Rotational bands in the doubly odd nucleus 134Pr

Petrache, C. M.; Bazzacco, D.; Lunardi, S.; Alvarez, C. Rossi; Angelis, G. de; Poli, M.; Bucurescu, D.; Ur, C. A.; Semmes, P.B.; Wyss, R.

doi:10.1016/0375-9474(95)00416-5

Cited by 114 publications

(69 citation statements)

References 27 publications

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“…In the nuclei 136−140 Nd, surrounding the subject of the present paper, the rotational bands at medium and high spins have been successfully interpreted with model calculations based on triaxial shapes [9][10][11][12][13]. In the same mass region nearly degenerate bands with the same spin and parity have been observed, which were interpreted as chiral partners (for example 134 Pr and 135 Nd [4,7,8]). …”

Section: Introductionmentioning

confidence: 66%

“…The transition multipolarities have been extracted from the DCO ratios using the procedure described in Ref. [7].…”

Section: High-spin States Inmentioning

confidence: 99%

“…More recently two unique fingerprints of triaxiality in nuclei have been intensively studied: the wobbling motion [3] and the dynamic chirality [4,5]. These exotic types of motion were observed in specific regions of the nuclear chart: the wobbling motion in the odd-even Lu nuclei with A ∼ 160 [6], the chirality primarly in the odd-odd and odd-even nuclei with A ∼ 130 nuclei [4,7,8]. In the nuclei 136−140 Nd, surrounding the subject of the present paper, the rotational bands at medium and high spins have been successfully interpreted with model calculations based on triaxial shapes [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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Tilted axis rotation, candidates for chiral bands, and wobbling motion in138Nd

et al. 2012

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High-spin states in138 Nd were investigated using the reaction 94 Zr( 48 Ca,4n), detecting coincident γ-rays with the gasp spectrometer. A rich level scheme was constructed including 4 bands of negative parity at low spins, 8 bands of dipole transitions and 8 bands of quadrupole transitions at medium spins. The Cranked Shell Model and the Tilted Axis Cranking model are used to assign configurations to the observed bands, where zero pairing is assumed. For selected configurations the case of finite pairing is also considered. A consistent notation for configuration assignment is introduced, which applies both for zero and finite pairing. The observed bands are interpreted as rotation around the short and long principal axes (quadrupole bands), as well as around a tilted axis (dipole bands). The dipole bands have an intermediate character, between magnetic and collective electric rotation. A pair of dipole bands are candidates for chiral partners, the first case this property has been identified in an even-even nucleus. The possible existence of the wobbling mode at low deformation and medium spins is discussed. The consistent interpretation of the multitude of observed bands strongly supports the existence of stable triaxial deformation at medium spins in 138 Nd.

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Section: Introductionmentioning

confidence: 66%

“…The transition multipolarities have been extracted from the DCO ratios using the procedure described in Ref. [7].…”

Section: High-spin States Inmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tilted axis rotation, candidates for chiral bands, and wobbling motion in138Nd

et al. 2012

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“…The clover rings of Euroball form a highly efficient Compton polarimeter. On the basis of directional correlation of γ radiation from oriented states [44] and linear polarization analysis, an M1 character with negligible E2 component was assigned to the ΔI = 1 intraband transitions. The ΔI = 2 intraband transitions show an E2 character.…”

Section: Prmentioning

confidence: 99%

Lifetime measurements in mass regions A=100 and A=130 as a test for chirality in nuclear systems

Tonev

Yavahchova

Angelis

et al. 2016

EPJ Web of Conferences

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Abstract. Two odd-odd nuclei from the A ∼ 100 and A ∼ 130 regions, namely 102 Rh and 134 Pr have been studied in search for chiral doublet bands via 94 Zr( 11 B,3n) 102 Rh and 119 Sn( 19 F,4n) 134 Pr reactions, respectively. Two nearly degenerate bands built on the πg 9/2 ⊗ νh 11/2 configuration have been identified in 102 Rh and on the πg 11/2 ⊗ νh 11/2 configuration for 134 Pr. Lifetimes of excited nuclear states were measured using Dopplershift attenuation method and recoil distance Doppler-shift method. The deexciting gamma rays were registered by the Indian National Gamma Array for 102 Rh and using the EUROBALL IV detector array with an inner Bismuth Germanate (BGO) ball for 134 Pr, respectively. Polarization and angular correlation measurements have been performed to establish the spin and parity assignments for these bands. The derived reduced transition probabilities are compared to the predicitons of the two quasiparticles + triaxial rotor and interacting boson fermion-fermion models.

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“…In the A ∼ 130 mass region, the nearly degenerate ΔI = 1 doublet bands built on the πh 11/2 ⊗ νh 11/2 configuration have attracted significant attention and intensive discussion in odd-odd N = 77 ( 132 Cs, 134 La) [1,2], N = 75 ( 130 Cs, 132 La, 134 Pr, 136 Pm, 138 Eu) [3][4][5][6], N = 73 ( 128 Cs, 130 La, 132 Pr) [7,8], N = 71 ( 126 Cs, 128 La) [9,10], N = 69 ( 124 Cs, 126 La, 128 Pr) [11][12][13] and N = 67 ( 122 Cs, 124 La) [14,15] isotones. These ΔI = 1 doublet bands with the same positive parity are mostly interpreted as a manifestation of "chirality" in the sense of the angular momentum coupling [16].…”

Section: Introductionmentioning

confidence: 99%

Structure of a positive-parity band in 130Pr

et al. 2017

Eur. Phys. J. A

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Rotational bands in the doubly odd nucleus 134Pr

Cited by 114 publications

References 27 publications

Tilted axis rotation, candidates for chiral bands, and wobbling motion in138Nd

Tilted axis rotation, candidates for chiral bands, and wobbling motion in138Nd

Lifetime measurements in mass regions A=100 and A=130 as a test for chirality in nuclear systems

Structure of a positive-parity band in 130Pr

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