Studying the Onset of Nuclear Collectivity beyond N=40 with Manganese Mass Measurements
ORAL
Abstract
The region of the nuclear chart below 68Ni has been an area of intense experimental and theoretical effort due to the potential onset of a new "island of inversion" when crossing the harmonic oscillator subshell closure at N = 40. We have measured the masses of 64-68Mn using TITAN's multiple-reflection time-of-flight mass spectrometer, resulting in the first precision mass measurements of 67Mn and 68Mn. These results are compared to ab initio calculations and modern shell model calculations and show an increase in collectivity approaching N = 40.
*This work was supported by Canadian agencies NSERC and CFI, the U.S. Department of Energy by Lawrence Livermore National Laboratory, the Canada-UK Foundation, German institution BMBF and by the JLU and GSI under the JLU-GSI strategic Helmholtz partnership agreement.
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Publication: Paper in preparation for Physical Review C
Presenters
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Christopher R Chambers
- TRIUMF