Experimental evidence for chirality in the odd-A $^{105}$Rh
Language
en
Article de revue
This item was published in
Physics Letters B. 2004, vol. 598, p. 178-187
Elsevier
English Abstract
High-spin states in 105Rh were populated by the 96Zr(13C, p3n) reaction at beam energies of 51 and 58 MeV, and studied using the EUROBALL IV γ-ray spectrometer and the DIAMANT charged particle array. A pair of nearly ...Read more >
High-spin states in 105Rh were populated by the 96Zr(13C, p3n) reaction at beam energies of 51 and 58 MeV, and studied using the EUROBALL IV γ-ray spectrometer and the DIAMANT charged particle array. A pair of nearly degenerate ΔI=1 three-quasiparticle bands with the same spins and parity have been observed. Comparison of the experimental results with tilted axis cranking calculations confirms the chiral character of the two bands, while arguments based on the excitation of particles within the πg9/2ν(h11/2)2 configuration of the yrast band and comparison with the previously observed γ band exclude the other possible interpretations. This is the first experimental evidence for three-quasiparticle chiral structure in the A not, vert, similar 100 region, and the first simultaneous observation of a γ band and chiral partner bands in one nucleus.Read less <
English Keywords
Chiral partner bands
Three-quasiparticle configuration
Tilted axis cranking
Core-quasiparticle coupling calculations
Origin
Hal imported