Rotational states in neutron-deficient Gd139

R. Ma, K. Ahn, Yun Liang, E. S. Paul, N. Xu, D. B. Fossan

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

States have been established in the neutron-deficient Gd139 nucleus for the first time via the Mo92(50Cr,2pn) reaction. Both - and -n coincidence techniques were employed. The yrast band, built on the 1/2h11/2[514](9/2- orbital, shows a signature splitting of 1/4100 keV implying a significant triaxial shape. At a rotational frequency Latin small letter h with stroke1/40.29 MeV a pair of h11/2 quasiprotons align. Associated with this alignment are a decrease in the signature splitting, indicating a near-prolate nuclear shape, and an enhancement of the interband M1 transitions relative to the E2 crossovers, which is consistent with a mixed neutron-proton configuration. In addition, a tentative decoupled band showing the characteristics of a band theoretically expected for the -driving 1/2i13/2 orbital was observed.

Original languageEnglish (US)
Pages (from-to)530-535
Number of pages6
JournalPhysical Review C
Volume39
Issue number2
DOIs
StatePublished - 1989
Externally publishedYes

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rotational states
neutrons
signatures
orbitals
crossovers
alignment
nuclei
protons
augmentation
configurations

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

Cite this

Ma, R., Ahn, K., Liang, Y., Paul, E. S., Xu, N., & Fossan, D. B. (1989). Rotational states in neutron-deficient Gd139. Physical Review C, 39(2), 530-535. https://doi.org/10.1103/PhysRevC.39.530

Rotational states in neutron-deficient Gd139. / Ma, R.; Ahn, K.; Liang, Yun; Paul, E. S.; Xu, N.; Fossan, D. B.

In: Physical Review C, Vol. 39, No. 2, 1989, p. 530-535.

Research output: Contribution to journalArticle

Ma, R, Ahn, K, Liang, Y, Paul, ES, Xu, N & Fossan, DB 1989, 'Rotational states in neutron-deficient Gd139', Physical Review C, vol. 39, no. 2, pp. 530-535. https://doi.org/10.1103/PhysRevC.39.530
Ma, R. ; Ahn, K. ; Liang, Yun ; Paul, E. S. ; Xu, N. ; Fossan, D. B. / Rotational states in neutron-deficient Gd139. In: Physical Review C. 1989 ; Vol. 39, No. 2. pp. 530-535.
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