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A systematic study of even–even nuclei from Ne to Ca in covariant density functional theory with triaxiality

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The ground-state properties of even–even nuclei from Z = 10 to Z = 20 are systematically
studied in covariant density functional theory with the point-coupling interaction PC-PK1. The
triaxiality effect on nuclear binding energy, including the mean-field part and rotational correction
energy, is examined.We find that 38Si, 46S, and 48S exhibit considerable triaxial deformation.
The results indicate that the static effect from the triaxial deformation degree of freedom on the
mean-field part of the nuclear binding energy in the present nuclei is marginal; however, it has
a significant effect on the rotational correction energy. Moreover, we show that the root-meansquare
deviation in binding energies for the 41 nuclei from Ne to Ar is reduced from 2.22 MeV to
1.60MeV and the evolution trend of the N = 20 shell gap is better reproduced after considering
phenomenological collective correction.

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Informasi Detail

Judul Seri

Prog. Theor. Exp. Phys.

No. Panggil

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Penerbit

Oxford : Oxford University Press on behalf of the Physical Society of Japan., 2014

Deskripsi Fisik

Prog. Theor. Exp. Phys. 2014, 113D03 (12 pages)

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

FISIKA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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