Deformed nature of the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mn>6</mn></mrow><mrow><mi mathvariant="normal">−</mi></mrow></msup></mrow></math> states in <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Al</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>26</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math> observed by the (α,t) reaction

M. Yasue; H. Sato; T. Hasegawa; J. Takamatsu; T. Terakawa; T. Nakagawa; K. Hatori; R. J. Peterson

doi:10.1103/PhysRevC.39.2159

Deformed nature of the $6^{-}$ states in ${}^{26}{Al}$ observed by the (α,t) reaction

M. Yasue, H. Sato, T. Hasegawa, J. Takamatsu, T. Terakawa, T. Nakagawa, K. Hatori, and R. J. Peterson

Phys. Rev. C 39, 2159 – Published 1 June 1989

Abstract

The ${}^{25}{Mg}$ (α,t $)^{26}$ Al reaction has been studied at $E_{α}$ =50 MeV in the region of excitation energy from 5 to 10 MeV with an energy resolution of 20 keV. The fragmentation of the strengths for the stretched $6^{-}$ states is found to be consistent with the calculation for an oblately deformed nucleus, in contrast to the prolate shape of the ground-state band.