Change of shape in the yrast sequence in 50Cr
Abstract
In shell model calculations for the yrast even spin states of 50Cr, the static quadrupole moments of the low spin states 2+1 and 4+1 are negative but those of the high spin states 10+1, 12+1 and 14+1 are positive. Even spin states beyond the single j shell limit, Jmax=14, again have negative moments. While the B(E2)'s for the J -> J-2 transitions are strongest along the yrast path for J <= 8, it is found that the transition from the second J=10 state to the first J=8 state (10+2 -> 8+1) is much stronger than the 10+1 -> 8+1 transition. We also note that while the 16+1 -> 14+1 transition is weak, the 16+1 -> 14+2 is quite strong.
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