Signature splitting in two quasiparticle rotational bands of 180,182Ta

The signature inversion observed in rotational bands belonging to high-j configurations of odd–odd deformed nuclei has been analyzed within the framework of an axially symmetric rotor plus two-particle model. The Coriolis and n–p interaction are considered the main cause of energy staggering. However, γ-triaxial deformation and the numbers of valence protons, Np, and neutrons, Nn also contribute to the energy staggering between odd- and even-spin states.

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OBSERVATION OF FOUR-QUASIPARTICLE BAND AND SIGNATURE SPLITTING FEATURES IN 160Tm

International Journal of Modern Physics E ◽

10.1142/s0218301308011720 ◽

2008 ◽

Vol 17 (supp01) ◽

pp. 21-28 ◽

Cited By ~ 2

Author(s):

J. B. LU ◽

D. YANG ◽

L. SUN ◽

L. L. WANG ◽

H. D. WANG ◽

...

Keyword(s):

High Spin ◽

Gamma Ray ◽

Spin States ◽

Signature Splitting ◽

Rotational Bands ◽

High Spin States ◽

Gamma Ray Spectroscopy ◽

Quasiparticle Band

High-spin states of 160 Tm are studied via in-beam gamma-ray spectroscopy. Previously known rotational bands are confirmed. These bands feed into low-lying states which are enriched in this work. A four-quasiparticle band with configuration of πg7/2 ⊗ νh9/2 ⊗ ν(i13/2)2 is established. Signature splitting features of πh11/2⊗νi13/2 and πh11/2⊗νh9/2 bands are presented.

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Relation between signature splitting in rotational bands of odd nuclei and the amplitude of the Ω=1/2 component

Physics of Atomic Nuclei ◽

10.1134/1.855620 ◽

2000 ◽

Vol 63 (2) ◽

pp. 191-194 ◽

Cited By ~ 1

Author(s):

R. V. Jolos

Keyword(s):

Signature Splitting ◽

Rotational Bands

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Calculation of the rotational bands for the 20Ne isotope

Iranian Journal of Physics Research ◽

10.29252/ijpr.19.2.359 ◽

2019 ◽

Vol 19 (2) ◽

pp. 359-364

Author(s):

N Roshanbakht ◽

M R Shojaei ◽

◽

Keyword(s):

Rotational Bands

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Branching Ratios and Lifetimes of 25Mg Levels below 5.2 MeV

Canadian Journal of Physics ◽

10.1139/p74-304 ◽

1974 ◽

Vol 52 (23) ◽

pp. 2329-2342 ◽

Cited By ~ 14

Author(s):

R. W. Ollerhead ◽

D. C. Kean ◽

R. M. Gorman ◽

M. B. Thomson

Keyword(s):

Doppler Shift ◽

Gamma Ray ◽

Branching Ratios ◽

Surface Barrier ◽

Surface Barrier Detector ◽

Rotational Model ◽

Rotational Bands ◽

Barrier Detector ◽

Combined Data

All levels below 5.2 MeV in 25Mg have been studied using the reaction 25Mg(p, p′γ). In-elastically scattered protons were detected in an annular surface barrier detector located at 180°; coincidence gamma-ray spectra were obtained at Ge (Li) detector angles of 90°, 45°, and 135°. Level energies were determined from unshifted gamma-ray energies recorded in the 90° spectra. Lifetimes were obtained from the attenuated Doppler shift of gamma-ray energies recorded in spectra taken at forward and backward angles. Branching ratios were deduced from the combined data of all three angles. The identification of levels as members of rotational bands is discussed, and transition strengths deduced from the present measurements are compared with predictions of the simple rotational model.

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