Lowest excitations in 56Ti and the predicted N=34 shell closure.

نویسندگان

  • S N Liddick
  • P F Mantica
  • R V F Janssens
  • R Broda
  • B A Brown
  • M P Carpenter
  • B Fornal
  • M Honma
  • T Mizusaki
  • A C Morton
  • W F Mueller
  • T Otsuka
  • J Pavan
  • A Stolz
  • S L Tabor
  • B E Tomlin
  • M Wiedeking
چکیده

Recent experimental characterization of the subshell closure at N=32 in the Ca, Ti, and Cr isotones has stimulated shell-model calculations that indicated the possibility that the N=34 isotones of these same elements could exhibit characteristics of a shell closure, namely, a high energy for the first excited 2(+) level. To that end, we have studied the decay of 56Sc produced in fragmentation reactions and identified new gamma rays in the daughter N=34 isotone 56Ti. The first 2(+) level is found at an energy of 1127 keV, well below the expected position that would indicate the presence of an N=34 shell closure in 56Ti.

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عنوان ژورنال:
  • Physical review letters

دوره 92 7  شماره 

صفحات  -

تاریخ انتشار 2004