Prolate-Spherical Shape Coexistence atN=28inS44

Prolate-spherical shape coexistence at N=28 in 44S.

The structure of 44S has been studied by using delayed γ and electron spectroscopy. The decay rates of the 02+ isomeric state to the 2(1)+ and 0(1)+ states, measured for the first time, lead to a reduced transition probability B(E2: 2(1)+→0(2)+)=8.4(26) e(2) fm4 and a monopole strength ρ2(E0: 0(2)+→0(1)+)=8.7(7)×10(-3). Comparisons to shell model calculations point towards prolate-spherical sha...

Prolate - oblate shape coexistence at high spin in 175 Hf

The recent experimental observation of collective rotational bands up to I > 60h̄ in 175Hf presents theoretical challenges. It is shown here that total Routhian surface calculations are able to explain the yrast high-spin behavior, with collective oblate states favored at I ∼ 35h̄ and strongly deformed prolate states at the highest spins. The collective oblate rotation terminates in noncollective...

Shape factor extremes for prolate spheroids

Spherical-deformed shape coexistence for the pf shell in the nuclear shell model

Takahiro Mizusaki, Takaharu Otsuka, Michio Honma, and B. Alex Brown Department of Law, Senshu University, Higashimita, Tama, Kawasaki, Kanagawa 214-8580, Japan Department of Physics, University of Tokyo, Hongo, Tokyo 113-0033, Japan RIKEN, Hirosawa, Wako-shi, Saitama 351-0198, Japan Center for Mathematical Sciences, University of Aizu, Tsuruga, Ikki-machi Aizu-Wakamatsu, Fukushima 965-8580, Jap...

Ion beam-induced shaping of Ni nanoparticles embedded in a silica matrix: from spherical to prolate shape

Present work reports the elongation of spherical Ni nanoparticles (NPs) parallel to each other, due to bombardment with 120 MeV Au+9 ions at a fluence of 5 × 1013 ions/cm2. The Ni NPs embedded in silica matrix have been prepared by atom beam sputtering technique and subsequent annealing. The elongation of Ni NPs due to interaction with Au+9 ions as investigated by cross-sectional transmission e...