The nucleus 49Cr has been studied using the reactions 28Si(28Si,α2pn) at 115 MeV and 46Ti(α,n) at 12 MeV, respectively. A high-K band with Kπ=13/2+ has been identified, whose bandhead acts as an yrast trap for the low-lying levels with positive parity. This peculiar phenomenon is well reproduced by large-scale shell model calculations in the pf configuration space plus a proton hole in the 1d3/2 orbital. As an essential part of the work, lifetimes of some nonyrast states, as well as of a state in the Kπ=5+ band in 50Mn, have been determined using the Doppler shift attenuation method.
High-K Band of Unnatural Parity in 49Cr
BRANDOLINI, FRANCO;LENZI, SILVIA MONICA;
1999
Abstract
The nucleus 49Cr has been studied using the reactions 28Si(28Si,α2pn) at 115 MeV and 46Ti(α,n) at 12 MeV, respectively. A high-K band with Kπ=13/2+ has been identified, whose bandhead acts as an yrast trap for the low-lying levels with positive parity. This peculiar phenomenon is well reproduced by large-scale shell model calculations in the pf configuration space plus a proton hole in the 1d3/2 orbital. As an essential part of the work, lifetimes of some nonyrast states, as well as of a state in the Kπ=5+ band in 50Mn, have been determined using the Doppler shift attenuation method.File in questo prodotto:
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