Universite de Strasbourg, CNRS, IPHC UMR 7178, 67037 Strasbourg, France

  • John Gooding

    • Lawrence Berkeley National Lab

  • Mirza Grebo

    • Lawrence Berkeley National Lab

  • Reiner Kruecken

    • Lawrence Berkeley National Laboratory

  • Erich Leistenschneider

    • Lawrence Berkeley National Lab

  • Mallory McCarthy

    • Lawrence Berkeley National Laboratory

  • Larry William Phair

    • Lawrence Berkeley National Laboratory

  • Jennifer L Pore

    • Lawrence Berkeley National Laboratory

  • Janilee Benitez

    • Lawrence Berkeley National Lab

  • Emma Rice

    • University of California, Berkeley

  • Mark A Stoyer

    • Lawrence Livermore Natl Lab

  • Alexander Theodore Chemey

    • Oregon State University

  • Joanna Szornel

    • Lawrence Berkeley National Laboratory

  • Damon Todd

    • Lawrence Berkeley National Laboratory

  • victor watson

    • Lawrence Berkeley National Laboratory