Collective Structure in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi>Zr</mml:mi><mml:mprescripts/><mml:none/><mml:mn>94</mml:mn></mml:mmultiscripts></mml:math>and Subshell Effects in Shape Coexistence
Amit Chakraborty(University of Kentucky), E. E. Peters(University of Kentucky), B. P. Crider(University of Kentucky), C. Andreoiu(Simon Fraser University), P. C. Bender(TRIUMF), D. S. Cross(Simon Fraser University), G. A. Demand(University of Guelph), A. B. Garnsworthy(University of British Columbia), P. E. Garrett(University of Guelph), G. Hackman(TRIUMF), B. Hadinia(University of Guelph), S. Ketelhut(TRIUMF), Ajay Kumar(University of Kentucky), K. G. Leach(University of Guelph), M. T. McEllistrem(University of Kentucky), J. L. Pore(Simon Fraser University), F. M. Prados-Estévez(University of Kentucky), E. T. Rand(University of Guelph), B. Singh(McMaster University), E. R. Tardiff(University of British Columbia), Z.-M. Wang(TRIUMF), J.L. Wood(Georgia Institute of Technology), S. W. Yates(University of Kentucky)
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Abstract
Based on results from a measurement of weak decay branches observed following the ${\ensuremath{\beta}}^{\ensuremath{-}}$ decay of $^{94}\mathrm{Y}$ and on lifetime data from a study of $^{94}\mathrm{Zr}$ by inelastic neutron scattering, collective structure is deduced in the closed-subshell nucleus $^{94}\mathrm{Zr}$. These results establish shape coexistence in $^{94}\mathrm{Zr}$. The role of subshells for nuclear collectivity is suggested to be important.
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