Spectroscopy of $^{244,245,246}$Pu
ORAL
Abstract
In continuation of high-spin studies in the A$\sim $250 region via inelastic and transfer reactions, new spectroscopic measurements have been performed in the neutron rich $^{244,245,246}$Pu. High-spin states in these N=150,151,152 nuclei were populated using a $^{208}$Pb beam incident on a $^{244}$Pu target, with gamma rays detected by the Gammasphere array. In $^{244}$Pu, two new bands are observed which follow vibrational characteristics. In $^{245}$Pu, new rotational bands are observed through coincidences with the binary reaction partner $^{207}$Pb as well as transitions identified in light-ion transfer reactions. The ground state band in $^{246}$Pu is extended to J$^{\pi }$ = 20$^{+}$. The new results will be discussed in the context of emerging systematics of high-spin spectroscopic data in the Z$<$100 Cm$_{96}$[1] and Cf$_{98}$[2] isotones. 1. U. Shirwadkar, Ph.D. Thesis, U. Massachusetts Lowell, 2009. 2. S. K. Tandel et. al., Phys. Rev. C 82, 041301(R) (2010).
*Supported by USDOE Grants DE-FG02-94ER40848 and DE-AC02-06CH11357.
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