Rotational bands and shape changes in105Rh

Autor: Fernando Rodolfo Espinoza-Quiñones, Roberto Vicençotto Ribas, Marcia de Almeida Rizzutto, M. N. Rao, W. A. Seale, Nilberto H. Medina, L. Emediato, J. R. B. Oliveira, E. W. Cybulska, S. Botelho
Rok vydání: 1997
Předmět:
Zdroj: Physical Review C. 55:2787-2793
ISSN: 1089-490X
0556-2813
DOI: 10.1103/physrevc.55.2787
Popis: The ${}^{105}$Rh nucleus has been studied by in-beam $\ensuremath{\gamma}$ spectroscopy with the heavy-ion fusion-evaporation reaction ${}^{100}$Mo${(}^{11}$B, $\ensuremath{\alpha}$2$n\ensuremath{\gamma})$ at 39 MeV. Gamma-gamma-$t$ coincidences and directional correlation ratios were measured. Four rotational bands have been identified with similar characteristics to those in other $A$\ensuremath{\approx}100 odd-proton nuclei. The positive-parity yrast band based on the $\ensuremath{\pi}{g}_{9/2}$ configuration and the negative-parity $\ensuremath{\pi}{p}_{1/2}$ band, showing large signature splittings, exhibit band crossings at the frequencies of 0.38 MeV and 0.48 MeV, respectively. Experimental Routhians and alignments as well as $B(M1)/B(E2)$ ratios were extracted. The structure of the bands was interpreted within the framework of the cranked shell model and total Routhian surface calculations.
Databáze: OpenAIRE