42 Papers
490 Citations
R. Ma is an academic researcher from Stony Brook University. The author has contributed to research in topics: Moment of inertia & Nucleon. The author has an hindex of 15, co-authored 41 publications.
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Papers
Nilsson parameter set in the A≊120–140 region
TL;DR: In this article, a new Nilsson parameter set for the proton N=4, 5, and 6 harmonic oscillator shells is deduced for the A\ensuremath{\approxeq}120--140 mass region by fitting a potential energy surface calculation, using the Nilsson-Strutinsky method, to 28 experimental bandhead energies.
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Shape coexistence in 132Ba.
TL;DR: The ground state of this nucleus is predicted to possess maximal triaxiality {gamma} similar to {minus}30{degree} as discussed by the authors, based on quasineutron configurations with large negative deformation close to the collective oblate shape.
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Rotational band structures in 127Cs: Shape changes induced by h11/2 neutron alignment.
TL;DR: In this article, the rotational alignment of a pair of neutrons was observed for each of the ${\mathit{h}}_{11/2}$ neutrons, and the unique-parity of the orbital was identified.
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Band crossings in the gamma -soft nucleus 136Nd.
TL;DR: In this article, a rotational band based on two-and four-quasiparticle configurations was observed to backbend sharply at a frequency h-dash-bar..omega.. = 0.34 MeV due to the alignment of a pair of h/sub 11/2/ protons.
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High-spin states in Ce 136 : Systematics of collective oblate rotation
TL;DR: The level structure of the transitional even-even {sup 136}Ce nucleus has been investigated using the {sup 122}Sn({sup 18}O, 4{ital n}{gamma}) reaction, and tentative evidence is presented for a weak band showing an enhanced dynamic moment of inertia, built on the highly deformed ({nu}{ital i}{sub 13/2}){sup 2} prolate configuration.
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